408 REV. E. BOOG WATSON ON THE 



Sculpture. Longitudinals — there are no ribs. The lines of growth 

 are strong, hair-like, unequal, and close-set ; on the keel which 

 marks the line of the old sinuses they are exceptionally strong, 

 prominent, regular, and a little remote, as they also are at the 

 top of the whorls in the suture ; still they are throughout 

 rounded, not sharp. Spirals — the whorls are angulated about the 

 middle, and project in a rather narrow, prominent, rounded 

 keel, which is almost crenulated by the lines of growth. The 

 whole surface is also covered by small, broadish, rounded, close- 

 set spiral threads, which are somewhat granularly tubercled below 

 the keel. On the left side of the point of the snout they tend to 

 become obsolete, as they ^ilso do on the earlier regular whorls. 

 Colour porcellanous white. Epidermis : only one minute frag- 

 ment remains, which seems thin, yellowish, and membranaceous. 

 Spire high, subscalar, typically conical, the profile-lines being very 

 little interrupted by the carinal projection. Apex blunt, rounded, 

 consisting of two smooth globular whorls. Whorls 8, short, 

 broad, of regular increase, the last rather large ; they have a 

 sloping, slightly concave shoulder ; their profile below the keel 

 is straight and scarcely contracted. At the top of each whorl 

 there is a slight collar, which gives the effect of a very slight 

 canaliculation to the suture. The base of the shell is somewhat 

 swollen, and prolonged into the shortish, broad, and very unequal- 

 sided snout, which lies quite on one side of the base. Suture 

 strong and slightly canaliculated. Mouth large, almost rhomboi- 

 dally pear-shaped, sharply angled above, and with a broad open 

 canal below. Outer lip, very regularly curved throughout ; its edge, 

 which is thin and sharp throughout, retreats at once on leaving 

 the body, forming an open V-shaped sinus, which is rounded 

 at the angle ; below this it sweeps downwards and very little 

 forwards, forming a very low-shouldered wing ; towards the lower 

 part of the mouth it curves very regularly backwards to the 

 point of the pillar. Inner lip, which is polished and porcella- 

 nous, is rather broadly excavated in the substance of the shell; 

 it is scarcely convex on the body, very slightly concave at the 

 junction with the pillar, which is narrow and short, being very 

 obliquely truncate in front, with a fine, but strong, sharpish 

 twisted edge. H. 1*26. B. 0*52. Penultimate whorl, height 

 0-23. Mouth, height OG, breadth 0-34. 



I have marked the specimen from Station 169 with a query. It 

 is very much rubbed ; but the sculpture of the shell, and even of 



