no 



INDEX OF SPECIES. 



Thylaoodes 



repeiis, 43. 

 Riisei, 43. 

 squamigera, 43. 

 Tiara 



foraminata, 185, 261, P 



460. 

 niuricata, 185. 

 Tivela 



arguta, 60. 

 Tonicia 



Braudti, 317. 

 cieiuilata, 317. 

 Eschsclioltzii, 317. 

 Forbesii, 252, 317, P 193. 

 iiisigiiis, 317. 

 lineata, 134, 170, 317. 



var. I34» 



lineolata, 134, 170. 

 Merokii, 317. 

 Sitchensis, 317. 

 Toiinia 



areola, 192, P 407. 

 bicanaliculata, 333. 

 granosa, 259, 333, P 408. 

 rotundata, 36. 



variegata, 24, 32, 63, 69, 192, 

 238, 259, 774, O 297, 

 333, 363, P 407. 

 Tornatella 



punctocielata, 132, 307. 

 Tornatellina 



Cumingiana, 186, 315. 

 Tornatina 



carinata, 37, 97, 133, 194, 250, 



O313, P 171. 

 cerealis, 23, 133, 227, 313, 



349, P 171,0 203. 

 culcitella, 23, 133, 313, 349, 



U 203. 

 eximia, 89, 90, 133, 166. 

 inoulta, 79, 227, 313, 351, 



U 203. 

 infi-equens, 154, 194, O 250, 



275,0313,0366,? 171. 

 gracilis, P 171, 



Trachydermon 



denlieus, 135. 

 flecteus, 135. 

 Gotliicus, 98, 135. 

 Hartwegii, 135. 

 Interstiuctus, 135. 

 Kiittallii, 113, 135. 

 pseudodeutiens, 98, 135. 

 reteporosus, 135. 

 ti'ifidus, 135. 

 Trapezium 



Californicum,. 102, 306, 



349- 

 Tresus 



capax, 76. 



maximus, 11, 123, 192. 

 Tribulus 



Carolensis, P 480. 

 Trichotropis 



Atlantioa, 217. 



bicarinata, 48, 61, 70, 71, 176, 



220, 223, 328. 

 borealis, 20, 146, 176, 211, 



217, 223, 328, 347, 



348. 

 cancellata, 20, 114, 147, 206, 



210, 211, 213, 217, 



328- 

 ciliata, 72. 

 coronata, 70, 72. 

 costellata, 217. 

 Gouldii, 40, 288. 

 ineimis, 114, 146, 207, 217, 



O328. 

 insiguis, 70, 71, 217, 223, 



O328. 

 multicaudata, 70. 

 Sowerbiensis, 61, 220. 

 umbilicata, 217. 

 Trigona 



sequilatera, P 549. 



aigeiitina, 27, 202, 234, 



246, 305, P 58. 

 bicolor, 366, P 59. 

 Byronensis, 246, P 54. 

 corblcula, 232, 234. 



