T U R R I T E L L A 



Species 56. fMus. Belcher.) 



TuRRlTELL.Y BICOLOE. Turr. testd acuminato-tnrrUd, aii- 

 fractibus decern ad duodecim, cotivexis, suUilisdme qua- 

 driUrat'm ei striatis, liris distantibus obscure (jranulath; 

 aureo-luted, suturis Urisque nigrescente-purpureis. 



The two-coloured Turritell.4.. Shell acuminately 

 (nrreted, wliorls ton to twelve in number, convex, 

 very finely four-ridged and striated, ridges distant, 

 obscurely granulated ; rich yellow, sutures and ridges 

 blackish purple. 



Adams and Reeve, Moll. Voy. Samarang. 



Hub. China Seas. 



In addition to the above characters there are a few 

 puckered obliquely wrinkled striae next the sutures. 



Species 57. (Mus. Belcher.) 



TuRRlTELLA CANALICULATA. Turr, tcstd acuminato-tur- 

 riid, anfractihiis duodecim, spiraliter acute sex-Uratis 

 et striatis, iiiterstitiis striis obliquis cancellatis, liris 

 tenuibus, duabus inferioribtts prominulis ; sordide alba. 



The channelled Torritella. Shell acuminately tur- 

 reted, whorls twelve in number, spii-ally sharply six- 

 ridged and striated, interstices cancellated with 

 oblique strias, ridges thin, the two lower ones rather 

 ])romiuent ; dull white. 



Adams and Eeete, Moll. Voy. Samarang. 



Hab. China Seas. 



The two lower ridges, more prominent than the rest, 



form a spiral channel immediately above the suture. 



Species 58. (Mus. Belcher.) 



TuRRiTELLA vittulata. Turr. testd acuminafo-furritd, 

 basi subconcavu, aiifractibus duodecim, ad sufuras con- 

 tractis, creberrime spiraliter striatic, striis elevatis, sub- 

 irregularibm, anfraciibus perpaucis primis bicarinatis ; 

 fiiscesceiite, striis iuterrupte castaneis. 



The finely-filleted Turritella. Shell acuminately 

 turreted, sUghtly concave at the base, whorls twelve 

 in number, contracted at the sutures, very closely 

 spirally striated, striae raised, somewhat irregular, 

 first few whorls two-keeled ; light-brown, striiE 

 stained with chestnut here and there in an interrupted 



Adams and Reeve, Moll. Voy. Samarang. 

 Hab. China Seas. 



The stria.^ of this species are not articulated with 

 chestnut, but merely coloured in an u'regidarly interrupted 

 manner. 



Sjiecies 59. (Mus. Belcher.) 



Turritella uongelata. Turr. testd acute subulatd, 

 basi angidatd, anfraciibus sedeeim, convexo-plauis, 

 leevibtis, obscure triliratis, liris tenuibus, distantibus ; 

 pellucido-albd. 



The congealed Turritella. Shell sharply subulate, 

 angled at the base, whorls sixteen in number, con- 

 vexly flattened, smooth, obscurely three-ridged, 

 ridges fine, distant ; transparent white. 



Adams and Reeve, Moll. Voy. Samarang. 



Hab. China Seas. 



Transparent at the base, but 



opake towards the 



[ipex 



Species GO. (Mus. Brit.) 



Turritella pagoda. Turr. testd subpyramidali-tun-ita, 

 anfraciibus quatuordecim, spiraliter acute liratis, baun 

 versus coiispicue acute unicostatis, anfraciibus perpaucis 

 primis bicostatis, casta superiori cito evanidd ; albidd, 

 fulci'scente obscm-e Jlammatd. 



The pagoda Turritella. Shell somewhat pyramidally 

 turreted, whorls fom'teen to fifteen in number, spii-ally 

 sharply ridged, conspicuously encircled with a single 

 sharp rib towards the base, first few whorls two-ribbed, 

 the upper one quickly disappearing; whitish, ob- 

 scurely flamed with light fulvous colour. 



Ilab. New Zealand ; Dr. Sinclair. 



Distinctly characterized by its single spiral keel and 



elegant form; yet intimately allied with the double-ke!>l 



T. conspersa. 



Species Gl. (Mus. Brit.) 

 Turritella IIookeri. Turr. testd acuminato-turritd, 

 tenuiculu, anfraciibus quindecim, medio concavo-tumidis, 

 carinis duabus acufis, remotis, tmdique conspicue cingu- 

 latis, anfractu ultimo et penultimo subtililer etecalo- 

 striatis ; pellucido-albd. 



stg. 



