REPORT ON THE GASTEROPODA. 367 



lations formed by the crossing of the bars. Whorls 9 to 10 in all, of regular, but rather 

 rapid increase ; they are at first rather broad, but the penultimate is high and the last 

 rather long and narrow ; they rise in steps one above another, being a little flattened 

 above, are well rounded, and have a slight contraction into the lower suture ; the last is 

 produced into a very lop-sided, long, and somewhat oblique and obliquely truncated 

 snout. Suture is strongly marked by the slight contraction of the whorl above, and a 

 constriction of the shoulder of the whorl below, but is not really deep, for the inferior 

 whorl laps up on that above it. Mouth long, narrow, oblong, sharply pointed above, and 

 produced into an open broadish spout-like canal below. Outer lip forms a regular flat 

 curve to the canal, where it is slightly concave and then straight ; at its junction with 

 the body there is a strongly marked little rounded nick which cuts into the edge, but is 

 bordered by a small encircling pad lying between it and the body- whorl ; this nick is the 

 generic sinus, and the scars of it are marked on all the whorls ; the extreme edge of the 

 lip is thin and sharp, but there is a strongish white porcellanous pad a little way within ; 

 this pad does not extend to the canal, the edge of which at the point is very obliquely cut 

 off from rio-ht to left. Inner lip : as mentioned, there is a small pad above formed by an 

 extension of the outer lip ; this is continued across the body as a porcellanous layer, 

 thinning out and disappearing on the pillar, which is cut off in front with a long obliquity, 

 whose edge is rounded, but hardly twisted. H. - 8 in. B. 0'27. Penultimate whorl, 

 height 0-14. Mouth, height 0-42, breadth 0'13. 



This is a very beautiful species in form and in sculpture. It may perhaps best be compared 

 with Plcurotoma hyalina, Reeve, or with Maiigelia cylindriea, Reeve, or Mangelia gracilis, Reeve, or 

 Mangelia fragilis, Reeve, but is not very much like any of them. Its apex distinctly connects it 

 with the Clathurclla group of which Daphnclla l {fide auctorum nee Hinds) is a subdivision ; and I 

 have accordingly placed it here, though aware that it is not very like some of the species which 

 have been thus named. 



21. Clathurella (Daphnella) aulacoessa, 2 Watson (PI. XXIIL fig. 9). 



Pleurotoma (Daphnella) aulacoessa, Watson, Prelim. Report, pt. 10, Journ. Linn. Soc. Lond., vol. xv. 



p. 472. 



Station 188. September 10, 1874. Lat. 9° 59' S., long. 139° 42' E. West of 

 Cape York, off the south-west point of Papua. 28 fathoms. Green mud. 



Shell. — High, narrow, fusiform, white ; the whorls are convexly cylindrical ; the spire 

 high, narrow, subscalar, and conical ; the body-whorl is long, narrow, and conical, with a 

 broadish snout ; the lip has a thin crimped edge ; the sinus is small, but very well denned 

 at the extreme top of the long narrow mouth. Sculpture : Longitudinals — there are on each 



1 Hinds, who is the author of this genus (see Zool. "Sulphur," p. 25), puts it after Conopleura and before 

 Mangelia, but gives no further indication of its family relations. Its connection with Clathurella is therefore 

 with me more a hope than a conviction. 



2 ubXaxiiig, furrowed. 



