1906.] MOLLUSKS FROM THE PERSIAN GULF. 837 



Ohoristodon lapicidum (Chemn.). 



P.G. Gais (or Kais) Island; sand, 10 fathoms. Koweit, 

 1 5 fathoms. Gulf of Oman : Maskat ; coral-rock and sand, 7 fathoms. 

 Also reported from Aden (Shopland). 



Fam. Glaucomyid.e. 



Glaucomva cerea Reeve. {Glcmconome Ciray.) 

 i. Boml)ay, in brackish water {Abercrombie). 



Suborder T>. CARDIAOEA. 



Cardium australe Sowb. ( =pu.lchrum Rve.). 



P.G. Gulf of Oman, Maskat. 5-10 fathoms, sandy mud near 

 rocks. With the type occasionally occurs the variety C. temdcos- 

 iaticin Lamk. (sp.). 



Cardium (Tracjiycardium) assimile Rve. 



P.G. Exact h>cality not recorded. 

 I. Karachi {Major Baker). 



Cardium (Trachycardium) elongatum Brug. 



P.G. Not nncommon at 10 fathoms, in sandy mud. 



Cardium (Trachycardium) impolitum Sowb. 

 I. Karachi {Major Baker). 



Cardium (Trachycardium) lacunosum Rve. 

 P.G. Gulf of Ouian, Maskat. 10-15 fathoms; in both juvenile 

 anl aduh condition. A very widely distributed species. 



Cardium (Trachycardium) maculosum Wood. 



PG Gulf of Oman. Near Maskat at 10 fathoms, sand. 

 Also lixt. 26" 50' N., long. 54^ 50' E., and lat. 25° 23' N., long. 

 58° 36' E. ; 40 fathoms. 



Cardium (Trachycardium) rubicundum Reeve. 

 P.G. Dredged at 3-10 fathoms, sandy mud. 

 No precise locality given. 



Cardium (Trachycardium) rugosum Lamk. {=flavum L. in pt.). 



P.G. Rarely. 



I. Between Bombay and Ratnagiri(A'. H. Aitken.). " Much 

 eaten, and the shells burnt to make lime for ' Supari ' " {-E. H. .4.). 



Cardium (Trachycardium) vertebratum Jonas. 

 P.G. Dabai, 8-10 fathoms. 



