1. Species Botryllus arenaceus Monniot C., 1988
2. Species Botryllus aster Monniot C., 1991
3. Species Botryllus bonanzus Palomino-Alvarez, Nydam, Rocha & Simões, 2022
4. Species Botryllus camur Palomino-Alvarez, Nydam, Rocha & Simões, 2022
5. Species Botryllus closionis Monniot C., Monniot F., Griffiths & Schleyer, 2001
6. Species Botryllus compositus Tokioka, 1967
7. Species Botryllus delicatus Okuyama & Saito, 2001
8. Species Botryllus eilatensis Shenkar & Monniot F., 2006
9. Species Botryllus elegans (Quoy & Gaimard, 1834)
10. Species Botryllus firmus Monniot F. & Monniot C., 1996
11. Species Botryllus flavus Sanamyan & Sanamyan, 2017
12. Species Botryllus gaiae Brunetti, 2020
13. Species Botryllus gregalis (Sluiter, 1898)
14. Species Botryllus hartensis Palomino-Alvarez, Nydam, Rocha & Simões, 2022
15. Species Botryllus horridus Saito & Okuyama, 2003
16. Species Botryllus humilis Monniot C., 1988
17. Species Botryllus japonicus (Oka, 1931)
18. Species Botryllus lambertorum Palomino-Alvarez, Nydam, Rocha & Simões, 2022
19. Species Botryllus maeandrius (Sluiter, 1898)
20. Species Botryllus magnus Ritter, 1901
21. Species Botryllus mortenseni Millar, 1964
22. Species Botryllus nortensis Palomino-Alvarez, Nydam, Rocha & Simões, 2022
23. Species Botryllus ovalis Monniot C., 1988
24. Species Botryllus perspicuum Herdman, 1886
25. Species Botryllus planus (Van Name, 1902)
26. Species Botryllus primigenus Oka, 1928
27. Species Botryllus promiscuus Okuyama & Saito, 2002
28. Species Botryllus pumilus Monniot F., 2016
29. Species Botryllus puniceus Saito & Nagasawa, 2003
30. Species Botryllus renierii (Lamarck, 1815)
31. Species Botryllus rosaceus Savigny, 1816
32. Species Botryllus scalaris Saito & Mukai, 1981
33. Species Botryllus schlosseri (Pallas, 1766)
34. Species Botryllus separatus Sluiter, 1904
35. Species Botryllus sexiens Saito & Watanabe, 1981
36. Species Botryllus stewartensis Brewin, 1958
37. Species Botryllus stuhlmanni Michaelsen, 1918
38. Species Botryllus tabori Rodrigues, 1962
39. Species Botryllus tuberatus Ritter & Forsyth, 1917
40. Species Botryllus tunnelli Palomino-Alvarez, Nydam, Rocha & Simões, 2022
41. Species Botryllus unamensis Palomino-Alvarez, Nydam, Rocha & Simões, 2022
42. Species Botryllus anceps (Herdman, 1891) accepted as Botrylloides anceps (Herdman, 1891) (new combination)
43. Species Botryllus anomalus Millar, 1962 accepted as Botryllus elegans (Quoy & Gaimard, 1834) (original combination)
44. Species Botryllus aurantius (Oka, 1927) accepted as Botrylloides violaceus Oka, 1927 (synonym)
45. Species Botryllus aureus (Sars, 1851) accepted as Botrylloides aureum Sars, 1851 accepted as Botrylloides aureus Sars, 1851 (synonym)
46. Species Botryllus aurolineatus Giard, 1872 accepted as Botryllus schlosseri (Pallas, 1766) (original combination)
47. Species Botryllus badium Alder & Hancock, 1912 accepted as Botryllus schlosseri (Pallas, 1766) (literature misspelling)
48. Species Botryllus badius Alder & Hancock, 1912 accepted as Botryllus schlosseri (Pallas, 1766) (original combination)
49. Species Botryllus bivittatus Milne Edwards, 1841 accepted as Botryllus schlosseri (Pallas, 1766) (original combination)
50. Species Botryllus calendula Giard, 1872 accepted as Botryllus schlosseri (Pallas, 1766) (original combination)
51. Species Botryllus calyculatus Alder & Hancock, 1907 accepted as Botryllus schlosseri (Pallas, 1766) (original combination)
52. Species Botryllus castaneus Alder & Hancock, 1848 accepted as Botryllus schlosseri (Pallas, 1766) (original combination)
53. Species Botryllus chevalense (Herdman, 1906) accepted as Botrylloides chevalense Herdman, 1906 accepted as Botrylloides chevalensis Herdman, 1906 (synonym)
54. Species Botryllus communis Oka, 1927 accepted as Botryllus tuberatus Ritter & Forsyth, 1917 (original combination)
55. Species Botryllus diegense (Ritter & Forsyth, 1917) accepted as Botrylloides diegensis Ritter & Forsyth, 1917 (synonym)
56. Species Botryllus eligulatum (Beniaminson, 1975) accepted as Botryllus tuberatus Ritter & Forsyth, 1917 (new combination)
57. Species Botryllus gascoi Della Valle, 1877 accepted as Botryllus schlosseri (Pallas, 1766)
58. Species Botryllus gemmeus Savigny, 1816 accepted as Botryllus schlosseri (Pallas, 1766) (original combination)
59. Species Botryllus giganteum Aron & Sole Cava, 1991 accepted as Botrylloides giganteum (Pérès, 1949) accepted as Botrylloides giganteus (Pérès, 1949) (considered Botryllus in a time that the two genera were considered synonyms)
60. Species Botryllus gouldii Verrill, 1871 accepted as Botryllus schlosseri (Pallas, 1766) (original combination)
61. Species Botryllus gracilis Michaelsen, 1927 accepted as Botrylloides anceps (Herdman, 1891) (synonym)
62. Species Botryllus leachi Savigny, 1816 accepted as Botrylloides leachii (Savigny, 1816) (literature misspelling)
63. Species Botryllus leachii (Savigny, 1816) accepted as Botrylloides leachii (Savigny, 1816) (new combination)
64. Species Botryllus lenis (Saito & Watanabe, 1985) accepted as Botrylloides lenis Saito & Watanabe, 1985 (synonym)
65. Species Botryllus leptus (Herdman, 1899) accepted as Botrylloides leachii (Savigny, 1816) (new combination)
66. Species Botryllus magnicoecum (Hartmeyer, 1912) accepted as Botrylloides magnicoecum (Hartmeyer, 1912) accepted as Botrylloides magnicoecus (Hartmeyer, 1912) (new combination)
67. Species Botryllus magnicoecus (Hartmeyer, 1912) accepted as Botrylloides magnicoecum (Hartmeyer, 1912) accepted as Botrylloides magnicoecus (Hartmeyer, 1912) (unjustified emendation)
68. Species Botryllus marionis Giard, 1872 accepted as Botryllus schlosseri (Pallas, 1766) (original combination)
69. Species Botryllus miniatus Alder & Hancock, 1912 accepted as Botryllus schlosseri (Pallas, 1766) (original combination)
70. Species Botryllus minutus Savigny, 1816 accepted as Botryllus schlosseri (Pallas, 1766) (original combination)
71. Species Botryllus morio Giard, 1872 accepted as Botryllus schlosseri (Pallas, 1766) (original combination)
72. Species Botryllus mortensi Millar, 1964 accepted as Botryllus mortenseni Millar, 1964 (Misspelling)
73. Species Botryllus namei Hartmeyer & Michaelsen, 1928 accepted as Botryllus planus (Van Name, 1902) (original combination)
74. Species Botryllus niger (Herdman, 1886) accepted as Botrylloides nigrum Herdman, 1886 accepted as Botrylloides niger Herdman, 1886 (misspelling)
75. Species Botryllus nigrum (Herdman, 1886) accepted as Botrylloides nigrum Herdman, 1886 accepted as Botrylloides niger Herdman, 1886 (new combination)
76. Species Botryllus okai Monniot C., 1988 accepted as Botryllus magnicoecus (Hartmeyer, 1912) accepted as Botrylloides magnicoecum (Hartmeyer, 1912) accepted as Botrylloides magnicoecus (Hartmeyer, 1912) (replacement name)
77. Species Botryllus perspicuus (Herdman, 1886) accepted as Botrylloides perspicuus (Herdman, 1886) (new combination)
78. Species Botryllus polycyclus Savigny, 1816 accepted as Botryllus schlosseri (Pallas, 1766) (original combination)
79. Species Botryllus pruinosus Giard, 1872 accepted as Botryllus schlosseri (Pallas, 1766) (original combination)
80. Species Botryllus pupureus (Oka, 1932) accepted as Botryllus purpureus (Oka, 1932) accepted as Botrylloides anceps (Herdman, 1891) (misspelling)
81. Species Botryllus purpureus (Oka, 1932) accepted as Botrylloides anceps (Herdman, 1891) (new combination)
82. Species Botryllus rubens Alder & Hancock, 1848 accepted as Botryllus schlosseri (Pallas, 1766) (original combination)
83. Species Botryllus rubigo Giard, 1872 accepted as Botryllus schlosseri (Pallas, 1766) (original combination)
84. Species Botryllus rufus (Oka, 1927) accepted as Botrylloides anceps (Herdman, 1891) (new combination)
85. Species Botryllus saccus (Kott, 2003) accepted as Botrylloides saccus Kott, 2003 (synonym)
86. Species Botryllus simodensis (Saito & Watanabe, 1981) accepted as Botrylloides simodensis Saito & Watanabe, 1981 (synonym)
87. Species Botryllus smaragdus Milne Edwards, 1841 accepted as Botryllus schlosseri (Pallas, 1766) (original combination)
88. Species Botryllus stellatus Gaertner, 1774 accepted as Botryllus schlosseri (Pallas, 1766) (original combination)
89. Species Botryllus tyreus (Herdman, 1886) accepted as Botrylloides tyreum Herdman, 1886 accepted as Botrylloides tyreus Herdman, 1886 (new combination)
90. Species Botryllus violaceus Milne Edwards, 1841 accepted as Botryllus schlosseri (Pallas, 1766) (synonym)
91. Species Botryllus violatinctus Hartmeyer, 1909 accepted as Botryllus schlosseri (Pallas, 1766) (original combination)
92. Species Botryllus virescens Alder & Hancock, 1848 accepted as Botryllus schlosseri (Pallas, 1766) (original combination)
93. Species Botryllus racemosus Quoy & Gaimard, 1834 (uncertain > nomen dubium)

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