572 REPORT— 1863. 



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

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



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



mcllosa, without spines. [Appears to be C. rosea, jun. The fig. is 23, 

 not 24] 



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



28, a, h. \ rubra, CTmel.,+ V. Gumeensis, Gmel.,+ C. altemata, Brod. [f. 28 repre- 

 sents alternata ; 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, howeAer, of the typical form and colour.] 



33. Dione unicolor, Sby., = Chione badia, Gray, = Cyth. liguJa, Anton. AV. Columbia. 

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



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



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



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



Lucas, Xantus, California, proves to be the Dio7ie prora (Ci/thei-ea prora, 

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

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

 Xantus. The quotations in Conch. 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 Cullistu 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. lata. [Panama. Differs from C. lata in inter- 

 nal characters.] 



62, Dione pannom, i^hy.,= Cytherea lufea, Koch, + Callista piieJla, Cpr. Chili, 

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

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

 Mr. Cuming regards the Peruvian and Peninsular forms as dstinct. It 

 is not known along the Central American coast.] 



25. Circe mimmulina, Lam. " Central America." [Probably not fi-om the 

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

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



27. Cytherea. In this genus are grouped the Triyonce ; besides the typical species, 

 =-Meretrix, Gray. 

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

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

 Californian species. San Francisco, S. Diego, &c.] 



27. Cytherea radiata, Sby., + C. yraeilior, Sby.,= V. Salanyensis, D'Orb. = T. By- 

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



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

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

 Perhaps not identical with Lam.'s species.] 

 9. Tapes y rata, Titish. Philippines. [May stand as T. i^es/iai/esiV, if it be con-, 

 ceded that Saj'^'s V. yrata ranks best with Tapes.'\ 



7. Solarium granulatum, Lam. Mexico. 



8. Solarium verrucositm, Phil. W. Indies. ? = S. gramdatmn, var. 



13. Solarium placentula, \l\\e.=placentale,'\'RA.s. Bay Magdalena, 7 fms., Belcher. 



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

 " from same locality (Pan., Mex., W. I.)," but gi-ows much larger. [Tlie 

 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. 



13 2 1 

 15. <.-•',' / > Conus regius, Chem., = C. princeps, Ln., W. Mexico. 



212. Jiqa' -1 1* ( Conus Largillierti, \\\QW. Mexico. [Coast not stated.] 



' ■ ' ' ■ ' 58 



