114 NEW UNIONID^, MELANID^, ETC., 



Ojjerculum calcareous, thick and solid, subconcentric, with the polar poiijt on the 



edge half way up. 



Proc. Acad. Nat. Sci. 1854, p. 110. 



Bob.— S'mm, S. R. House, M. D., per W. A. Haines. 



My cabinet and cabinet of Mr. Haines. 



Diam. 2-36, # Length 2-46 inches. 



RemarTcs. — Three specimens are before me, only one of which is adult; the other 

 two are quite young. This species is remarkably flat on the top, the spire being but 

 slightly exerted. It is nearest perhaps to Celebemis, Quoy, but is wider in proportion 

 to that species and more turbinate. It is also more banded. 



AmPULLAEIA TUB^FORillS. PI. 22, fig. 3. 



Testa elongato-globosa, tenebroso-fusca, transversim vittata, tenui, pellucida, late umbilicata, Isevi ; spira 

 emersa; suturis valde profundis; anfractibus instar quinis, valde convexis; apertura magna, subro- 

 tunda, dilatata, luteo-albida, intus brunneo-vittata; umbilico magno ; columella subcallosa. 



Shell elongately globose, dark brown, transversely banded, thin, pellucid, widely 

 umbilicate, smooth ; spire raised; sutures very deep ; whorls about five, very convex ; 

 aperture large, rounded, dilate, yellowish white, with brown bands within ; umbilicus 

 very large ; columella somewhat callous. 



Proc. Acad. Nat. Sci. 1856, p. 110. 



.Ha&.— India, M. Burrough, M. D. 



My cabinet. 

 Diam. 1-05, Length 1-32 inches. 



RemarJcs. — A single specimen, which came with many other shells from India, 

 collected by that indefatigable collector the late Dr. Burrough. It is remarkably 

 large in the aperture and is in outline nearest to ovata, Caill., from Egypt, but may 

 easily be distinguished by its larger aperture, its being thinner and in having a wider 

 umbilicus. 



Ampullaeia aurostoma. pi. 22, fig. 4. 



Testa subglobosa, lutea, transversim vittata, crassa, arete perforata, L-Evi ; spira obtusa; suturis vix pro 

 fundis ; anfractibus instar senis, convexis ; apertura rotundo-elliptica, subreflexa, intus aurantea et 

 • obsolete vittata ; umbilico arete oompresso ; columella crassa. 



Shell subglobose, yellowish, transversely banded, thick, narrowly perforated, 

 smooth ; spire obtuse, sutures scarcely deep ; whorls about six, convex ; aperture sub- 

 elliptical, somewhat reflexed, golden and obscurely banded within ; umbilicus nar- 

 rowly compressed ; columella thick. 



