1901.] MOLLUSKS FROM THE PERSIAK GULF. 425 



Marginella (Gtibberula) eusieormis Hinds. 

 P.G-, Gulf of Oman, Maskat. 15 fathoms. Also lat. 24° 

 5' N., long. 57° 55' E., 205 fathoms. 



Marginella (Gibberula) monilis L. 



P.G. Maskat. 15 fathoms. The var. terveriana Petit has 

 also occuiTed. 



Marginella (Gibberula) mazagonica Melv. 



P.G. Linjah, 3-i- fathoms. Bushire and Kishm Island, 

 7 fathoms, soft mud. Gulf of Oman, Maskat, 15 fathoms. 

 Lat. 24° 5' N., long. 57° 55' E., 205 fathoms. 



M.C. Charbar. 2 to 7 fathoms. 



I. Karachi. Bombay {Ahercromhie). 



Marginella (Gibberula) neyilli Jouss. (=inconsj>icua Nevill, 

 non Sowb.). 



I. Bombay. JN^ot in Abercrombie's collection. 



]\'Iasginella (Gibberula) shoplanbi Melv. 



P.G. M.C. I. Seemingly widely distributed and usually 

 collected alive, the shell then being beautifully transparent. 

 Among loose stones, sand, and mud. It seems placed better as a 

 Gibhenda than in the section Cryiitospira. 



Marginella (Cryptospira) mabbllje, sp. n. (Plate XXIII. 

 fig. 20.) 



M. testa nitida, oblonga, pcdlide straminea, solida ; anfractibus 

 quatuor, suiJernis callositate fere celafis, idtimo obscurissime 

 spiraliter bicincto ; apertura angusta, oblonga, straminea, lahro 

 extus fere recto, alho, nitidissimo, callositate crassa ochracea 

 dorsaliter marginata ; columella alba, late callo tenui nitente 

 coniecta, quadriplicata. 



Long. 16*50, lat. (3 mm. 



ffab. Arabian Sea, off Indian coast, lat. 18° 43' N., 

 long. 71° 43' E. Pound adhering to old telegraph-cable when 

 raised for repair. 



A form distinct from any near ally. We think it more of a 

 Cryptospira than a Prunum, though it might be placed equally well 

 in either subgenus. In form it most recalls the West-Indian 

 M. oblonga Sowb. It is gracefully oblong, very shining, straw- 

 coloured, with white shining callous deposit over the columeliar 

 region and outer lip ; the dorsal margin thick, -with straw-coloured 

 callus ; mouth narrow, columella four times plaited. 



Marginella (Crtptospira) quinqueplicata Lam. 

 M.C. " Eare," without particular locality given. 



Marginella (Persicula) dens Eeeve. 

 I. Angrias Bank {Captain Tindall). 



