1901.] MOLLUSKS FROM THE PERSIAN GULF. 381 



on the Mekrau Coast were almost plain. Commdr. E. E. Shopland 

 has likewise received it recently from Aden, in some variety. 



Our two figures are taken from Dr. Jayakars specimens in 

 Mus. Brit. 



Strombus (Coxomurex) mauritianus Lam. 

 P.G. In 6 fathoms, sandy mud. 



M.C. In 3 to 10 fathoms, and on coral-beds. Mostly var. 

 cylindrieus Swains. 



/3. coniformis Sowb. 

 P.G. This noduled form in fine condition, with the type. 



Pterocera lambis L. 



P.G-. Gulf of Oman, Maskat. On rocks at low tide. 

 I. Bombay (Abercrombie). 



Bostellaria curvirostris Lam. 

 Var. curia Sowb. (sp.). 



M.C. One live example dredged at 7 fathoms, in mud, off 

 Pusni. Dead specimens not infrequent generally over the whole 

 area. 



I. Bombay (Abercrombie). Mostly found with a Pagurus sp. 

 in possession. 



Bostellaria delicatula G-. jNTevill, Journ. Asiatic Soc. Beug. 

 1881, p. 262. 



P.O. Gulf of Oman : lat. 24° 49' N., long. 55° 56' E. 225 

 fathoms, mud ; all young. In the vicinity of the above sounding 

 occurred about six fine, well-grown examples, from 200-400 fathoms. 

 Originally noted from Arakau, in the Bay of Bengal, this species is 

 probably common in deep water throughout the North-Indian 

 Ocean. 



With reference to the dredging of this species, Mr. Townsend 

 (in litt.) gives some interesting remarks as to the temperatures 

 taken of the sea-bottom at various depths in the Gulf of Oman : — 



At 205 fathoms 62° Fahr. 



230 „ 



61° 



415 „ 



52° 



425 „ 



53° 



500 



51° 



1495 „ 



37° 



adding that the Rostellaria was always found at an even tempera- 

 tare, of about 62° Fahr. 



Ski; \i-iis TEBBBXLLUld .Montf. 



Tli: ■';■ H a i,i siiliuliiln in \\ li-iii. 



l'.(i. Gulf of Oman, .Maskat. 9-20 fathoms, on muddy sand. 



