T R I C H T R P I S. 



Species G. (Mus. Brit.) 



Triciiotropis flavidula. Tri. testa pi/ramidat'i, itn- 

 gustd, lenui, fam'dii ; spird elevata, acuminuti'i, 

 anfractibiis angulatis, contis supra suturam duabus, 

 cinctis, idtimo qiiadricostato, inter costas cancel- 

 lato ; umhilico angitsto ; apertura parvd, suhtrigond. 



The yellowish TiiiciiOTUoi'LS. Shell pyramidal, narrow, 

 thin, yellowish ; spire elevated, acuminated, whorls 

 angular, encircled with two ribs above the suture ; 

 the last four-ribbed, cancellated between the ribs ; 

 umbilicus narrow ; aperture small, subtrigoual. 



Hinds. Voyage of the Sulpliiir. 



Adams. 



Hab. Sitka, North America. 



Species 7. (Fig. a, b, Mus. Brit.) 



Triciiotropis cedo-nulli. Tri. testa suhpyramidata, 

 rufescenti, sulcis concentricis et costis moniliformibus 

 spiraUbus cancellatd ; spird elevald ; apertiin'i sub- 

 rotundd; columelld subtruncatd, retrorsd ; labia 

 externo aniice sinuatim prodiicto. 



The nonpareil Trichotuopis. Shell somewhat pyra- 

 midal, rather reddish, cancellated with concentric 

 grooves and beaded spiral ribs ; spire elevated ; 

 aperture rather rounded ; columella rather trun- 

 cated, turned backwards ; outer lip sinuously 

 produced in front. 



A. Adams. Proc. Zool. Soc. 



Hab. Japan. 



The beauty of this species consists in its cancellated 



and beaded sculpture. 



Species 8. (Mus. Brit.) 

 Trichotuopis vnicai;inata. Tri. te^td Uecigald, ovatu- 



sid,f)isifnri 

 spird clrn 



SKJWnii 1 



icpie 



'/"" 



'de tcniii, Jiaridd 



dutd ; 

 ifractibus angulatis, ad angulum 

 atis ; umbilico lato ; aperturd 

 oblicpie siihquadratd, ad termimim anticum oblique 

 acuminato ; labio externo ad medium arcuato, supr& 

 infrdque contracto. 



The one-keeled Trichotropis. Shell smooth, oval- 

 subfusiform, covered with a thin, yellowish epi- 

 dermis ; spire elevated ; whorls angular, with a 

 single keel at the angle ; umbilicus broad ; aper- 

 ture obliquely acuminated; outer lip arched at 

 the middle, contracted above and below. 



Broderip and Sowerbv. Zoological Journal, iv. 

 p. 376. 



Hub. Japan. 



Species 9. (Fig. a, b, Mus. Brit.) 



Trichotropis quadeicarin.\ta. Tri. testd pi/ramidatd, 

 iiriiiuiiiatd, stramined, epidermide tenui, pallida 

 fused iiidiitd ; spird elevatd, anfraclibus angulatis, 

 siiprd suturam bicarinatis ; ultimo ventricoso, medio 

 bicarinato ; umbilico parvo ; aperturd subquadratd, 

 antice acuminatd ; columelld tortud. 



The square-keeled Trichotropis. Shell pyramidal, 

 acuminated, straw-coloured, covered with a thin, 

 pale brown epidermis ; spire elevated, whorls 

 angular with two keels above the suture ; the last 

 ventricose, two-keeled in the middle ; umbilicus 

 small ; aperture rather square, acuminated ante- 

 riorly ; columella tortuous. 



A. AnAMS. MS. 



Hab. Japan. 



The whorls have straight sides between the two 



August, 1874. 



