KENYON : ON TWO NEW CYPEiEID^;. 69 



deeply cut, as where they extend backwards partially over the base 

 the deep cutting forms a pit between each tooth. I do not think this 

 peculiarity is recorded of any other species. The basal margin on the 

 columellar side is convex, whilst the labial side of the margin is 

 flattened and reflected backwards. Length 28, breadth 18, height 

 12 mm. 

 Sab. — Hawaiian Islands. 



2. Trivia acuti-sttlcata, n.sp. Fig. II. 



Shell flesh-coloured, dorsal sulcus deep, reaching to the extremities, 

 each extremity thus showing two points, posterior extremity slightly 

 produced ; high, arched, and globose in shape, ribs regular and evenly 

 distributed, aperture having a semicircular form, resembling the 

 illustration of T. brevissima, Sby. ; outer lip margined. Length 8, 

 breadth 6, height 6 mm. 



The sulcus presents distinct peculiarities, since the ribs are not 

 broken or divided, but depressed into the hollow of the sulcus, which 

 is pitted opposite the interstices. 



Hub. ? 



