Indian Deep-sea Dredging. 17 



prolonged deprivation of water in the Fig- 3. 



moist atmosphere of ship-board. 



The type appears to have been 

 described from an abnormally thin 

 and varicose shell, which also, judg- 

 ing from the slight development of 

 the digitate processes of the outer 

 margin of the aperture, was probably 

 young. The thinness of the type 

 specimen is perhaps to be explained 

 by its having come from a greater 

 depth, our present series showing 

 that the thickness of the shell varies 

 inversely as the depth. 



Family Phoridse. 

 4. Xenophora pallidula (Reeve). 



A tolerably perfect dead shell was taken off the west coast 

 of the Andamans in 240 to 220 fathoms (Station 56). It 

 may be mentioned that Prof. Wood-Mason dredged a dead 

 and weathered specimen of this shell in the Andaman Sea at 

 228 fathoms, at the same time with the type of the Ho mar id 

 genus Nephropsis) and that in 1887 Commander Carpenter 

 dredged a fine series of living specimens in 290 to 240 fathom 3 

 very near the position of Station 56. 



Family Capulidae. 



5. Amalthea, sp. 



Some small specimens, symbiotic with RosteUaria deli- 

 catula, were taken in 98-102 fathoms (Station 95). 



Family Calyptraeidse. 

 6. Crepidula, sp. 



At Station 105 in the Laccadive Sea, at 740 fathoms, a 

 single specimen was obtained of a curious form which we 

 doubtfully refer to this genus. 



The shell is broadly and not quite regularly oval, depressed, 

 thin, translucent, and covered with a delicate olive-green 



Ann. & Mag. N. Hist. Ser. 6. Vol. vii. 2 



