572 REPORT 18G3. 



Centr. Am. [The Pacific shells should rank with species 22, if sup- 

 posed distinct. The fig. is 24, not 23.] 



24. Dione exspinata, Rve. Centr. Am. Distinct, if the others are ; like semila- 



mettosa, without spines. [Appears to be C. rosea,jvm. The fig. is 23, 

 not 24.] 



25. I Dione circinata, Born. Mazatlan, Mus. Cum. [without authority.] = F. 



28 ; a, b. \ rubra, Gmel.,+ F. Guincensis, Gmel.,-f (7. alternata, Brod. [f. 28 repre- 

 sents alternatci", the other figures appear to be from West Indian spe- 

 cimens, though that ancient locality is not mentioned. Several of the 

 reputed West Coast shells are, however, of the typical form and colour.] 



83. Dime unicolor, Sby., = Chione badia, Gray,= Cyth. liffiila, Anton. \V. Columbia. 

 38. Dione prora, Conr. " Cape St. Lucas, Xantus, California ; Carpenter." 



[A very distinct form among the thin inflated species j only yet found at 



the Sandwich Is., v. no. 45.] 



45. "(Miis. Smithsonian Institute of N. America.) This shell, from Cape St. 



Lucas, Xantus, California, proves to be the Dione prora ( Cytherea prora, 

 Conr.) of our preceding plate." [Mr. Sowerby's figure well represents 

 the unique specimen from Cape St. Lucas, which was taken alive by Mr. 

 Xantus. The quotations in Couch. Ic. would lead to the inference that 

 " Xantus " was regarded as that part of " California " in which Cape St. 

 Lucas is situated. Both the external and internal characters require 

 that a separate name be given to the shell, which stands as Callista pol- 

 licaris, Annals Nat. Hist. vol. xiii. p. 312.] 



46. Cytherea consanguinea, C. B. Ad. Mus. Cum. Apparently a small spe- 



cimen of a variety of C. Iceta. [Panama. Differs from C. Iceta in inter- 

 nal characters.] 



62. Dione pannosa, Sby., = Cytherea lutea, Koch, + Callista puella, Cpr. Chili, 

 Peru, Mazatlan. [No authority for Mazatlan. The name pnetta given 

 to the Cape St. Lucas specimens was intended as varietal ; although 

 Mr. C uming regards the Peruvian and Peninsular forms as distinct. It 

 is not known along the Central American coast.] 



25. Circe nummulina, Lam. " Central America." [Probably not from the 

 American seas. Admiral Sir E. Belcher is, however, confident that he 

 dredged many well-known E. Indian forms in deep water, off San Bias.] 



27. Cytherea. In this genus are grouped the Trigonce j besides the typical species, 



= Meretrix, Gray. 



3. Cytherea crassatelloides, Conr. "Bay of California." [Not known geogra- 

 phically. The shell is not found in the Gulf, beinf a most characteristic 

 Californian species. San Francisco, S. Diego, c.J 



27. Cytherea radiata, Sby., -f C. gracihor, Sby.,= F. Salangensis, D'0rb.= T. By- 

 ronensis, Gray. Salango and Xipixapi, 9 fms. sandy mud, Owning. 



45. Cytherea nitidula, Lam. Mediterranean. [The figures and descriptions of 

 Sby. and Rve. well represent specimens from Cape St. Lucas, Xattlus. 

 Perhaps not identical with Lam.'s species.] 



9. Tapes grata, Desh. Philippines. [May stand as T. Deshayesii, if it be con- 

 ceded that Say's F. grata ranks best with Tapes."] 



7. Solarium granulatum, Lam. Mexico. 



8. Solarium verrucosum, Phil. W. Indies. ? = S.. gramdatnm, var. 



13. Solarium placentula, [Rve. = placentale,'] Hds. Bay Magdalena, 7 fms., BeMier. 



19. Solarium quadriceps, Hds. Panama. Y oung state of same type as sp. 7 and 8, 

 " from same locality (Pan., Mex., W. I.)," but grows much larger. [The 

 Texan shells in Mus. Smiths, are as large as those from Cape St. Lucas : 

 the variations on each coast are coordinate.] 



63. Kiener. The following species may be added to the list quoted from 

 " Coquilles Vivantes," in Rep. pp. 293, 294 : 



Page. PL Fig. 

 15. I jY > Conus regius, Chem.,= C. princeps, Ln., W. Mexico. 



212f 1 100 11* \ Conus Lar y miert i> Kien - Mexico, [Coast not stated.] 



58 



