REPORT OX THE GASTEROPODA. 203 



Mouth rounded above, with a slight angle at the top, and a short open canal below that 

 runs out obliquely across the point of the pillar. Outer Up thin, well rounded, straight 

 and patulous along the canal. Inner Up concave, with a very short direct pillar, which 

 is obliquely cut off and twisted in front; a very thin narrow glaze lies on the body 

 and pillar. H. 1*1 in. B. 0-6. Penultimate whorl, height 0"22. Mouth, height 0'44, 

 breadth 0-33. 



It is very possible this and the preceding may be the same species, and may be ultimately united 

 to Buccinopsis canaliculetta, Dall ; but the differences in form and in epidermis make their separation 

 inevitable till a fuller series of specimens perhaps supply links of connection. 



18. Fusus (Neptunea) scalaris, Watson (PI. XII. fig. 5). 



Ftisus (Sipho) scalaris, Watson, Prelim. Report, pt. 14, Journ. Linn. Soc. Lond., vol. xvi. p. 377. 



Station 305a. January 1, 1876. Lat. 47° 48' 30" S., long. 70° 47' W. North-west 

 Patagonia. 125 fathoms. Blue mud. 



Shell. — Small, thin, porcellanous white, with feeble longitudinals and faint spirals, 

 a high, conical, scalar spire, small mamillary apex, a short, rounded, contracted base, 

 and a small, lop-sided, slightly reverted, emarginate snout. Sculpture: Longitudinals 

 — there are about 15 rounded, slightly tumid ribs, which originate below the upper 

 suture, and hardly reach the lower, and on the base die out ; they are parted by 

 broad, rounded, shallow furrows ; the surface is all scored with sharp unequal lines of 

 growth. Spirals — near the top of the whorls is a blunt angulation ; above this obsoletely, 

 and below it not very strongly, the surface is scored by broad, flatly rounded threads 

 parted by narrow, very slightly depressed furrows ; these threads and furrows do not 

 appear on the snout. Colour porcellanous white. Spire high, conical, and scalar. Apex 

 small, mamillate, with a very small, slightly depressed tip ; it consists of about two 

 smooth, rounded embryonic whorls. Whorls 7, with a high, slightly declining, and 

 rounded shoulder, defined by a blunt angulation, below which the whorls are somewhat 

 cylindrically conical, contracting slightly into the lower whorl. Suture impressed, but 

 rounded and open, the lower whorl lapping up on the upper, and the true suture being 

 linear. Mouth oval, bluntly pointed above, and produced below into the short, open 

 oblique canal. Outer lip a little receding above on the shoulder, bluntly angulated at 

 the keel, below which point it is arched, with a very slight constriction at the short, open, 

 and slightly reverted snout. Inner Up very slightly concave above, straight on the short 

 pillar, and oblique along the canal, where there is a twist on the point of the jjillar ; it is 

 bordered by a narrow thin glaze, which runs out almost to the extreme point of the shell. 

 H. 0-5 in. B. 0*22. Penultimate whorl, height 0'1. Mouth, height 0*23, breadth 0-12. 



