ON MOLLUSCA OF THE WEST COAST OF NORTH AMERICA. 559 



Page. No. PI. Fig. 



. . 34 . . . . Cistula trochlearis, Pfr. 



3?* , , . . Chcindropoma rubicundum, Morelet. 



30 .. .. Mcgalomasto masimulacrum, Morelet. Described from Costa Rica. 



37 . . . . Cyclophorus ponderosus, Pfr. 



38 . . . . Cyclophorus translucidus, Sby. 

 233 39 26 11. Macroceramus polystreptus, n. s. 



40 26 9, 10. Helicina Sakini, n. s. Like H. turbinata, Wiegni. Mexico. 



41 . . . . Helicina amcena, Pfr. 



42 . . . . Helicina Oiveniana, Pfr. 



. . 43 . . . . Helicina merdigera, Salle. Described from Nicaragua. 

 . 44 . . . . Helicina Lindeni, Pfr. 



. . 45 . . . . Helicina chryseis, n. s. Mountain forests of Vera Paz. 

 e .46,47,48. . . . Paludinella, 3 species apparently undescribed. 

 . . 49 . . . . Pachycheilus CO-MMUS, Morelet. Larger than in previously 

 noted habitats. 



The vol. for 1863 contains Dr. Baird's descriptions of new species from 

 the Vancouver collections of Lord and Lyall, which will be tabulated, infra, 

 par. 103 ; and the Eeview of Prof. Adams's Panama shells, which has already 

 been quoted. 



60. Sowerby, ' Conchological Illustrations,' 1841. The following are addi- 

 tional localities or synonyms : 



Ko. Fig. 



2 46. Cardium Indicum [is exotic ; closely allied to C. costatum~\. 



56 18. Cardium maculatum, Sby. Cal., &c. = C. maculosum, Sby. (preoc.). 



90 .. Murex imperialis, Swains. Cal. =M. pomum, var. Gmel. [Perhaps dis- 



tinct ; may be the W. I. analogue of bicolor.~] 



91 38. Murex erythrostoma, Swains. Acapulco. [?=bicolor, var.] 



45 102. Cyprcea albuginosa, Gray. Mexico, Ceylon. [The Ceylon shell is pro- 

 bably poraria, sp. 44.] 

 1 45. Erato scabriascida, Gray. Acapulco. Marginella cyprceola, Sby. 



62 40. Fissurdla Lincolni, Gray, MS. [An extremely fine specimen ( supposed 

 fl unique ") of Glyphis aspera, Esch. Mr. Lincoln is also quoted for 

 the " finest of the four known specimens " of Lucapina crenulaia. sp. 19, 

 f. 31,38: "Monterey."] 



54 [Erase this line in the former Report, and substitute as follows : ] 



55 JSulimus umfasciatus, Sby. Galapagos. 



' Thesaurus Conchyliorum,' G. B. Sowerby, &c. To the list in Rep. pp. 

 288, 289, may be added: 



Page. PI. Fig. 



51 12 23. Pecten circularis, Sby. Cal., St. Vincents. [The name may 



stand for the W. Indian shell, the Californian being P. ven~ 



tricosus, jun.] 



57 12 20, 21. Pecten latiauritus, Conr. Cal. +"P. mesotimeris, Conr." 

 261 59 144. Tellina sincera, Hani. N.W. Coast America. [= Panama.] 

 769 165 36-38. Venerupis cylindracea, Desh. C&l., = Petricola Californica, Conr., 



+ P. arcuata, Desh., + P. subglobosa, Sby. 

 865 179 59-77. Cerithium ocellatum, Brug. Gulf Cal., &c. = C. irroratmn [C. 



B. Ad. (Gld. MS.) ; non] Gld. E. E.,= C. interruptum [C. B. 



Ad. : non Mke, necl Gld. 



Sp. Fig. 



47 43,44. Conus* interrupts, Mawe, Wood. [Slender, coronated sp.] non 

 Br. and Sby. Hab. ? 



* Mr. Sowerby remarks, " As the collector's great object is to Jcnoiv the shells, I have 

 preferred, in most cases, giving the species as they stand, stating the alleged differences, 

 and leaving the final decision to individual taste." He further states, with regard to some 

 groups, that " the characters of the shells are very uncertain, and the intentions of the 

 authors still more so." The names, references, and localities are given on lists to face the 

 plates, and the diagnoses separately, with a copious index. An attempt also u made to 



45 



