232 



REPORT — 1856. 



Semele rubrolineata, Com*. = S. simplex, 

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



Tellina [resembling Su'ensoni, Morch, 

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



gemma, Gid. 198. San Juan. 



pur a, Gld. 19/. SanDiego. 



. 57. Mazatlan. 



secta, Com*. 139. San Diego. 



nasuia, Com*. 147- San Diego. 



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



, C. B. Ad. 188. Acapulco. 



regia, Hani. 52. Mazatlan. 



Donax punctatostriatus, Hani. 55. Ma- 

 zatlan. 



carinatus, Hani. 93. Mazatlan. 



Calif ornicus, Com*. = Icevigatus, 



Desii. 159. SanDiego. 



abruptus, G\d.= Calif ornicus, Com*. 



var. 160. San Diego. 

 Calif ornicus, Conr. var. 161. San 



Diego. 



, var. 199. San Juan. 



Mactra (Lutraria) nasuta, Gld. [1—fal- 



cata]. 49. ? Mazatlan; San Pedro. 



Calif ornica, Com. 100. ?Mazatlan. 



Lutraria ventricosa, G\d.=Mactra exo- 



leta, Gray. 50. ? Mazatlan. 



undulata, Gld. 9. La Paz. 



Gnathodon mendicus, Gld. =Rangia tri- 



gona, Petit. 95. ? Mazatlan. 

 "Saxidomus Nuttalli, Conr. = Venerupis 



Petit ii, Desk." —Tapes maxima, Phil. 



156. Monterey. 

 Saxicava carditoides, Com*. 110, 111. 



? Monterey. 

 Cordieri, ~De$h.=Venus lamellifera, 



Com*. 107. Monterey. 



, sp. ind. 11. La Paz. 



plioladis (Desh., Guer. Mag. 1841, 



pi. 40). 29. San Diego. 

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



31. Guaymas. 

 dacty lus, Sow. (very rare). 11. La 



Paz. 

 Venus, sp. ind. 124. ? Mazatlan. 



amatliusia, Pbil. 83, 59. Mazatlan. 



. 53. Mazatlan. 



Cohimbiensis. 85,87. Guaymas. 



gnidia, Sow. 63. Mazatlan. 



straminea, Conr. 22. Guaymas. 



reticulata. 17. La Paz. 



simillima, Sow. 172. San Diego. 



• Californiensis, Brod. (not Com*.), 



Mus. Cum. 146. San Diego. 



Venus Petitii, \av. = straminea, var. teste 



Nutt. 185. San Diego. 

 Calif ornicus, jun., Conr —compta, 



Mus. Cum. 171. San Diego. 

 , = compta, Mus. Cum. 61. 



Mazatlan. 

 • fiuctifraga, Gld. =Nuttalli, Com*. 



(nonDesh.)t. 145. SanDiego. 

 Anomalocardia subrugosa, Sow. 58. Maz. 

 Dione circinata (Mazatlan, Rev. — Steele). 



73. ? Mazatlan. 



rosea. 62. Mazatlan. 



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



Is. 3 Marias. 

 biradiata, Gray=_D. Chionaa. 7 '• 



La Paz. 

 Dosinia Dunkeri, Fhil. 56. ? Mazatlan. 



gigantea, Sow. 19. La Paz. 



saccata,G\d.= Cyclinasubquadrata, 



Hani. 99. Mazatlan. 

 Trigonacrassatelloides, Conr. 153. San 



Diego. 



. 94. Mazatlan. [?] 



corbicula, Gld. =radiata, Sow. 122. 



? Mazatlan. 

 Chama Pacifica, Gld.= C. frondosa, var. 



Mexicana. On Vermetus. 24. Guaym. 



exogyra, Conr. San Pedro. 



, with C. venosa. 150. San 



Diego. 



2)ellucida. 176. SanDiego. 



Cardita afjinis, Gld. =Californica, Desh. 



26. Guaymas. 

 Cardium Panamense, Sow. 84. ?Maz. 

 xanthocheilum, Gld. ■=-luteolabruin i 



Gld. 132. SanDiego. 

 Nuttalli, Conr. = Calif orniense, 



Desh. 138. San Diego. 



substriatitm, Com*. 158. SanDiego. 



elatum, Sow. 194. San Diego. 



Diplodonta orbella, Gld. [do. Nutt.] 137, 



138. San Diego. 

 Lucina punctata, Linn. 16. La Paz. 



, Linn. 136. San Diego. 



Cyrena aliilis, G\d.=Mexicana, var. 79. 



? Mazatlan. 

 Anodon ciconia, Gld. 48. ? Mexico. 

 Mytilus, sp. ind. 47. San Francisco. 

 Modiola, sp. ind. 20. San Francisco. 



capax, jun. 1 7'^- San Diego. 



, Com*., very large valve. 4. 



La Paz. 

 Lithophagus falcatus, Gld. = Gruneri, 



Phil. 117. Monterey. 



China Seas ; " but, as in the case 



* The locality given to ttfSsirnplex by Lieut. Belcher 

 of Dos'uiia simplex, is almost certainly erroneous. 



■\ This is the V. callosa (quasi Conr.) of Deshayes. The specimen is marked " ? Stutchburyi ;" 

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

 posterior crenations, and displaying a few Cardium-\ike intercalations at the margin. 



