Iredalk. — Sitter's e< Manual of the New Zealand Mollusca." 485 



wrote. '" Musculus L. fl. Anodonta cygnea L.) = Anodontites Brag., 1792 

 + Anodonta Lam., 171)*' + Modiolus Lam., 1799 + Modiolaria Beck, 1840." 

 The reference to Anodontites Bruguiere. 1792, was probably through the 

 mistaken idea that that genus-name was proposed for a species of Anodonta 

 so called. Kennard and Woodward (" List British Non-marine Mollusca," 

 p. 1. 1911) have written, " An attempt having been made by Dr. Haas 

 (Abhandi. Senckenb. Naturf. Gesell., 1910, p. 172) to revive Bruguiere's 

 name of Anodontites for this genus, it may be as well to point out that the 

 type, A. crispata (Journ. Hist. Nat, Paris, 1, 1792, p. 131, pi. viii, figs. 6, 7), 

 is a Guiana shell quite distinct from the European Anodonta. and placed 

 by Simpson (Proc. U.S. Nat. Mus.. xxii. p. 919) in the genus Glabaris Gray 

 (1847). for which it might be used. Lamarck's better-known name is 

 therefore available for the European forms. Therefore Musculus cannot 

 be relegated to the synonymy of the earlier Anodontites, and, as it is earlier 

 than the other three names mentioned by Dall. demands immediate con- 

 sideration. 



Reference to Bolten (p. 156) shows eight species ranged under the genus- 

 name Muscidus, thus :— 



Musculus cygneus = Anodonta sp. 

 a not in us = Anodonta sp. 

 - compressus = nomen nudum. 

 — discors = Modiolaria sp. 



novaezeelandiae = Modiolaria sp. 



moduloides = Modiolus sp. 

 papuanus = Modiolus sp. 

 modulus = Modiolus sp. 



It is obvious that the best usage of Musculus will be that which will 

 cause the least confusion, and, following the principle of elimination, this 

 name would replace Modiolaria. I can see no objection to this course, 

 and therefore designate Musculus discors Bolten as type of Musculus Bolten. 

 The synonymy will read, 



Genus Musculus Bolten, 1798. Musculus Bolten, Mus. Bolten., p. 156, 

 1798. Type : M. discors - Mytilus discors Linne. Svnonyms : 

 Modiolaria Beck, 1840, as quoted by Suter ; Modiolarca Gray in 

 Dieffenbach's " Travels in New Zealand,"' vol. ii, p. 259, 1843 (not 

 Modiolarca Gray, 1847) : Lanistes Swainson. 1840, and Lanistina 

 Gray, 1847, as given by Suter. 



Musculus impactus (Herrmann. 1782). [P. 869.] 



To the synonymy add : Mytilus cor Martyn, Univ. Conch., vol. ii, 

 pi. 77. L784 ; and Musculus novaezeelandiae Bolten, Mus. Bolten., 1798, 

 p. 157. 



Genus Pecten (Miiller, 1776). [P. 873.] 



Hereunder is classed, with subgeneric rank only, Chlamys Bolten, 1798, and 

 Pseudamussium H. and A. Adams, 1858; as a section of the latter, Cyclo- 

 pecten Verrill, 1897, being cited. Although this classification is based upon 

 that of Dall, and has been used by Mr. E. A. Smith in the " Challenger " 

 Report and since, it is not only inconvenient, but I venture to suggest that 

 it transgresses the facts. 



The genus Hinnites Defrance, 1821 (Diet, Sci. Nat,, vol. xxi, p. 169), 

 was proposed for fossils which lie contrasted with Ostrea and Spondylus, 



