Amaea occidentalis Hartman, 1944 accepted as Amaeana occidentalis (Hartman, 1944) (original description)
Aricia johnsoni Moore, 1909 accepted as Orbinia johnsoni (Moore, 1909) (source of synonymy)
Chone minuta Hartman, 1944 (original description)
Cirriformia spirabranchia (Moore, 1904) (basis of record)
Clymenella rubrocincta Johnson, 1901 accepted as Axiothella rubrocincta (Johnson, 1901) (source of synonymy)
Euzonus (Thoracophelia) mucronata (Treadwell, 1914) accepted as Thoracophelia mucronata (Treadwell, 1914) (basis of record)
Glycera tenuis Hartman, 1944 (original description)
Haploscoloplos elongata (Johnston, 1901) accepted as Leitoscoloplos pugettensis (Pettibone, 1957) (basis of record)
Harmothoe lunulata (Delle Chiaje, 1830) accepted as Malmgrenia lunulata (Delle Chiaje, 1830) (additional source)
Harmothoe lunulata pacifica Monro, 1928 accepted as Malmgreniella pacifica (Monro, 1928) (additional source)
Magelona pitelkai Hartman, 1944 (original description)
Mediomastus Hartman, 1944 (original description)
Mediomastus californiensis Hartman, 1944 (original description)
Ophelina mucronata Treadwell, 1914 accepted as Thoracophelia mucronata (Treadwell, 1914) (source of synonymy)
Orbinia johnsoni (Moore, 1909) (basis of record)
Pseudopotamilla socialis Hartman, 1944 (original description)
Ramex Hartman, 1944 (original description)
Ramex californiensis Hartman, 1944 (original description)
Sabella media (Bush, 1905) accepted as Parasabella media Bush, 1905 (source of synonymy)
Sabella pacifica Fewkes, 1889 accepted as Dodecaceria pacifica (Fewkes, 1889) (status source)
Scoloplos elongata Johnson, 1901 accepted as Leitoscoloplos pugettensis (Pettibone, 1957) (new combination reference)
Spinosphaera oculata Hartman, 1944 (original description)
Streblospio benedicti Webster, 1879 (additional source)
Streblospio lutincola Hartman, 1936 accepted as Streblospio benedicti Webster, 1879 (source of synonymy)
Syllis pulchra Berkeley & Berkeley, 1938 accepted as Syllis pigmentata (Chamberlin, 1919) (new combination reference)
Typosyllis pulchra (Berkeley & Berkeley, 1938) (basis of record)

Holotype LACM AHF Poly 0218, geounit Tomales Point, identified as Spinosphaera oculata Hartman, 1944

 Depth range

 for Spinosphaera oculata Hartman, 1944

Intertidal. [details]

 Diagnosis

 for Mediomastus Hartman, 1944

Original diagnosis by Hartman (1944: 264): "The thorax consists of 11 segments, including a well-developed, ... [details]

 Distribution

 for Spinosphaera oculata Hartman, 1944

Pacific Ocean: from central California (USA) to Baja California Sur (Mexico). [details]

 Etymology

 for Spinosphaera oculata Hartman, 1944

Not stated. The specific epithet oculata (masculine: oculatus) is a Latin adjective meaning 'having eyes', and ... [details]

 Habitat

 for Spinosphaera oculata Hartman, 1944

Intertidal rocky habitats. [details]

 Spelling

 for Sabella pacifici Grube, 1859

Grube used the spelling 'pacifici', presumably as a genitive. He did not use 'pacifica' and thus his name ... [details]

 Taxonomy

 for Scoloplos elongata Johnson, 1901

Moved to genus Haploscoloplos by Hartman (1944). Pettibone (1957) stated that Scoloplos elongata was a primary ... [details]

 Type locality

 for Ramex californiensis Hartman, 1944

Tomales Point, Marin County, California, USA [details]

 Type locality

 for Spinosphaera oculata Hartman, 1944

Tomales Point, ocean side, central California, USA, Pacific Ocean (gazetteer estimate 38.24°, -122.9955°), ... [details]