1901.] MOLLUSKS EROM THE PERSIAN GULF. 409 



BlTLLIA (PSEUDOSTROMBUS) YITTATA L. 



M.C. Charbar Point. 



Nassa arciilaria L. 



P.G. Gulf of Oman, Maskat. 



M.C. Generally distributed on the coast of Baluchistan at from 

 10-20 fathoms, mostly muddy sand-bottom. 



Nassa coroxata L. 



P.G. Gidf of Oman : Malcolm Inlet (Kubbatt Ghazira). 25 

 fathoms, muddy sand. 



Nassa pulla L. 



P.G. On Cable, 24 fathoms, muddy sand-bottom. 

 M.C. Charbar Point, at low tide. 

 I. Karachi. 



NaSSA (ArCULARIA) LEPTOSPIRA A. Ad. 



I. Karachi. 3 to 7 fathoms, on hard sandy mud. 



Nassa (Arctjlaria) obockensis Jouss. (=zailensis Sowb.). 

 P.G. Shaikh Shuaib Island. Linjah, 3| fathoms. 



I. Karachi. 

 This species has been found to extend to the Andamans (Booley). 



Nassa (Arcularia) persica y. Mart. 



P.G. and M.C. From half-tide to low-water mark ou every 

 variety of bottom. 



Nassa (Arcularia) thersites Brug. 

 Var. bimaculosa A. Ad. 



P.G. Galig Island. 



I. Bombay, and Katnagiri (Abercrombie), the typical form 

 only. 



Nassa (Alectryon) babtlonica 8. Wats. 



P.G. Gulf of Oman : lat. 24° 55' N., long. 57° 59' E. ; 37 

 fathoms, sand and mud. Also lat. 25° 14' N., long. 59° 45' E. ; 

 80 fathoms. 



I. Karachi. Rare at 7 fathoms. Lat. 18° 58' N., long. 71° 

 45' E. ; 40 fathoms. 



N lm I ( A i.i.i Tit vox) c.elata A. Ad. 



1. Karachi. '■> lat hums, loose stones and muddy sand. 



Nam \ i A i.ixtryon) collaticia ', sp. n. (Plate XXIII. fig. 10.) 

 IS . tetta medioori, ovata vel oblongo-ovata,solida, alba, mbnittmU} 

 anfractibut x . quorum apicak t tn b tubpt llucidi t la iw, ad tin dium 

 tub l, ni. delicate tpiraUter umiearinati^ eceterii turritit, infra 

 tuturat tpiraliter unipUcatUi ad eotUu nodulotie, in t>j[>o cas- 

 taneo-tinctis, undiqiM longitudinaliU r ol>r«/>i>- pauoioottatu t costis 



1 rollaticiun, gregariom. 



