1901.] MOLLUSKS TEOM THE PBUSIAN GULT". 411 



acuticarinatis, c<rteris ad suturas im/presso-canalieulatis, grada- 

 tulis, iindique longitudinaliter multicostatis (costis in ultimo 

 circa 24), infra, juxta suturas, spiraliter incrassatis, deinde 

 undique regulariter tenuiliratis, ultimo anfractu usque ad basim 

 lirato ; apertura fere rotunda, labro multum incrassato, intus 6- 

 8-dentmdato ; columella nitida, alba. 

 Long. 11, lat. 5 mm. 



Hab. G-ulf of Oman, lat. 24°55' N., long. 57° 59' E. 37 fathoms, 

 sand and mud. 



The particular sounding, as given above, was pi'olific in results : 

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

 perhaps, recalls the species described by Messrs. G. & H. Nevill as 

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

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



Nassa (Alectrton) muceonata A. Ad. 



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

 common (Abercrombie). 



Nassa (Alectbton) kodipeba Powis. 



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

 of N. liirta Kien. 



Nassa (ALECTEToisr) obesa Gr. & H. Nevill. 

 I. Kutch. 



Nassa (Zeuxis) eilosa Gray. 



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

 I. Karachi, Bombay {Abercrombie). 



Nassa (Zeuxis) lentiginosa A. Ad. 



I. Bombay, rare (Abercrombie). 



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

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

 in many of his conclusions. The first two variaties occur also at 

 Bombay. 



Nassa (Zeuxis) mabbati Smith. 



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

 surface, at the water's edge. 



Nassa (Zeuxis) pallidula A. Ad. 



P.G. Gulf of Oman, Malcolm Inlet. 55 fathoms on cable. 

 I. Karachi. 



Nassa (Zeuxis) picta Dkr. 

 Var. marmorea A. Ad. 

 P.G. On the telegraph-cable at 25 fathoms. 



Nassa (Zeuxis) planicostata A. Ad. 



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

 in Mr. Abercrombie's Bombay series. 



