364 MESSRS. MELVILL AND STANDEN ON [June 18, 



LlTTOBINA (MELABAPHE) SCABEA L. 



Var. carinifera Menke (sp.). 

 Var. intermedia Phil. (sp.). 

 Var. newcombi Reeve. 

 Var. punctata Phil. 

 Var. pyramidalis G. Nevill. 

 I. Karachi. Bombay (G. Nevill, var. punctata; Rev. S. B. 

 Fairbank, W. T. Blanford, var. intermedia ; S. B. F., "W. T. B., 

 var. carinifera and var. pyramidalis). 

 Intermedia seems the most abundant form. 



Littobina (Melaeaphe) undulata Gray. 

 I. Karachi. 



Tectaeius abmatus Issel. 



P.G. Henjam I. 



M.C. Gwadur (W. T. Blanford in G. Nevill). 



Tectaeius nodulosus Gmel. 



P.G. Gulf of Oman, Jask. Rocks at high-water mark. 

 I. Bombay. Abundant (Abercrombie) (and, under name T. 

 trochoides Gray, F. Stoliczka, G. Nevill, W . T. Blanford). 



Tectaeius geanulaeis Gray (= millegranus Phil.). 

 P.G. Maskat (W. T. Blanford). Gulf of Oman, Jask, with 

 the preceding. 



Lacuna tenuistriata Melv. 

 P.G. Maskat, 7 fathoms. 



Risella (Peasiella) isseli Semper. 



P.G. Gulf of Oman, Maskat ( W. T. Blanford). 



Fam. FossaridjE. 

 Fossaeus bicarinatus A. Ad. (Fossar Adanson). 

 I. Karachi. 



FOSSARUS FENESTRATUS A. Ad. 



P.G. Kais (or Gais) Island. 7 fathoms, coral-sand. Not 

 perhaps quite typical. 



I. Bombay (Abercrombie). 



Fossa rus sulcatus S. Wood. 



Fossarus tomatilis Gould. 



Fossarus stoliczkanus Nevill. 



I. Bombay (Abercrombie, Rev. S. B. Fairbank). 



All these probably forms of one variable species. 



Fossarus trochlearis A. Ad. 



I. Bombay (Stoliczka, W. T. Blanford, G. Nevill, J. Wood- 

 Mason, A. Abercrombie). 



