— 809 — 
Thais, 41, 549, 784. 
Thecacera, 97, 98, 207. 
Theodoxa, 504. 
Thermhydrobia, 505. 
Thliptodon, 341. 
Thracia, 109, 368. 
Thyca, 21, 456. 
Tonicella, 186, 381. 
Tonicia, 24, 185, 901, 203, 273, 798. 
Torinia, 35, 184. 
Trachydermon, 22. 
Trevelyana, 208. 
Tridacna, 102, 198, 772. 
Triforis, 40, 457, 732. 
Trigonia, 585. 
Triopa, 98, 99, 107, 112, 287. 
Triton, 41. 
Tritonia, 118, 219, 297. 
Tritonium, 495. 
Tritonofusus, 35. 
Trochocochluea, 197. 
Trochonanina, 295, 939. 
Trochotoma, 51. 
Trochus, 20, 27, 108, 119, 127, 198, 131, 
141, 222, 950, 275, 276, 305, 308, 368, 
398, 479, 483, 583, 592, 606, 608, 723, 
149, 782. 
Trophon, 48, 556. 
Truncatella, 206. 
Tryonia, 503, 505. 
Turbinella, 28, 35. 36. 
Turbo, 130, 951, 275. 
Turricula, 164. 
Turtonia, 61. 
Tutufa, 41. 
Tylodina, 161, 259. 
Tylotoma, 393 
U 
Umbonium, 197. 
Umbrella, 99, 188, 190, 207, 293, 246, 
292, 256, 257, 258. 259, 260, 261, 285, 
297. 307, 309, 313, 333, 350. 
Ungulina, 61, 65. 
Unio, 45, 41, 54, 55, 62, 135, 240, 
241, 302, 307, 343, 350, 409, 411, 451, 
469, 481, 495, 504, 559, 533, 554, 555, 
OUI 519, AT: 
Urocyclus, 174, 931, 939. 
Urosalpinx, 26, 297, 418, 467, 471. 
V 
Vaginula, 232, 239, 721. 
Vallonia, 32, 49, 493, 497. 
Valvata, 27, 34, 189, 998, 595, 597, 571, 
611, 619. 
Valvutella, 130. 
Velulina, 163. 
Venericardia, 521. 
Veneridae, 63. 
Venus, 53, 63, 194, 213, 241, 367, 376, 
9923, 992, 598. 
Vermetus, 254, 296, 298. 
Verticordia, 499. 
Vertigo, 34, 47, 5178. 
Vitraea, 6176. 
Vitrella, 411, 506. 
Vitrina, 30, 71, 116, 145, 296, 297, 577, 
918, 9179, 666. 
Vivipara, 35, A8, 652. 
Voluta, 36, 46, 164, 187, 256, 301, 376, 
427, 463, 697, 768 
Volutharpa, 132. 
Volutolyria, 164. 
Volutopsis, 165, 167, 385. 
X 
Xesta, 30, 467 468, 714. 
Xylotrya, 183. 
" 
Yoldia, 60, 101, 213, 348, 402, 468, 722. 
Z 
Zonites, 28, 30, 159, 188, 937, 243, 489, 
484. 483, 666. 
Zospeuin, 595, 579. 
