510 THE VOYAGE OF H.M.S. CHALLENGER. 



6. Eulima chaskanon, 1 Watson (PI. XXXV. fig. 4). 



Eulima chaslcanon,^ "atson, Prelim. Report, pt. 17, Journ. Linn. Soc. Lond., vol. xvii. p. 114, sp. 4. 



Station 24. March 25, 1873. Lat. 18° 38' 30' N., long. 65° 5' 30" W. Off Culebra 

 Island, West Indies. 390 fathoms. Pteropod ooze. 



Shell. — High, narrow, and pliant in its lines, with a scarce visible oblique suture, short 

 flat-sided whorls, a rounded constricted base, a very large and most patulous mouth, and 

 a small rounded but slightly flattened and unequally sided tip. Sculpture: there are 

 some microscopic soft lines of growth, which are only visible in exceptionally good light. 

 Colour translucent white. Apex small, slightly compressed laterally, a little unequally 

 sided, and rounded yet faintly flattened down on the tip. Spire high, narrow, and slightly 

 flexuous. WJiorls 13, not quite flat on the side ; they are short and narrow, and of very 

 slow increase ; the base is a little elongated and very slightly rounded. Suture linear, 

 but just perceptibly impressed ; it is very distinct near the top of the spire. Mouth large 

 and very open, pointedly ovate. Outer lip very slightly arched and patulous ; on the 

 edge it is deeply sinuated above, prominent in the middle, and retreats very little to 

 the base, where it is extraordinarily expanded into a spoon-edged shallow canal. Inner 

 lip : a very thin glaze with a most faintly defined edge extends across the body ; the pillar- 

 edge is narrow, rounded, expanded, with a very minute furrow behind it. H. 0"32 in. 

 B. 0-08. Penultimate whorl, height 0"04. Tip of apex, breadth 0-004. Mouth, height 

 0-1, breadth 0-05. 



This species in many respects resembles in form Eulima gracilis, Forb., the large variety of 

 Eulima philippii, Wein. ; but has a larger apex, a coarser suture, a more contracted, less tumid, and 

 much more one-sided base, and a totally different mouth. Than Eulima intermedia, Cantr., it is much 

 more attenuated. 



7. Eulima hians, Watson (PI. XXXV. fig. 5). 



Eulima Mans, "Watson, Prelim. Report, pt. 17, Journ. Linn. Soc. Lond., vol. xvii. p. 115, sp. 5.1 



Station 24. March 25, 1873. Lat. 18° 38' 30" N., long. 65° 5' 30" W. Off Culebra 

 Island, West Indies. 390 fathoms. Pteropod ooze. 



Shell. — Largish, somewhat broad, with a coarsish linear suture, short flat-sided whorls, a 

 rounded somewhat constricted base, a large patulous mouth, and a small apex. Sculpture : 

 there are feeble microscopic lines of growth ; along either side, not quite regularly, nor 

 correspondingly nor uninterruptedly, are scores which mark an old mouth-edge on the 

 succeeding whorls. Colour dirty white (but the specimen is a dead shell). Apex small, 

 contracting rather suddenly, and in the middle the extreme tip rises into view. Spire 



1 ya.tsxa.vot, a mask with a gaping mouth. 



