1901.] MOLLUSiCS FROM THE I1BSUB GULF. 411 



acutiearinatis, catena ad tututxu inqircsso-caaaliculatis, grada- 

 tulis. undique longitudiruUiter multicostafis (coftu in ultimo 

 circa 24), infra, juxta sutwas, spiraliter incrcusatia, deindt 

 undique regulariter t&mriliratis, ultimo ant ractu usque ad ba$i)yi 

 hrato ; aperturafert rotunda, labro muUum incrassato, intus 6- 

 S-denticulato ; columella nitiJa, alba. 

 Long. 11, lat. 5 mm, 



Bab. Gulf of Oman, lat. 24°55' X., long. 57° 59' E. 37 fathoms, 



sand and mud. 



The particular sounding, as given above, was prolific in results : 

 this neat addition to the genus Nassa being noteworthy. It, 

 perbaps, recalls tbe specie-* described by Messrs. G. & H. Nevill as 

 JW.obesa, from Kutch. but is not half the size, and the cancellation 

 is much finer aud more uniform. The protocouch is interesting. 



Nassa (Alectryox) muceoxata A. Ad. 



I. Karachi. 3 to 7 fathoms, gravel and muddy sand. Bombay, 

 common (Abtrcroinbie). 



Nassa (Alectryox) >~odifera Poms. 



I. Bombay {Abercrombie ; Olivier). Perhaps only a subspecies 

 of N. hirta Kien. 



Nassa (Alectryox) obesa G. & H. Nevill. 

 I. Kutch. 



Nassa (Zeuxis) filosa Gray. 



M.G. At low tide, both on sand, and in crevices of rocks. 

 I. Karachi. Bombay {Abercrombie). 



Nassa (Zeuxis) lextigixosa A. Ad. 



I. Bombay, rare (Abercrombie). 



Tryon unites this, Jilosa, picta, and others with N. gaudiosa 

 Hinds, but, in our opinion, he has been too sweeping and drastic 

 in many ot bis conclusions. The first two variaties occur also at 

 Bombay. 



Nassa (Zeuxis) marrati Smith. 



M.C. Charbar. On sandy mud at low tide just under the 

 surface, at the water's edge. 



Nassa (Zeuxis) pallldula A. Ad. 



!'.<;. Gulf of Oman, Malcolm Inlet. 55 fathoms on cable. 

 1. Karachi. 



\ UB&A (Zi.i wis) PICTA Dkr. 

 Var. marmorea A. Ad. 

 P.G. On the telegraph-cable at l'5 Eathoms. 



N \s.- \ ( Zi.i \i- ; pi \XlCOBJ I i I \. Ail. 



I. Karachi. <)m .soft mud-flats at low tide. Is also (unnamed) 

 in Mr. A.bercrombie'i Bombay series. 



