﻿P T E E ? D A. 



I'LATE V. 



(icnus TRIPTERA. (iuo,,. 



'I'i'sIk tuhiiliisii, silbcoiHjm'Ssa, i-r,:iii,-i (rpicrin Urili- 



hidb'ifonnis, ad ajjicem r.ir'nn't ri,;-,il„ri rlm-ht 



"perUn-r, renlfonni. 

 Slii'll tubular, rather compressed, slightly bnlbiforr 



towards the apex, surrounded at the apex with 



circular keel ; aperture reniform. 

 Sjuiiiiyni. Ciin't'rid. Haii<;. 



Species 2". (Mus. Brit.) 

 Tkiptkka columnella. Tri. testa alia, semi2icUiiciJa, 



rersus aperturam suhcompressd, suhaiKjuslatd, 



'ipice rotniulo. 

 'I'lii: MTTLR PILLAR Tiiii'TEHA. Shell white, semipel- 



lucid, rather compressed and narrowed towards 



the aperture ; apex rounded. 

 Ran.;;. D'Orbigny, Voy. Amer. Mc-rid., t. 8, f. 35~3<t. 

 Ores,;-, ol.tn^a. Rang. " 



JLiIk ? 



'i'ho one or two other recorded species are not found 

 in the collections. 



CRESEIt 



Ba,nj. 



T,:Ua elongata, tubidarl.-; injrnmidala, sidiiifon 



iiijaliiia. 

 Shell elongated, tubular, jiyramidal, spine-shajicd 

 Synonym. Stijliola. Lcsueur. 



Species 28. (Fig. n, h, Mus. ?) 



CrESEIS KOTUXDA. I'rr. Irst,! sidjrul h ,i.h't, hit 

 ■■hmijatdj'ere recta. Ira,isr,'r,<;' tr„ii;s,<n,ir 

 apice attcmiatii. ,i,:uiiioi,iti\ J,-riter u 



:<trn,td 

 rcuatii 



nperturd rotinidd. 

 I'liE EOrxDED C'keseis. Shell rather rounded, rathei 



wide, elongated, nearly straight, transversely 



Species 29. (Fig. a, h, Mus. Brit.) 

 Creseis aciculata. Ore. testa ainjustd, Icevlijatd, attcn- 



iiatd, acuminata, dorso amjulatd ; apertiird snbtri- 



fjoiid, labro producto, unispiiwuo. 

 The acicl'lated Creseis. Shell narrow, smooth, 



attenuated, acuminated, angular at the back ; 



aperture rather trigonal, outer lip produced 



with a spine. 

 D'Orbigny. Tab. VIII., f. 2!i-:!l. 

 Hab. Atlantic Ocean. 



Species 30. (Fig. a, b, Mus. Brit. ) 



Creseis striata. Ore. testd lati'i'/scid,!, h-aiiscersc 

 riujatd; aperturd subrntiitidd ; a^iicr refriu-siiu 

 leviter arcuato, acnmiiiatn. 



The striated Ceeseis. Shell rather brcjad, trans- 

 versely wrinkled ; aperture rather round ; apex 

 slightly curved backwards, acuminated. 



Rang. D'Orbigny, Voy. Amer. Merid. Pl.VIII.f.23-2o. 



Hab. Atlantic Ocean. 



Species 31. (Fig. <(, b, Mus. Sowerby.) 



Creseis corniformis. Ore. testa breviilsculd, rotnndd, 

 kevigatd ; aperturd rotnndd, apice acuminata, 

 valide recurvo, unciiiato. 



The horn-shai'ED Creseis. Shell rather short, 

 rounded, smooth ; aperture rounded, apex acu- 

 minated, strongly recurved, hooked. 



D'Orbigny. Voy. Amer. Merid. PL VIII. f. 21. 



Hab. Atlantic Ocean. 



Species 32. (Fig. ,(, ft, Mus. 'r' Copied.) 



Creseis virgula. Cre. testtl latiiisculd, mtiimld, Imvi- 

 gatd; aperturd rutundd, apice afleiuiato, acinni- 

 nato, leviter arcuato. 

 very finely striated; apex attenuated, acnmi- j Xhe twig Creseis. Shell rather broad, rounded, 

 111 i.-.i i- ,„ smooth ; aperture rounded, apex attenuated, acu- 



minated, slightly arched. 

 Rang. D'Orbigny, Voy. Amer. Merid. PI. VIII. f. SC. 

 Hub. Atlantic Ocean. 



lated, slightly arched ; aperture rounded 

 Sowekp.y. 



Hab. ? 



We do not find this species elsewhere describei 



