38 



MARSHALL : NEW BRITISH MARINE SHELLS. 



and as I have indicated the precise locality for it, no doubt more 

 will be found hereafter. 



Odostomia oblongula, n. sp. 

 Shell forming a long oval, with an obtuse apex and produced 

 base, thin, semi-transparent, glossy ; sculpture, microscopic only, 

 and consisting of longitudinal flexuous lines of growth ; colour, 

 clear white, opaque in dead specimens ; spire very short ; apex 

 apparently truncated, the nucleus being obliquely depressed and 

 intorted : whorls three only besides the nuclear ones, compressed 

 but not flattened, the last occupying two-thirds of the shell 

 viewed with the mouth downwards ; the upper part of each 

 whorl shows the usual thickened rim of the genus ; suture 

 shallow but clearly defined, and nearly straight ; mouth pear- 

 shaped, narrow and acute-angled above, slightly expanded below, 

 its length being not quite half that of the shell ; outer lip thin, 

 not projecting beyond the periphery ; inner lip not uniting with 

 the outer, slightly reflected below and on the pillar, which is 

 nearly straight ; umbilicus none, but a slight groove runs behind 

 the pillar ; tooth very minute and retired. Length, o'l ; 

 breadth, 0-04. Six specimens. 



Figure 3^ Odoitomia cV.cngula, n. sp. (enlarged). Ths Minch. 



Var. ovata, n. var. --Considerably expanded, egg-shaped, 

 and umbilicate. Two specimens. 



Habitat— The Minch, 72 fathoms, with Euhina ephaniilla. 



