424 MESSRS. MELYILL AND STANDEX OX [June 18, 



Mitra (Pusia) multicostata Swains. 



P.G. Shaikh Shuaib I. 10 fathoms, amongst live coral, sandy 

 bottom. 



Mitra (Pusia) osiridiis Lssel (=untbonata Sowb.). 



P.G. Kais Island, 10 fathoms, coral-sand. In the Gulf of 

 Oman an almost smooth variety occurs. Maskat, 20 fathoms. 

 Also at lat. 20 55' N., long. 57° 59' E., 37 fathoms, sand and 

 mud. 



Mitra (Pusia) shoplaxdi Melv. 



P.G. Gulf of ( >man, Malcolm Inlet. 24 fathoms. Described 

 from Commander IShopland's Aden examples. 



Mite a (Pusia) yexustula Eve. 



P.G. Tumb Island. Shaikh Shuaib Island. 7-10 fathom-, 

 coral-sand. Peculiarly large and dark wine-coloured. 



Mitra (Swaixsoxia) fissurata Lam. 



P.G. Gulf of Oman, Maskat. Xot yet dredged alive. 



Mitra (Cylixdra) xux Sowb. 



P.G. Shaikh Shuaib I., 14 fathoms, amongst broken coral and 

 shingle. Kais Island, same kind of ground. A very rare species 

 everywhere. 



Earn. Harpid.e. 



Harpa coxoidalis Lam. 

 I. Bombay (Herford). 



Harpa textricosa Lam. 



P.G. Gulf of Oman, Jask beach, one dead specimen only. 



Fam. Margixellid.e. 



Margixella (Glabeela) faba L. 



P.G. Gulf of Oman, lat. 24 c 50' X., long. 57 c 59' E. 

 37 fathoms, sand and mud. 



Margixelea (Glabella) obtv/sa Sowb. 



P.G. Gulf of Oman, Maskat. 10-20 fathoms, black mud 

 mixed with sand. 



[_M. (Glabella) quilonica Melv. was collected by Captain W. A. 

 Tindall south of our limit, at Quilon, Malabar coast.] 



Margixella (Gibberl'la) charbarexsis Melv. 



P.G. Gulf of Omnn : Jask ; Maskat, 3 to 5 fathoms, muddy 

 sand. Lat. 24 c 55' X., long. 57° 59' E., 37 fathoms, and up to 

 150 fathoms in other parts of the Gulf. In deep water it R8snmes 

 a still more elegant and graceful form. Always smaller in all its 

 parts than monilis, with more or less conspicuous spire. 



