232 



REPORT — 1856. 



Semele rubrolineata, Conr. = S. simplex, 

 A. Ad. teste Cum.* 141. San Diego. 



Telliiia [resembling Suensoni, Mbrcb, 

 Brazil, and T.caZcareft]. 142. SanDiego. 



.„ gemma, Gld. 198. San Juan. 



pttra, Gld. 197. San Diego. 



. 57. Mazatlan. 



secta, Conr. 139. San Diego. 



nasuta, Conr. 147- San Diego. 



vicina, C. B. Ad. 130. ? Mazatlan. 



, C. B. Ad. 188. Acapulco. 



regia, Hani. 62. Mazatlan. 



Donax punctatostriatus, 'Rani. 55. Ma- 

 zatlan. 



carinatiis, Hani. 93. Mazatlan. 



Californicus, Conr. = Icevigatus, 



Desli. 159. San Diego. 



. abruptus, GIA.— Californicus, Conr. 



var. 160. San Diego. 



Californicus, Conr. var. 161. San 



Diego. 



, var. 199. San Juan. 



Mactra [Lutraria) nasuta, Gld. [l=^fal- 

 cata]. 49. ? Mazatlan; San Pedro. 



Calif ornica, Conr. 100. ? Mazatlan. 



jMtraria ventricosa, Gl(\..=Mactra exo- 



leta. Gray. 50. ? Mazatlan. 



undulata, Gld. 9. La Paz. 



Gnathodon mendicus, Gld. =Rangia tri- 



gona, 'Petit. 95. ? Mazatlan. 

 "Saxidomus Nuttalli, Conr. = Venerupis 



Petitii,De%\\." =Tap)es maxima, Phil. 



156. Monterey. 

 Saxicava carditoides, Conr. 110, 111. 



? Monterey. 

 Cordieri, Desh.= Femts lamellifera, 



Conr. 107. Monterey. 



, sp. ind. 11. La Paz. 



■ pholadis (Desh., Guer. Mag. 1841, 



pi. 40). 29. San Diego. 

 Petricola bulbosa, G\d.=robusta, Sow. 



31. Guaymas. 

 • dactylus, Sow. (very rave). 11. La 



Paz. 

 'Venus, sp. ind. 124. ? Mazatlan. 



amathusia, Pbil. 83, 59. Mazatlan. 



. 53. Mazatlan. 



Columbiensis. 85, 87- Guaymas. 



gnidia, Sow. 63. Mazatlan. 



straminea. Com-. 22. Guaymas. 



reticulata. 17- La Paz. 



simillima,Sov/. 172. SanDiego. 



■ Calif or niensis, Brod. (not Conr.). 



Mus. Cum. 146. San Diego. 



Venus Petitii,\nr. = straminea,\a.r. teste 

 Nutt. 185. San Diego. 



Californicus, jun., Conr =co»!^^a,- 



Mus. Cum. 171- San Diego. 



, = compta, Mus. Cum. 61. 



Mazatlan. 



fiuctifraga, Gld. =NutialU, Conr. 



(non Desh.)t. 145. San Diego. 

 Anomalocardia subrugosa. Sow. 58. Maz. 

 Dione circina^a (Mazatlan, Rev.— Steele). 

 73. ? Mazatlan. 



rosea. 62. Mazatlan. 



dione, G\d.=lupinaria, Less. 129. 



Is. 3 Marias. 



biradiata, Gray=D. Chionma. 7. 



La Paz. 

 Dosinia Dunlceri, 'Ph\\. 56. ?Mazatlan. 



gigantea. Sow. 19. La Paz. 



saccata,G\d.= Cyclinasubquadrata, 



Hani. 99. Mazatlan. 

 Trigona crassatelloides, Conr. 163. San 

 Diego. 



. 94. Mazatlan. [?] 



corbicula,G\d. =radiata,Sow. 122. 



? Mazatlan. 

 Chama Pacifica, G\d.=C . frondosa, var. 

 Mexicana. On'Vermetus. 24. Guaym. 



exogyra, Conr. San Pedro. 



, with C. venosa. 150. San 



Diego. 



pellucida. 176. SanDiego. 



Cardita affinis,G\&. = Calif ornica,Desh. 



26. Guaymas. 

 Cardium Panamense, Sow. 84. ?Maz. 



xanthocheihm, Gld. = luteolabrum, 



Gld. 132. SanDiego. 



Nuttalli, Conr. = Califormense, 



Desh. 138. San Diego. 



substriatum, Com. 158. SanDiego. 



elatum. Sow. 194. San Diego. 



Diplodonta orbella,Gk\. [do. Nutt.] 137j 



138. San Diego. 

 Lucina punctata, Linn. 16. La Paz. 



, Linn. 136. San Diego. 



Cyrena altilis, G]d.=Mexicana,\ar. 79. 



? Mazatlan. 

 Anodon ciconia, Gld. 48. ?Mexico. 

 Mytilus, sp. ind. 47. San Francisco. 

 Modiola, sp. ind. 20. San Francisco. 



capax, jun. 173. San Diego. 



, Conr., very large valve. 4. 



La Paz. 

 Lithophagus falcatus, Gld. = Gruneri, 

 Pbil. 117. Monterey. 



* The locality given to S. simplex by Lieut. Belcher is " China Seas ; " but, as in the case 

 of jDos/)/ /a WM/j/cx, is almost certainly eiToneous. _ , .„,o. .t,u •" 



•I- This is the F. ca?;osa (quasi Conr.) of Deshayes. The specimenis marked "? Stutchburyi; 

 which is a closely allied species from the Pacific Islands, with differently shaped teeth, no 

 posterior crenations, and displaying a few Carrftuwi-like intercalations at the margm. 



