262 Mr. E. A. Smith on Mollusca from the 



The muscular scars and pallial line are the same as in 

 V. cretacea. There is a slight indication of the sulcus 

 beneath the ligament mentioned as occurring in that species, 

 and in the left valve there is an elevated ridge below it which 

 might ahnost be regarded as a tooth. The dorsal escutcheon 

 is both broader and deeper than in V. cretacea. 



V. indica, Smith, has the anterior end more produced and 

 more narrowed, the posterior end more sharply curved and 

 not so distinctly angulated at its junction with the dorsal 

 outline. The escutcheon in the present species, which may 

 be only a variety of indica, is broader and deeper. 



Cardium exasperatum, Sowerby. 



Cardium exasper-atum, Sowerby; Reeve, Conch. Icon. vol. ii. fig. 107; 

 Romer, Concb.-Cab. p. 27, pi. ix. figs. 2, 3. 



Hub. Off Port Blair, Andaman Islands, 100 fath. {' Inves- 

 tigator^) ; Swan Kiver [Sowerby); Hong Kong [Garrett). 



Cardium fornicatum, Sowerby. 



Cardium fornicatum, Sowerby ; Reeve, Concb. Icon. vol. ii. pi. xx. 

 fig. 110. 



Hab. Andaman Islands, 60 fath. 

 Also known from the Red Sea. 



Corbida crassa, Hinds. 



Corbula crnssn, Hinds ; Reeve, Concb. Icon. vol. ii. figs. 8 a~c ; Smith, 

 Lamellibrancbiata ' Challenger ' Exped. p. 30. 



Hab. Off Port Blair, Andaman Islands, 100 fath. 

 Also known from Torres Straits, Port Essington, Straits of 

 Macassar, and the Philippine Islands. 



Corbula persica, sp. n. 



Testa parva, valde insequivalvis, paulum inoequilateralis, subtrian- 

 gularis, postice truncata, alba, ad apices flavesccus ; valva dextra 

 transversim fortiter ct coiifcrtim costulata, sinistra concentrice 

 tenuiter striata, cpidermide fibrosa propo marginem induta, lirisquo 

 paucis radiautibus instructa ; umboucs lawigati, flavcsceus. 



Longit. 7 mm., alt. 6, diam. 4*5. 



Hab. Station 346, Persian Gulf, 4-7 fath. 

 This species in sizp, form, ami sculpture is rather like 

 C. Philippii, Smith ■^, a West Indian species. The young 



* Lamellibrancbiata ' Challenger' Expcd. p. 33. pi. vii. figs. 4-4 ft. 



