408 EEV. E. BOOG WATSON ON THE 



double row at the top of the whorls immediately below the suture ; 

 only in these the under thread is more prominent, and has rounded 

 tubercles, while the upper thread is scored by longitudinally narrow 

 sharpish little bars ; between these infrasutural threads and the 

 carinal threads the slightly concave surface is scored by four finer 

 threads set with little white nodules. Of these, the second thread 

 from above is the strongest, and its nodules are rhomboidal. 

 Below the keel the whole surface is scored by distinct rounded 

 threads, which rise into little nodules where crossed by the stronger 

 lines of growth ; the intervals between these are more than 

 double the width of the threads ; they rather increase in distinct- 

 ness forwards ; two groups of three and then one by itself have 

 finer threads, like shadows, in the intervals below them. Colour 

 porcellanous white, with a buff apex and a faint tinge of suffused 

 buff on the body, especially in the sinus-scar and within the mouth ; 

 the nodules stand out pure white. Spire high and. perfectly 

 conical. Apex 1^ small, rounded, globular, brownish-buff coloured, 

 embryonic whorls, of which the first is a good deal turned up on 

 one side. Whorls 10, slightly keeled and banded, conical, broad, 

 short and of very regular increase ; the last rather large, long, 

 scarcely tumid on the base, gradually produced into a large, 

 conical, rather equal-sided snout, wdiich is obliquely cut off from 

 the point of the pillar backwards towards the outer lip, and which 

 has a slight twist toward the right. Suture slightly canaliculated, 

 from the thickening of the infrasutural collar, behind which it is 

 a little sharply cut in. Mouth long and narrow, sharply angulated 

 above, scarcely contracted below, and with hardly any canal in 

 front ; there is a slight tinge of buff within. Outer lip very 

 sharp and thin and a little contracted, except just toward the 

 end of the canal, where it becomes slightly patulous ; its course 

 is an angulated curve, steep above and long-drawn below. On 

 leaving the body, it retreats very slightly and almost straight to 

 the rather distant, bluntly rounded, large, open, and rectangular 

 sinus ; from this point its edge forms an almost semicircular 

 curve to the point of the shell. Inner lip is hollowed rather 

 deeply into the substance of the shell, which forms a raised edge 

 outside of it ; it is narrow on the body, rather broad on the pillar. 

 The line across the body and down the pillar is very little con- 

 cave. The pillar is long and narrow, running out to a sharp 

 point, Which has a fine, rounded, and slightly twisted edge, but 

 can scarcely be said to be in the least degree obliquely cut oft 1 . 



