no 



INDEX OF SPECIES. 



Thylacodes 



repeiis, 43. 

 Rusei, 43. 

 squamigera, 43. 

 Tiara 



foramiuata, 1S5, 261, P 



460. 

 niuricata, 185, 

 Tivela 



arguta, 60. 

 Tonicia 



Biaudti, 317. 

 crenulata, O 317. 

 E.schsclioltzii, O 317. 

 Forbesii, 252, 317, P 193. 

 iusiguis, 317. 

 lineata, 134, 170, 317. 



var. 134. 



liueolata, 134, 170. 

 Merukii, 317. 

 Sitclieusis, 317. 

 Torinia 



areola, 192, P 407. 

 bicanaliculata, ^^3' 

 granosa, 259, 3^3, P 408. 

 rotundata, 36. 



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

 238, 259, ?74, 297, 

 O 333, 363, P 407. 

 Tornatella 



punotofjelata, 132, 307. 

 Tornatellina 



Cuniiiigiana, 186, 315. 

 Tornatina 



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



O313, P 171. 

 cerealis, 23, 133, 227, O 313, 



O349, P 171,0 203. 

 culcitella, 23, 133, 313, 349, 



U203. 

 eximia, 89, 90, 133, 166. 

 inculta, 79, 227, 313, 351, 



U203. 

 infrequens, 154, 194, 250, 



275.0313, 366, P 171. 

 gracilis, P 171. 



Trachydermon 



deiitiens, 135. 

 flecteus, 135. 

 Gothicus, 98, 135. 

 Hartwegii, 135. 

 interstiuctus, 135. 

 Nuttallii, 113, 135. 

 pseudodeutiens, 98, 135. 

 reteporosus, 135. 

 trifidus, 135. 

 Trapezium 



Califoruicum, 102, 306, 

 349- 

 Tresus 



capax, 76. 



maximus, 11, 123, 192. 

 Tribulus 



Caroleiisis, P 480. 

 Trichotropis 



Atlantica, 217. 



bicaiinata, 48, 61, 70, 71, 176, 



220, 223, 328. 

 borealis, 20, 146, 176, 211, 

 217, 223, 32S, 347, 

 348. 

 cancellata, 20, 114, 147, 206, 

 O 210, 211, 213, 217, 

 328. 

 ciliata, 72. 

 coronata, 70, 72. 

 costellata, 217. 

 Gouldii, 40, 288. 

 inermis, 114, 146, 207, 217, 



O328. 

 insignis, 70, 71, 217, 223, 



O328. 

 Hiulticaudata, 70. 

 Sowerbieusis, 61, 220. 

 umbilicata, 217. 

 Trigona 



lequilatera, P 549. 



argentina, 27, 202, 234, 



246, O 305, P 58. 

 bicolor, O 366, P 59. 

 Byronensis, 246, P 54. 

 corbicula, 232, 234. 



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