TORNATINA. 197 



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

 a small mouth. Sculpture: Longitudinal 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 dis- 

 tance below is another furrow, after which others succeed, becoming 

 more crowded and slightly stronger on 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 furrow on its inner side. Color 

 translucent glossy-white. Whorls 3i. 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 edge retreats and is sub- 

 emarginate on the base, where it is considerably thickened by the 

 extention of the pillar tooth, which is continued round the front 

 within, the edge of the lip, and separated from the edge by a minute 

 furrow. Top : the shell is slightly contracted, and then sharply 

 and flatly truncate ; round the edge and coiling in to the centre is 

 a sharp, expressed keel ; the whole interval between one keel and 

 the next is occupied by the deep, perpendicular-faced sutural canal, 

 the horizontal top of the whorl, and the extracarinal furrow ; the apex 

 is perfectly flat, and is minute and regularly incoiled. Inner lip: 

 a strongish glassy defined callus runs down the rather cylindrical 

 body, disappears in the extra columellar furrow, and reappears in 

 the extreme edge of the outer lip ; a strong oblique tooth twists 

 round the base of the pillar, is flattened back on the pillar, and is 

 continued in a small intralabral callus on the base; behind the 

 pillar edge is a strongish but shallow furrow, but no umbilical chink. 

 Alt. 0-083 in. diam. 0'042. Mouth, breadth at same place, 0'009 

 inch. ( Wats.'). 



Amboina, 15 to 25 fms. 



Utriculus (Tornatina) amboinensisWATS., J. L. S. L. xvii, p. 330 ; 

 Chall. Hep. Gastr., p. 659, pi. 49, f. 7. 



This species is at first sight and especially in rolled specimens when 

 the sculpture is effaced, deceptively like Utricidus aratms ; it is 

 really, however, quite different, and in particular the difference 

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UNIVERSITY 



