254 REV. R. B. WATSON ON THE 



level-fronted, slightly detached (in the full-grown shell) from the 

 body, and leaving behind it a small distinct funnel-shaped 

 umbilicus.— H. 0-17. B. 0-07. 



This species very much resembles S. Fischeri, but is distinct. 

 It is a larger form, the spire is in proportion broader, the whorls 

 are rounder and less depressed ; the apical whorls are 3 not 4, 

 they are smaller and the way in which they are set on the top of 

 the spire is peculiar ; the spiral threads are sparser, flatter, 

 finer, and more rounded, and at the periphery somewhat fainter ; 

 the longitudinal ribs are fewer and sparser ; the minute tooth on 

 these, when present, occurs lower on the whorl (that is, nearer 

 the periphery), while in S. Fischeri it comes very near the 

 suture ; the base of the embryonic apex is much smaller. I have 

 named the species after Mr. E. A. Smith, of the British Museum, 

 whom often, and always profitably, I have had occasion to 

 consult. Specimens, several in number, were mixed up with 

 shells of S. Fischeri I had got from Funchal and Punta de Sao 

 Lourenco and also from Porto Santo, Madeira. 



Gen. Aclis, Lov. 



21. Aclis yitrea, n. sp. 



Shell thin, hyaline, glossy, tall and narrow. Sculpture : 

 there are very faint unequal lines of growth ; a very feeble spiral 

 angulation is sometimes traceable round the base of the whorl. 

 Colour glossy, transparent white. Spire high, with very regular 

 narrow outline and a bluntish rounded half-immersed tip. Whorls 

 7 ; their curve is a very regular flattened arch. Suture shallow, 

 oblique. Mouth a full round oval, small. Outer lip thin, 

 prominent, but toward the body it is drawn back almost into a 

 sinus, somewhat expanding on the base. Inner lip thin, sharp, 

 and patulous; its connection across the base with the outer lip 

 is long and very filmy. Umbilicus a small funnel-shaped shallow 

 depression.— L. 0'08. B. 0*029. 



This species is a good deal like A. Walleri, Jeffr., but is much 

 smaller, with 7 instead of 3 to 11 whorls; the spire is much 

 broader, the tip much larger and coarser in proportion to size, 

 the whorls are longer, more regularly rounded, much less ex- 

 panded round the axis, and the contour of each is more com 

 pressed, the suture is more oblique, the mouth smaller, lip open 

 rounder. 



This species is abundant in deep water from Funchal to Punta 



