532 REPORT—1863. 
Otia, Page. 
93. ° Mytilus (Modiola) flabellatus. {The northern form of Modiola recta, Cony. 
The “specimens from the Gulf of California” must have been JZ. Bra- 
ziliensis, intermixed by accident. | 
94, Mytilus trossulus [is scarcely a variety of M. edulis, which is very abundant 
along the coast, under its usual modifications of form and colour; but 
generally of small size]. 
95. Pecten hericeus, Gld. [=P. hastatus, Sby. sen. ]. 
97, 246. Terebratula (Waldhemia) pulvinata. 
97, 246. Terebratula (Terebratella) caurina. 
BE. E. Moll. 
Page. 
113. Planorbis corpulentus is of Say. 
143. Melania plicifera is of Lea. 
436. Anodonta angulata is of Lea. 
206. Scalaria ?australis [is abundantly confirmed from the Vancouver district. 
It should be called Opalia borealis, Gld.). 
244, Purpura ostrina, Gld., ‘Otia,’ p. 225 [is an aberrant smooth var. of P. 
lapillus, Coop., non Ln.; the normal state being P. saxicola, Val.]. 
The following species, described in the ‘ Otia’ and ‘ E. E. Moll.’ as from ¢ N. 
Zealand ’ and an unknown locality, are really from Puget Sound.. 
Otia, Page. 
56, O45, Trochus pupillus, Gld., March 1849: N. Zealand (Ziziphinus in Index) := 
Margarita calostoma, A. Ad., 1851. Comp. T. modestus, Midd. [which 
is, however,=ligatus, Gld.,=costatus, Mart. This species is named in 
the B. M. Col. “ M. costellata, Sby.,” but is distinct, teste A. Ad. & 
Mus. Cum. ]. 
64, 245. Fusus (-Neptunea) incisus, Gld., May 1849. Hab.?— [= Tritonium 
(Fusus) Sitchense, Midd., 1849,= Buccinum dirum, Rve., 1846.] 
e. 
210. Venus calearea [is correctly described by Dr. G. as from N- Zealand; 
although quoted by him as the Oregon analogue of V. mercenaria]. 
211. Tellina Californica, Conr. [= Macoma inconspicua). 
211. Triton tigrinum [is from Central America, not} Puget Sd. 
211. Pecten Fabricti, Phil. [is the young of Islandicus: Dr. G.’s shells are the 
young of P. (“rubidus, ?var.”) Hindsit']. 
211. Fusus cancellinus. [re G.’s shells are Octnebra, var. aspera. | 
212. Purpura lagena, Gld. [MS., is probably saxicola, var. }. 
213. Pecten Townsendi [has not been identified }. 
213. Venus ampliata [is believed by Dr. G. to have been first designated by him 
as a species, afterwards proved=rigida (Petitii), var. ]. 
44, Middendorff.—The synonymy given in Rep. pp. 214-222 is that of 
the author, not of the writer of the Report, who is by no means prepared to 
accept the learned doctor’s identification of species. The three Chitons quoted 
with doubt from Tilesius have not been confirmed, as from Kamtschatka, by 
any other writer. The Ch. giganteus has the aspect of the large Ischnochiton 
Magdalensis ; the Ch. muricatus belongs to the Lophyrus group, which is not 
known so far north ; and the Ch. setosus has also a 8. American aspect. The 
treatise “‘ De Chitone Giganteo Camtschatico additamentum ad Zoographiam 
Rosso-Asiaticum, auctore Tilesio,”’ was read March 19, 1823, and published 
in 1824. It contains a very valuable and (for that period) remarkable account 
of the anatomy of Chitons, but it does not profess to name and describe species 
in the modern sense. The names, therefore, had better be dropped. Midden- 
dorff’s new species were first described in the ‘ Bulletin de la Classe Physico- 
Mathématique de Académie Impériale des Sciences de St. Pétersbourg,’ a 
work of which few complete copies are known in England, under the follow- 
ing dates. 
April 20, 1847: vol. vi. No. 8 (total number 128), — 
