330 REV. B. BOOG WATSON ON THE 



lip almost appressed above, but separated by the sutural canal ; 

 it does not rise quite to the top of tbe shell, it is very slightly 

 arched, and the edge is scarcely curved, and is hardly emarginate 

 in front. Top : the shell is narrowed and then sharply and 

 flatly truncate ; round th.e edge and coiling in to th.e centre is a 

 sharp but not expressed keel ; the whole interval between the 

 keel of one whorl and that of the nest is occupied by the sutural 

 canal, which has a convex slope on the interior side, a rounded 

 bottom, and a perpendicular face on tbe exterior whorl ; the 

 central tip is a (relatively) large, glossy, translucent, flatly rounded 

 prominent dome. Inner lip : there is a very thin glaze across 

 the slightly arched body ; round the base of the straightish 

 concave pillar coils a strongish. tooth, minutely furrowed longitu- 

 dinally, and with a sharp twisted inner edge ; outside the tooth- 

 edge is a strong furrow with a minute umbilical chink. H. 0"088. 

 B. 0'041. B. of mouth at same place 0"011. 



This species very much resembles the following, but may at 

 once be distinguished by the top. 



5. Uteiculus (Toenatina) ambotnensis, n. sp. 



Oct. 6, 1874. Amboyna, 15-25 fms. 



Shell. — Small, oblong, truncated at the top and a little so in 

 front, with whorls sharply and expressedly angulated above, and 

 very faintly spiralled, a channelled suture, a minute regularly in- 

 coiled apex, a shortish, oblique, toothed, and feebly furrowed 

 pillar, and a small mouth. Sculpture. Longitudinals — the lines 

 of growth are barely visible. Spirals — a little way below the 

 middle a minute and very shallow furrow is found ; below this, 

 at about five times the breadth of the furrow, is another similar, 

 then at half the distance below is another furrow, after which 

 others succeed, becoming more crowded and shghtly stronger 

 on to the point of the shell; above there are none of these 

 furrows, only round the top of the whorls runs a sharp keel 

 expressed by a rounded furrow on its outer side and by a deeper 

 and stronger furrov/ on its inner side. Colour translucent 

 glossy white. Whorls 8|. Mouth barely the length of the 

 shell, narrow, straight, small, enlarging quickly, but to no great 

 extent. Outer lip rather thick, almost appressed above, but 

 separated from the body by the sutural canal ; it reaches the 

 top of the shell, but retreats a good deal at this part ; its edge 

 line is curved and it is contracted at the middle, in front the 



