C U L TELL U S. 



Species -I. (Mus. Brit.) 



t'ui.Tixi.fs I'KLi.rciDus. Cul.lifhi pwcA, femii, semi- 

 pellncidd, clonrjaMl, arcuat'i, ante umbonem hrevis- 

 simd ; area posticd paulo elevatd ; maiyine dorsali 

 vix arcuato: marijine ventrali ulrinqne sursum 

 acdivi ; manjimhiis tcrminalilus .ndirotnudis. 



TiiK PtLLUciD Cfi,TELi,i:s. Shell small, thin, semi- 

 pellucid, elongated, arched, very short in front of 

 the umbo, posterior area a little raised; dorsal 

 margin scarcely arched, ventral margin sloped 

 upwards on each side ; terminal margins rathoi- 

 roimded. 



Pennant. Zool. Brit., vol. iv. PI. 4C, 1'. "23. 



Solen pyjmwiis, Lamarck. 



Solen minntus, Montagu. 



ITnh. British coasts. 



Species 5. (Mus. 



CULTELLUS HaNLETI. CuL tCSld doiKjatd, COJliprCSlld, 



utrinqu'c paulo hianti, rectliisciild. albidd, aiitirr 

 postid'qne concentrice rufjatd ; latere antico brcvi, 

 margine dorsali exravato, narijine terminuli sub- 

 quadrato ; latere postico clongato, margine dorsali 

 recto, area angnstissimd, margine terminnli subro- 

 tiindo. 



Hanley's Cultellus. Shell elongated, compressed, 

 a little gaping at each end, rather straight, whitish, 

 anteriorly and posteriorly concentrically wrinkled ; 

 anterior side short, dorsal margin excavated, 

 terminal margin rather square ; posterior side 

 elongated, dorsal margin straiglit, with very 

 narrow area, terminal margin rather rounded. 



DuNKER. Proc. Zool. Soc, 1861. 



Hab. ? 



Described in the Proceedings of the Zoological Society 

 from a specimen in the late Mr. Cuming's collection 

 without stated locality. 



Species (J. (:Mu.s. Brit.) 



(.'ui.ti;li.i;s i'olitl'S. CuL tedd recta, drpressd, antice 

 hianti, fused, epidermidc teniii, politd indutd ; 

 twibonibiis stibtermiKalibits, margine antico elevaio, 

 rejle.co; ared postird albd, eloiigatd, margine terminalt 

 sithtruncato '; area dorsali iDigiistd, rectd ; margine 

 ventrali recto. 



The polished (^ultellus. Shell straight, depressed, 

 anteriorly gaping, brown, covered with a thin 

 polished epidermis ; uraboes nearly terminal, 

 anterior margin elevated, reflected, posterior area 

 white, elongated ; terminal margin Eubtruncated ; 

 dorsal area narrow, straight, ventral margin 

 straight. 



DuNKKi;. Proc. Zoul. Soc, ISGl. 



/lab. Mouths (jf the river Gambia. 



A pecidiarly straight looking species, with umboes 

 lu arly torminal and edges curiously reflected. 



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

 Cui.TELLUS Cu.MiNuiANUS. C'ul. testd kitiUsculd, breviils- 

 vuld, arcuatd, fusco-piirpured, sparsim superne 

 punctato et macvlato ; umbonibtis terminalibus, 

 margine antico oblique retrorso ; margine ventrali 

 ntrinqui: acclivi ; margine postico obtvso ; margine 

 dorsidi suharcuatim dipresso. 



I Cu.ming's Cui.TELLUS. Shell rather broad, short, 

 arched, purple-bro\vn, sparingly dotted and 

 spotted with purple above ; umboes terminal, 



I anterior margin obliquely turned backwards ; 



! ventral margin sloped upwards at each end; 



posterior margin obtuse ; dorsal margin a little 



I arched and depressed. 



I DuNKEi:. Proc. Zool. Soc, 18G1. 



I Cultelliis concin:.us, Dunker. 

 Ilab. Isl. Zebu, Philippines. 



Short, deep, and square at the ends. 



June, 1874. 



