360 



On the Geology of Cuich. 



[Oct. 



ous shell, "with only a shallow cavity for the animal. Length 3^ inches, 

 ^idth 2| inches, thickness of tlie shell above an inch and a quarter. 

 Loc. Wage-kd-Pudda. 



Osi7'^a orMcnla?'is. Orbicular, plaited; both valves convex; plaits 

 angular, repeatedly forked ; surface imbricated. Length and width 

 about two inches, resembling O. Flahellulum^ but more regularly and 

 finely striated. See p. 323. 



Loc. Luckput. 



Neritina grandis. Short-conical, smooth ; spire concealed ; aperture 

 very large ; base convex, its margin rounded. Diameter 3 inches, height 

 1^ inch. 



This resembles N. Schmidelliana^ but has a larger aperture in propor- 

 tion and a less excentric apex ; it is also higher. The specimen is little 

 more than a cast, and does not exhibit the edge of the inner lip, but still 

 it shows the attachment of the ligament projecting from the lower sur- 

 face, and that the aperture occupied more than half the base. 



Loc. Wage-ke-pudda. 



Glohulus obtusus. Globose, with a very short spire ; whorls about 6 ; 

 aperture ovate-elongated, pointed above; umbilicus open, narrow. 

 Height 1 inch, diameter the same. 



The short spire of 5 whorls gives this shell a very blunt aspect. 



Loc. Baboa Hill. 



Turhinellus hnlhiformis. Short-fusiform, smooth ; spire pointed ; 

 whorls 6, flattened in the middle ; aperture narrow, pointed at both ends. 

 Height above 7 inches, diameter 5 inches. 



Resembles T. Napus, but has a more elongated spire. 



Loc, Wage-ke-pudda. 



Cyprcea depressa. Obovate, with a blunt spire and a flattened space 

 across the middle of the back. Length 3| inches width 2 inches 7 lines. 

 This being only a cast, we can give but a very imperfect description. 

 Loc. Baboa Hill. 



Nummularia acuta. Depressed, sides conical, decreasing in propor- 

 tional height by age ; when young radiated, when full-grown granulated ; 

 volutions and septa numerous ; edge sharp. Diameter 5 lines, thick- 

 ness 1^ line. 



Distinguished from most other species of Nummularia by the conical 

 form of the sides, 

 Loc. Luckput. 



Nummularia obtusa. Irregularly orbicular, thick, smooth, sides flatten- 

 ed : margin rounded ; volutions and septa very numerous. Diameter of 



