1901.] MOLLUSKS FROM THE PERSIAN GULF. 377 



Cerithiopsis angasi Semper (—daikrata Augas). 

 I. Karachi. Also lat. 18° 58' N., long. 71° 45' E. 

 The type is Australian, but we cannot separate it. 



Cerithiopsis pagodulus A. Ad. 



I. Karachi. Eocks at low tide. Also from Japan. 



Cerithiopsis pulcherrima Melv. 

 I. Bombay (Abercrombie). 



Cehithiopsis rubricincta Melv. 



I. Karachi. Found at low tide amongst loose rocks, mud, and 

 algae. Bombay {Abercrombie). 



Cerithiopsis sykesii Melv. 



I. Karachi. Found with 0. rubricincta. Bombay (Aber- 

 crombie). 



Cerithiopsis (Seila) bandorexsis Melv. 

 M.C. Charbar. 



I. Karachi. Found at low tide amongst rocks and algae. 

 Bombay (Abercrombie). 



Cerithiopsis (Seila) hinduorum Melv. 

 M.C. Charbar. 



I. Karachi, especially near Manora, abundant, varying much 

 in colour from pale to dark brown. (Andaman Isles, Booley.) 



Fam. Planaxidje. 



Plan axis breviculus Desb. 

 Var. tessellata G. Nevill. 

 P.G. (7F. T. Blanford in Gr. Nevill). 



Planaxis lineatus Da Costa. 



Var. labiosus A. Ad. 

 I. Karachi. 



Planaxis niger Quoy ( = P. similis Sm.). 



I. Karachi. Bombay (Abercrombie ; Rev. S. B. Fairbank). 



Planaxis sitlcatus Born. 



P.G. Pushire. Common on rocks at half-tide. 



I. Bombay (Abercrombie ; Olivier). Abundant in similar 

 situations. 



Y;ir. tavignyi I >esb. (sp.). 

 P.G. (W. T. Blanford). 

 M.C. Often found, though locally, on rocks at low tide. 



Var. wtfyMgra d. Nei ill. 

 P.G. (lulf of Oman, Hormuz ami Maakal ( IT. T. Blanford). 



