INDEX 



533 



T'ectarius, 413 



Tectibranchiata, 10, 4^9 



Tectiira, 305, 405 



Tectus, 408 



Teeth in aperture of the shell, 63 



Teinostoma. 247, 408 



Teinotis, 407 



Telescopium, 252, 4^6 



Tellina, 446, 453, 453; T. balthica, 

 variation, 84 



Tellinacea, ^JJ 



Telotremata, 511 



Tenacity of life, 37 



Tenison- Woods, on red blood, 171; 

 on shell-eyes, 189 



Tennent, Sir J. E., on musical sounds 

 produced by Mollusca, 50 



Tennentia, 304, 314, 338, 440 



Terehellum, 4I8 ; jumping powers, 64 



Terehra, 246, 263, 426, 426; radula, 

 219 



Tei'ebratella, 468, 487 ; distribution, 

 486 ; fossil, 506 ; stratigraphical dis- 

 tribution, 508 



Terebratula, 467, 408, 487 ; size, 484 ; 

 distribution, 485, 486 ; fossil, 492, 

 499, 506 ; stratigraphical distribu- 

 tion, 506, 507, 508 



Terebratulidae, 487; fossil, 500, 505, 

 506 ; stratigraphical distribution, 507, 

 508 



Terebratulina^ 466, 479, 487 ; larva, 

 482 ; distribution, 486 ; fossil, 506 ; 

 stratigraphical distribution, 508 ; 

 form of shell, 510 



Teredina, 457 



Teredo, 262, 457, 458 ; nervous system, 

 206 ; intestine, 241 



Tergipes, 432 



Terquemia, 450 



Testacella, 22, 52, 440 ; habits, etc., 49, 

 51 f. ; pulmonary orifice, 160 ; eyes, 

 186 ; radula, 231 ; anus, 241 



Testicardines, 466, 487; muscles, 476; 

 fossil, 497, 504 ; external characters, 

 497 ; internal characters, 499 ; attach- 

 ment of muscles, 501 ; stratigraphical 

 distribution, 508 



Testis, 135 



Tethyidae, 216 



Tethys, 432 



Tetrabranchiata, 391 f. 



Thala, 425 



Thalassia, 319 



Thalotia, 4O8 



Thapsia, 329 



Thaumasia, 349, 442 



Thaumastus, 356, 442 



Thecacera, 434; radula, 229 



Thecidiidae, 487; fossil, 501, 506, 508 



Thecidium, 475, 479, 480, 483, 487; 

 fossil, 506, 508 



Thecosomata, 435 



Thelidomus, 346-351, 350, 44I 



Theora, 453 



Therasia, 441 



Thersites (Helicidae), 322, 325 



Thersites (Fasciolariidae), 424 



Thetis, 454 



Thracia, 245, 459 



Thread-spinning, 29 



Thridachia, 432 



Thyca, 76, 79 



Thyropliorella, 330, 440 



Thysanoteuthis, 390 



Tiedemannia, veliger, 132 



Tiphobia, 332, 333, 417 



Titicaca, L., Mollusca of, 25 



Todarodes, 390 



Tomichia, 414 



Tomigerus, 334, 356, 358, 442 



Tomocyclus, 354 



Tomostele, 330, 440 



Tonicella, 403 



Tonicia, 403 ; eyes, 188 



Torellia, 41I 



Torinia, 413 ; radula, 224 ; operculum, 

 269 



Tornatellina, 278, 319, 323-327, 338, 

 358, 443 



Tornatina, 250, 430 



Torquilla, 442 



Toiicasia, 455 



Touch, sense of, 177 



Toxoglossa, 218, 426 



Tracliia, 314 



Trachyceras, 397 



Trachydermon, 403 



Trachyteuthis, 389 



Tralia, 439 



Transovula, 419 



Trematis, 492, 493, 504 ; stratigraphi- 

 cal distribution, 507, 508 



Trematonotus, 407 



Tremoctopus, 384 ; radula, 236 ; hec- 

 tocotylus, 137 



Trevelyana, 434 



Trichia, 316 



Trichotropis, 275. 4II 



Trirula, 302 



Tridacna, 273, 455 



Triforis, 4 16 ; radula, 224 



Trigonellites, 397 



Trigonia, 15, 254, 269, 448 ; jumping 

 powers, 65 ; distribution, 370 



Trig onochl amy s, 296, 440 



Trigonostoma, 426 



Trimerella, 495, 504, 508, 511 



Trimerellidae, 493, 494, 496, 504 ; strat- 

 igraphical distribution, 507, 508 



Trinacria, 448 



Tj'iodo2)sis, 340, 441 



TriojJa, 434 



Triopella, 434 



