10 Gr. and H. Nevill — Descriptions of new Mollusca. [No. 1, 



also a third closely allied species before me from the neighbourhood 

 of Bombay, this differs, however, materially from the two former 

 by its more produced and sub-angulate anterior end and by the 

 more central position of the umbones &c, it is smaller than either 

 of the preceding forms. A fourth Indian species in my collection 

 from the Himalayas is very distinct from any of the above, it 

 will probably prove to be P. paludosum, Hutt. (Journ. As. Soc. 

 Bengal, xviii, p. 649). 



Cryptogramma Arakana, n. sp., PI. I. Pig. 16, 16a. 



T. oblonga, subventricosa, alba, maculis castaneis pervariabile 

 sparsim nammulata ; lunula angusta, attenuata, parte anteriore 

 fusca ; umbonibus prominentibus, paululum antice positis ; latere 

 postico angustato, oblique truncato, ad extremitatem rotundate ob- 

 tuso, antico rotundato ; superficie valvarum costulis concentricis et 

 radiantibus ornata, primis in parte media, alteris antice et postice 

 multo fortioribus et squamulosis. 



Length 14, breadth from the umbones 13£, thickness 9 m.m. 



Dredged alive by Mr. H. F. Blanford in Arakan, to whom we 

 are indebted for specimens ; single valves are abundant on the sands 

 in the S. Province, Ceylon ; it was also found by Dr. Stoliczka at 

 Penang and Singapore, being extremely common at both localities. 

 The sculpture of this handsome little shell is very peculiar, in the 

 centre it is strongly latticed with close set ribs, which form, where 

 they cross one another, large, nearly round granules ; at the extreme 

 anterior side, there are no decussating ribs, but the transverse ones 

 are continued by 4 or 5 rows of broken up, rugose granules ; the 

 posterior side, beginning at about one-third of the breadth of the 

 shell, has somewhat similar rows of granules, somewhat distant, 

 the granules themselves being, for the first 7 or 8 rows, erect and 

 foliaceous, almost spoon-shaped. 



Cypricakdia spathulata, Souv. PI. 1, Pig. 20. 



Jour, de Conch, pi. ix, f. 2. 



A specimen of this interesting species was found by Dr. J. 

 Anderson at the Andamans, and presented by him to the Indian 

 Museum at Calcutta ; it was buried in a slate- colored rock in 



