﻿SPIL^RIUM.— Plate IV. 



horny, banded with grey, regularly grooved ; 

 nmboes produced, nearly central, dorsal margin 

 slightly sloped on both sides ; sides very ob- 

 tusely truncated, ventral margin rather straight. 



NoRHAND. Nat. Cycl. Yalenc. 6, f. 34. 



Hah. France. 



Prime. Proc. Zool. Soc. 1860, 322. 

 Hah. Mexico. 



Species 37. (Mus. Brit.) 



Sph^rium Nov^-Zelandi^. Sph. testa parvd, semi- 

 pellucidd, compressd, corned, yriseo-fasciaid, Iwvi, 

 suhquculratd, antice rotunda, postlce obtusii trun- 

 catd, umhonibus sulceiitrallhus. 



The New Zealand Sph^eium. Shell small, semi- 

 pellucid, compressed, horny, banded with giey, 

 smooth, rather square, anteriorly rounded, 

 posteriorly obtusely truncated ; umboes nearly 

 central. 



Deshayes. Proc. Zool. Soc. 18.54, p. 342. 



Hi'ti. New Zealand and New Holland. 



Species 38. (Mus. Brit.) 



Sphseium subteansversum. Sph. testa kijalind, com- 

 pressd, pallide stramined, versus apicem corned ; 

 la.iri-e anticji subaeumiuato ; latere jjosHco lata, 

 si'hi'.qian^o ; margine dorsali recta, iiianjiiie 

 Jalrrali ahllqne truncato. 



The subtransverse Sphj:eium. Shell hyaline, com- 

 pressed, pale straw, fleshy towards the apex ; 

 anterior side rather acuminated ; posterior side 

 broad, slightly expanded ; dorsal margin 

 straight, lateral margin obliquely truncated. 



Species 39. (Mus. Brit.) 



SPH.SEI0M SOLIDULUM. Spli. testd ovato-suUrigond, 

 solidd, rugatd, rugis versus apicem magis dis- 

 tantihus ; latere antieo breviusculo, declivi ; latere 

 postico oblique truncato, prope inargijiem ventralem 

 prcdiicto, subacicminafo, margine dorsali declivi. 



The solid small Sph-ERIDM. Shell ovate-subtrigonal, 

 solid, wrinkled, wrinkles more distant towards 

 the apex ; anterior side rather short, sloped, 

 posterior side obliquely truncated, produced 

 near the venti-al margin, slightly acuminated, 

 dorsal margin sloped. 



Prime. Proc. Soc. Nat. Hist. Bost. iv. 1.58, 1852. 



Hah. North America. 



Species 40. (Mus. Brit.) 



SpHiiEiDM PUNCTIFERUM. Spli. testd parvd, compressd, 

 oblique subrotundd, semipellucidd, pallidissimd, 

 umbonibus antice inclinatis, acutis ; margine 

 dorsali utrinque recto; margine postico-ventrali 

 suiproducto. 



The PUNCTURED Sphj;rium. Shell small, compressed, 

 a little obliquely rounded, semipellucid, very 

 pale, umboes leaning anteriorly, sharp, dorsal 

 margin straight on each side ; postero- ventral 

 margin slightly produced. 



Gltppy ? MS. Mus. Brit. 



Hah. Trinidad. 



