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DESCRIPTION OF A NEW SPECIES OF BATISSA FKOM THE 

 FIJI ISLANDS. 



By H. B. Preston, F.Z.S. 



Bead 8th May, 1908. 



Batissa Fijiensis, n.sp. 



Shell irregularly subtrigonal, high, somewhat compressed, smooth, 

 covered with an olive-green periostracum, and marked with concentric 

 lines of growth ; anterior side slightly produced ; posterior side short, 

 descending rather rapidly ; ligament large, prominent ; interior of 

 shell posteriorly pale violet, fading to bluish white anteriorly and 

 towards the umbonal region ; umbones deeply eroded. Length 60, 

 width 62*5 mm. 



Sah. — Fiji Islands. 



Allied to Batissa producta, Desh., but more trigonal in shape and 

 smoother in texture ; the dorsal margin is also more inflated on the 

 anterior side. 



