L^DA.— Plate VII. 



TiiK lUiOAD Ljeda. Shell white, compressed, widely 

 ovate, acuminated, finely obliquely striated ; pos- 

 terior side produced, narrow, acuminated, sub- 

 rostrated, marginal area wide, depressed ; anterior 

 side rather short, rather acuminated above ; area 

 wide, ventral margin sloped upwards, anterior 

 stria; larger, posterior strise 



Hinds. Proc. Zool. Soc, 1843. 



Lceda semisidcata. A. Adams. 



Ihib. New Guinea, Borneo. 



.Species 45. (Mus. Brit.) 



L.EDA KO.STRATA. Lccd. tcstd late ovaUi, solidii, alba, 

 Ihieis impressis mimerosis obliquis postice undulatis 

 super rostrum posticum fortioribus sculptd, antice 

 inflatd, latd, postice rostratd, tmncatd, margine 

 dorsali postice depresso ; margine ventrali valde 

 convexo. 



The beaked hMOh. Shell widely ovate, solid, white, 

 sculptured with numerous impressed oblique lines 

 undulated at the back and stronger upon the 

 posterior beak, inflated in front, wide, rostrated 

 and truncated at the back ; dorsal margin pos- 

 teriorly depressed ; ventral margin very convex. 



Montague. Test. Britt. Sup., .55, pi. 27., f. 7. 

 Nucida Montagui. Gray. 

 Nuatla curvii-ostrum. Humphreys. 

 Xiirula recurva. Conrad. 

 ILib. Guinea, Liberia. 



Species 46. (Mus. Brit.) 



L.EDA CiiuvA. Lced. tcstd laid, albd, subcompressd, 

 arcuatd, concentrice liratd ; latere antico subinfiato, 

 lata, margine dorsali elevato ; latere postieo valdf- 

 arcuato, acuminata, margine dorsali (/eyMv^vo, ail 

 terminum elevato, margine ventrali svrsum acclivi, 

 costd rostrali arcuatd, liratd, ared dorsali ivnpla- 

 natd, dejinitd. 



The Ciiuva L/EDA. Shell wide, white, subcompressed, 

 arched, concentrically ridged, anterior side a little 

 inflated, wide, dorsal margin elevated ; posterior 

 side much arched, acuminated, dorsal margin 

 depressed, elevated at the end, ventral margin 

 sloped upwards, rostral rib arched ridged, 

 dorsal area flattened, defined. 



Gi;ay. Voyage of the Fli/. JIarine Shells, pi. 2, f. C. 



Hab. Moreton Bay, Australia. 



