Dates of publication as annotated on the copy in Museum of Comparative Zoölogy (available online on BHL): pp. 1-32, pl. 4-6, 8, 10, 16 [1870]; pp. 33-176, pl. 7-9, 11-15, 17-33 [1871]; pp. 193-256, pl. 34-38, 40-52 [1872], pp. 257-291, pl. 39 [1873]; see also the collations by R.E. Petit.