326 U.S. NATIONAL MUSEUM BULLETIN 287 



tropicalis Dall and Ochsner, Alectrion 1928, PCAS, ser. 4, vol. 17, 



no. 4, p. 109, pi. 2, fig. 9 (Pliocene?, Seymour Island, Galapagos 



group; CAS 2925). 

 tropicalis, Hanleyia 1879, SREA, art. 4, p. 101; 1879, PUSNM, vol. 



1, no. 48, p. 319, n.u.; 1881, BMCZ, vol. 9, no. 2, p. 53 (Sand 



Key); 1889, BMCZ, vol. 18, p. 415, pi. 26, figs. 8c,d. 

 tropidita Dall and Bartsch, Odostomia (Salassia) 1909, USNMB 



68, pp. 13, 134, pi. 13, fig. 3. New name for Salassia carmata 



DeFolin, 1872, not Scalenostoma carinata Deshayes, 1863, nor 



Odostomia carinata H.Adams, 1873. 

 Tropidocyclas 1903, PBSW, vol. 16, p. 7. Type-species by original 



designation: Pisidium hensloivianum Sheppard. 

 Tropidomya Dall and Smith in Dall, 1886, BMCZ, vol. 12, no. 6, p. 



301. Type-species by original designation: Neaera abbreviata 



Forbes. 

 trosaetes, Cuspidaria 1925, PUSNM, vol. 66, art. 17, no. 2554, p. 



16, pi. 29, fig. 5 (ALBATROSS sta. 4992, Japan Sea; USNM 



110770). 

 Trubatsa 1889, BMCZ, vol. 18, pp. 18, 215, 216. Type-species by 



monotypy: Typhis lo7igicomis Dall. 

 trullata, Liotia bairdii 1889, BMCZ, vol. 18, pp. 33, 389 (no locality 



given). 

 truncaria, Macoma 1916, CSWM, p. 37, n.u.; 1916, PUSNM, vol. 



52, no. 2183, p. 414 (Arctic coast between Cape Halkett and 



Garry River; USNM 210916). 

 truncata, Cypraeolina 1927, PUSNM, vol. 70, art. 18, no. 2667, pp. 



4, 48 (off Georgia and Fernandina [Floridal ; USNM 108336). 

 truncata, Malletia 1908, BMCZ, vol. 43, no. 6, pp. 219, 384, pi. 17, 



fig. 1 (ALBATROSS sta. 3374, SW of Malpelo Island, Gulf of 



Panama; USNM 122906). 

 truncatutn, Cerithiopsis stejnegeri 1887, PUSNM, vol. 9, no. 571, p. 



304, pi. 4, fig. 5 (Unalashka and Chica Islands, Alaska). 

 irunculus, ISucula proxima 1898, TWFIS, vol. 3, pt. 4, p. 574 (Long 



Island Sound N to Nova Scotia). 

 trunculus, Sphenia 1916, CSWM, p. 41, 7iM.; 1916, PUSNM, vol. 



52, no. 2183, p. 415 (San Diego, California; USNM 160116). 

 tryonii, Benthobia 1889, BMCZ, vol. 18, pp. 12, 132, pi. 35, fig. 6 



(USFC sta. 2678, off Cape Fear, North Carolina). 

 tryonii, Drillia 1889, BMCZ, vol. 18, pp. 9, 83 (BLAKE sta. 231, 



near St. Vincent; and others). 

 tryoni, Pecten 1889, BMCZ, vol. 18, p. 438 (ALBATROSS sta. 



2602, off Cape Hatteras [North Carolina]). 

 tuba, Orygoceras (Bovillina) 1924, USGSPP 132-G, p. 113 (Castle 



Creek, Owyhee County, Idaho; USNM 333525). 



