﻿ANCYLUS.— Plate II. 



alhd, antice exiMusd ; apiee valde retrorso, arii- 

 minato, elevato, lateraUter suhcentrali ; dorso de- 

 clivi. 



De.shates's anctlus. Shell conical, shortly ovate, 

 thin pale horn, opaque, smooth, white within, 

 anteriorly expanded ; apex much thrown back- 

 wards, acuminated, elevated, laterally subcen- 

 tral ; back sloped. 



BouHGUiGNAT. Cat. esp. Journ. Concli. 



Huh. Europe. 



Species 13. (Fig. a, 6, Mus. Brit.) 



Ancylus eupicola. Anc. testd ovatd, dextrali, pro- 

 fundi' calyeifornii, corned, Icpvigatd, pellucidd, 

 darxij 'irnmhi, ,iph-r .<iilui,-iiudnato, ultra margineni 



pn,i;r...l.,,.r.,l,„>,..J.rt.,. 



The rock-inii.\i.itin.; Amyi.i .<. Shell ovate, dextral, 

 deeply cup-shaped, horny, smooth, pellucid, 

 back arched ; apex slightly acuminated, produced 

 beyond the postcro-lateral margin. 



SnOTTLEWORTH. ? 



llah. Teneriffe (on moist rocks). 



Species 14. (Fig. a, b, Mus. Brit.) 



Ancyi.us Soulcyanus. Anc. testd depressd, patidd, 

 coffed, costellis crehris radiatis ei strils iniinitiKai- 

 onis conceiitricis scnlptd, postice awjusfd, luiltce 

 expansa, margine dextrali rectlusculo ; dorso 

 oblique declivi, apice depresso, postice extra-mar- 

 ginali. 



Sodlcy's ancylus. Shell depressed, patulous, coffee- 

 coloured ; sculptured with radiating very minute 

 concentric striae, posteriorly narrow, anteriorly 

 expanded, dextral margin rather straight ; back 

 obliquely sloped ; apex depressed, posteriorly 

 extra-marginal. 



BouEGUiON'AT. Proc. Zool. Soc. 1853, PI. XX. f. 2()- 

 33. 



Ualj. Venezuela. 



A very oblique, sculptured species, with the sujall 



apex close to the margin and appearing lieymul it. 



