1901.] MOLLUSKS FROM THE PERSIAl!f GULF. 381 



on the Mekran 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. Jayakar's specimens in 

 Mus. Brit. 



Steombus (CoNOMUfiEx) MAURiTiANus Lam. 

 P.Gr. In 6 fathoms, sandy mud. 



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

 ci/Undricus Swains. 



/3. conlformis Sowb. 

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



Ptebooera lambis L. 



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

 I. Bombay {Ahercrombie). 



EOSTELLAEIA CUEVIROSTRIS Lam. 



Var. curta Sowb. (sp.). 



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

 Pusni. Dead specimens not infrequent generally over the whole 

 area. 



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

 in possession. 



EosTELLARiA DBLiOATULA Gr. Nevill, Journ. Asiatic Soc. Beng. 

 1881, p. 262. 



P.G. 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 Arakan, in the Bay of Bengal, this species is 

 probably common in deep water throughout the North-Indian 

 Ocean. 



With reference to the di'edging 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- 

 ture, of about 62° Fahr. 



Seraphs terbbelldm Montf. 



Terebellum subulatum Klein. 



P.G. Gulf of Oman, Maskat. 9-20 fathoms, on muddy sand. 



