376 MESSES. MELVILL AND STAND EN ON [June 18, 



PoTAMiDES (Pieenella) conicus Blainv. 



Var. cinerascens Pallas. 

 P.G., occasional. Originally described from the Island of Karak 

 in the Grulf. 



PoTAMiDES (Pieenella) lataedi A. Ad. 



Var. bombayanus Sowb. (sp.). 

 I. Bombay. Both the type and the variety recorded. 



Potamides (Ceeithidea) ehizopeeaeum a. Ad. 

 I. Bombay. On mangrove-roots. 



Teifoeis acutus Kien. 

 M.C. Charbar. 

 I. Karachi. 

 Most abundant and variable in coloration. 



Teieoeis cingulatus a. Ad. 



P.G. Bushire. Gulf of Oman, Maskat, 10 fathoms. On 

 muddy rocks from low-water to 50 fathoms. Also (in the Gulf) 

 amongst shell-growth on the telegraph-cable. 



Teieoeis coeeugatus Hinds. 

 P.G. Gulf of Oman, Maskat. 

 I. Karachi. 



Teieoeis idoneus ', sp. n. (Plate XXII. fig. 17.) 

 T. testa angustefusiformi,solida, calcareo-alba ; anfractibus forsan 

 quatuordecim, quorum apicales . . . ?, cceteris (undecini) omnino 

 regulariter spiraliter triseriatis, cancellatis, sutaraliter impressis, 

 ad juncturas noduUfero-gemmatis, nodulis regularibus, rectis, 

 ultimo anfractu serie quarta prcedito ; apertura ovata ; columella 

 crassa ; canali brevi, paullulum recurvo. 

 Long. 10, lat. 2*50 mm. 

 Hob. Linjah Anchorage, 5 fathoms. 



This Triforis, distinguished by its uniform chalky M'hiteness and 

 regular rows of gemmuled cancellations, coarse, uniform, three- 

 ranked on all the upper whorls, four on the body-whorl, is of a 

 graceful shape and fairly sized. It is unfortunate that all the 

 specimens we have examined are without the apical whorls. 



Teieoeis peeveesus L. 



P.G. Bushire. 



I. Bombay {Abercrombie). 



"We cannot distinguish the Bushire and Bombay specimens from 

 the Mediterranean shell. The Triforides (especially acutus) are 

 amongst the most plentiful small mollusca dredged at a few fathoms' 

 depth. 



^ Idoneus, suitable. 



