846 MESSRS. MELVlLIi AXD STANDEN ON [Nov. 13, 



among the larger species of the geniis. It is so fragile, however, 

 as not to bear much handling, aiicl this may in some measure 

 account for its having been so long unnoticed and undescribed. 

 Only single valves have hitherto been met with. We hope soon 

 to see some dredged and perfect specimens. It only occurs after 

 storms, which would imply that it is a deep-water shell, and 

 probably lives iii thick nnid. 



Fam. Pandorid.e. 



Paxdora ceylanica Sowb. 

 P.G. Gulf of Oman, Jask. 



Pandora cumingi Hanley. 



P.G. Shaikh Shuaib I. 10 fathoms, mud and sand. 



Pandora flexuosa Sowb. 



P.G. & M.C. Dredged commonly at fi'om 5-10 fathoms, 

 ,sand. 



I. Karachi. At tlie same depth. 



Bombay (Abercrombie). Disconnected valves very abundant in 

 shell-shingle. 



Pandora nasuta Sowb. 



P.G. Gulf of Oman, Ja,sk. 

 M.O. Widely distributed. 

 I. Karachi. 



Fam. Yerticordiid.e. 



Verticordia deshayesiana Fischer. 



P.G. Gulf of Oman. Lat. 24° 58' N., long. 56° 54' E. ; 

 159 fathoms, shell-sand. 



One half -valve, extracted by Mr. E. R. Sykes, seems to be the 

 young of this species, after a close comparison. The ribs ai-e 

 thick and beautifully scaly-imbricate, however, the form being 

 practically the same. 



Verticordia multicostata A. Ad. 



P.G. Gulf of Oman. Lat. 24° 58' N., long. 56° 54' E. ; 

 156 fathoms, shell-sand. 



Several specimens, identified with a little doubt ; indeed, it may 

 be an Tuidescribed, nearly allied foi-m. Adams's type came from 

 Japan. 



Verticordia sp. 



P.G. Gulf of Oman. Lat. 25° 10' JS^., long. 60° 34' E. ; 

 40 fathoms. 



Very likely an undescribed form. 



