CULTELLUS. 



Species 15. (Fig. a, b, Mus. Sowerby.) 



Ci'i.ri:i,i.us Jai'ONICUS. Cul. lestd tenui, ocatil, pallid!: 

 sidi/u.<rd, purpurea radidtd et concentricc fasciatit, 

 uitus costd albd validd infrd umboneiii in utrdque ' 

 ralrd munitd ; latere antico bi-eviitsculo ; latere \ 

 postico magis producto, prop! maryinem dorsalem 

 (■(jiupresffO, sulcata ; marrjine ventrcdi convcxo, vix 

 medio contracto. 



Till; J.\i'.\N- CuLTELLi's. SlicU thin, i>v;ite. pale 

 liroAviiisli, rayed and concentrically liandcd with 

 purple, strengthened -within by a strong white rib 

 under the umbo in each valve ; anterior side 

 rather short ; posterior side more produced, com- 

 pressed near the dorsal margin, with a groove ; 

 ventral margin convex, hardly contracted in the 

 middle. 



DiSKEii. Proc. Zool. Soc, 18G1. 



Siliqiia pulclier, Dunker. 



I/ab. Eastern seas. 



The specimens of Mr. Dunkor's Siliqita pulcher, seem 

 to me to represent the young state of his i'. Japonica. 

 It is longer in form, but it has the same groove con- 

 current with the dorsal marsin. 



Species 17. (Mus. Brit.) 



Cui.TEM.i's GuAV.VNUs. Cul. tcstd tCHui, clonQatd, epider- 

 midr tenuissimo indutd, costd intits munitd, vbscuir 

 purpurea radiatd; latere antica hrevi ; latere 

 pasiiro pnxhicta, margiiie dorsaii elevato, com- 

 presso. 



Quay's Cultellu.s. Shell thin, elongated, covered with 

 a very thin epidermis, strengthened with a rili 

 inside, rayed with dull purple, anterior side short; 

 posterior side produced, dorsal margin elevated, 

 compressed. 



DuNicEi:. Proc. Zool. Soc, 1801. 



Hub. Coylon. 



?pecii 



IC. (Mus. Brit.) 



CuLTELLUS ALBiDUS. Cul. tcstd parrd, subelliplicd, albd, 

 semipellucidd ; latere antica hrevi; latere postico 

 oblonfjo, margine dorsaii convexo ; margine vcntrali 

 medio vix contracto. 



The whitish Cultellus. Shell small, subelliptic, 

 white, semipellucid ; anterior side short ; posterior : 

 side oblong, dorsal margin convex ; ventral ! 

 margin scarcely contracted. 



DUNKEI! ? 



Hab. Catauuan, Philippines. | 



Species 18. (Mus. Brit.) 



Cultellus suesulcatus. Cul. tcstd ellipticd, tenui, 

 obscurh inirimreo fasciatd ; intiis costd solidd 

 munitd; latere antico brevi, rotunda ; latere postico 

 ohliquo, elongato, pirope margiucm dorsalem lev e 

 sulcata ; margine ventrali convexo. 



The SLiGHTLY-onoovED Cultellus. Shell elliptic, 

 thin, banded with dull purple ; strengthened 

 within by a solid rib ; anterior side short, 

 rounded ; posterior side oblique, elongated, 

 slightly grooved near tlie dorsal margin ; ventral 

 margin convex. 



Soweuisv. 



Hah. ? 



This shell is named in the British Museum collection 

 S. cosiatusvdv., but it is unlike the larger representatives 

 of that species. It has the same peculiar groove-like 

 depression parallel with the dorsal margin that dis- 

 tinguishes C. Japonica, but it is much more inequi- 

 lateral. 



