﻿S P H ^ R I U M. 



Plate IV. 



Species 31. (Mns. Sowerb}'.) 



Srn.EKIITM CakOI.IXKN'SIS. Sph. ti'xtd suhrnnipresm, 

 altd, roti(wh,-sHh,i,„„lrat,1, fir,,;,-i;,nied; latere 

 antico siihrnhiin/j\ iiinjiislii; I, Urn' postico oblique 

 obtusissi'iiii tninriijn : iiiiinjiii'' vintnd! pauUi con- 

 ve.vo ; umbuiiihus parvis, hand promiiienlibus. 



The Carolina SrHiRiusi. Shell rather compressed, 

 high, snbquadrate, brown-horny ; anterior side 

 rather round, narrow ; posterior side obliquely 

 very obtusely tnincated ; ventral margin a little 

 convex; nmboes small, not jtruminent. 



Dkshayes. Lamarck. N. ed. Anim. saus Vert. 



nab. Carolina, United States. 



Species 32. (Mus. Brit.) 



Sph^rium EHOMiiOiDEUM. Sph. testd subovald, pallkld, 



hcvi. altiiisriild ; latere antko brevinscido, margine 



diiri'dli <li'presso. latrre postico snbe.rpaniio, siih- 



trniicatn ; mnnjirr rriilnii; o-i-ti')sculo ; umhonibns 



Tub KiiOMfioiDAL Si'H:KRiuM. Shell subovate, pale, 

 smooth, rather high ; anterior side rather short, 

 dorsal margin depressed, posterior side a little 

 expanded, slightly truncated ; ventral margin 

 rather straight ; nmboes prominent, acuminated. 



Say. Jonrn. Acad. Nat. Sci. 2. p. 380. 



Ilab. Vermont. 



Species iSo. (Mus. Suwb.) 



SpH^UIUM SECri.'IS. Sjdi. frutil, r^iihqiiiKlnitd, (jrifito- 

 cunied, linn'nid. hrri.jnt.;. nuihouihas prodiicti.<, 

 calyculati.< ; liihrr imlir,' hri ri, ,\riiusculo ; latere 

 postico cuiiral:!, latij Inmralo, uianjine ventrali 

 paulo convi'.iv. 



The hatchet Sph.«rium. Shell subquadrate, grey- 

 horny, tumid, smooth; umboes produced, ealy- 

 culated ; anterior side short, i-ather straight ; 

 posterior side cornered, broadly truncated , 

 ventral margin a little convex. 



Prime. Proc. Zool. Soc. Nat. Hist. Bust. iv. p. IGu. 

 18.51. 



Hah. United States. 



Species 34. (Mus. Brit.) 



Sph.erium distortcm. Sph. testa solidd, obliqud, 

 anticii sulcatd, postice Iceviyatd, corneo-subviridi, 

 latere antico brevi, rotmido, amplo ; latere postico 

 obliqui; producto, anqiisio, post umbones excavate, 

 riiaryine lerminali oblique truncaio. 



The distorted SpiiaiKin.M. Shell solid, oblique, 

 anteriorly grooved, posteriorly smooth, greenish 

 horny, anterior side short, round, ftdl ; posterior 

 side obliquely produced, narrow, excavated 

 behind the umboes, terminal margin obliquely 

 truncated. 



C. B. Adams. 



Mab. America. 



Species 35. (Mus. Brit.) 



Sph.erium Ckeplini. Sph. testd subghbosd, suhrntundd, 



lincis ui(jresceii.tiltis et fasciis albidis concentrice 



riiictd ; latere postico brevi, ad inarrjinem dorsalem 



cimeatti ; latere antico oblique producto, rotimdo, 



ante umbones e.vcavato. 



Creplin's SphjjRIUM. Shell rather globose, rather 



rounded, concentrically belted with dark lines 



and whitish bands ; posterior side short, cornered 



I at the dorsal margin ; anterior side obliquely 



I produced, round, excavated in front of the 



I umboes. 



I DcsKER. Zeit. fiir Malak. 20, 184.!.. 

 Hah. Europe. 



This little rounded shell has a peculiar bend for- 

 ward in the anterior side, with a hollow under the 



Species 3G. (Mus. Brit.) 

 sPH.^RID.M SOLIDCM. Spih. testd subqiiadrutd, solidd 



„l. 



tnmidd, corned, griseo-fasciatd, rcjuhi 

 catd; umbonibus productis, subcciiiratihus, vtar- 

 ijine dorsali iitrinque paalo declioi ; latcribin: 

 ohttisissimv suhtrnnciitis, rnaryiiie veutrali riv- 

 tliisculo. 

 The i^OLID SPH.ERIUM. Shell subquadrate, solid, tumid 



