340 EEV. E. BOOG WATSON OH" THE 



15. Utriculus simillimus *, n. sp. 



Sept. 7, 1874. Torres Straits, North of Australia. 3-11 fms. 

 Sept. 8, 1874. Minders Passage, Cape York, North Australia. 

 7 fms. 



St. 186. Sept. 8, 1874. Lat. 10° 30' S., long. 142° 18' E. 

 Wednesday Island, Cape York, North Australia. 8 fms. Coral- 

 sand. 



Shell. — Small, short, truncately conical, with straightish out- 

 lines, a perforated crown, and a small papillary apex, rounded and 

 tumid in front. SculpUire. Longitudinals — the lines of growth 

 are very slight ; but round the top of the shell is a coronal of 

 delicate folds forming ridges and furrows of about equal strength ; 

 these extend over the top and into the perforation of the crown. 

 Spirals — round the top is a slight but marked constriction ; above 

 this the top converges, and is finely scored with small close-set 

 furrows ; the rest of the shell is superficially scratched with 

 delicate, sharp-cut, fretted, remote furrows parted by flat surfaces : 

 on the base the furrows are closer and coarser, and the intervals 

 rounded. Colour translucent white. Mouth the entire length of 

 the shell, being considerably produced posteriorly, where it is 

 enlarged ; in the middle it is narrow and slightly bent, in front 

 it is large and oval. Whorls 3 to 4 ; the apex is papillary, 

 but very small, and so deeply immersed as to be doubtfully 

 visible. Suture very diflicult to distinguish, but apparently 

 impressed. Outer lip rises from the inner side of the perforation 

 and bends in over it, so as partially to cover it : it arches freely 

 round and is not at all emarginate ; for about three fifths of 

 its length it runs pretty straight forward, at this point it is 

 slightly constricted, and contracted, but immediately bends to the 

 right and curves very regularly round the base, where it is 

 patulous. Top contracted, rounded, oblique, harshly radiatingly 

 striate, and deeply narrowly impressed. Inner lip convex, tumid 

 in front, oblique and slightly concave on the pillar, which is 

 feebly toothed, and has a very narrow, scarcely patulous, promi- 

 ne"nt edge, with a minute furrow behind it. L. 0-1. B. 0*047. 

 B. of mouth at same place, 0*024. 



This species greatly resembles the young of Z7, famelicus, 

 Wats., but is very much broader in proportion to its length. 

 Cylichnafijiensis, E. Sm., is much larger and slimmer. 



* So called from its resemblance to the young of U. famelicus, Wats. 



