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



angle of the mouth to the point of the pillar. Than either Eulima bilineata, Alder, or Eulima 

 gracilis, Forb., the mouth is much smaller, and the shell is much more attenuated and drawn out 

 on the base. 



9. Eulima oxytata, 1 Watson (PI. XXXV. fig. 7). 



Eulima oxytata, Watson, Prelim. Eeport, pt. 17, Journ. Linn. Soc. Lond., vol. xvii. p. 117, sp. 7. 



Station 212. January 30, 1875. Lat. 6° 54' N., long. 122° 18' E. Off Malanipa, 

 Basilan Strait, Philippines. 10 to 20 fathoms. Sand. 



Shell. — High and narrow, slightly bent, very thin and transparent, with a very fine 

 linear suture fallaciously marginated and little oblique flat-sided whorls, a very round 

 base, a short round mouth, and an excessively sharp point. Sculpture none, but occasional 

 microscopic lines of growth. Colour horny translucent to transparent white. Apex 

 excessively small, attenuated and sharp, acuminately rounded and almost symmetrical. 

 Spire very high and narrow, not quite straight, there being more or less of a bend near 

 the tip. Whorls 17, very short, perfectly flat-sided ; the last is short, very slightly 

 tumid, with a very gentle and regularly curving base. Suture very little oblique, linear, 

 scarcely visible on the surface, and having the appearance of being remotely marginated 

 in consequence of the septum of the whorls shining through the thin shell. Mouth pear- 

 shaped in the young shell; it is somewhat irregularly semicircular in the adult form. 

 Outer lip very regularly arched except toward the lower outer corner, where there is a 

 blunt angulation ; the edge is shallowly and broadly sinuated above, prominent in the 

 middle, and then it retreats to the shallow, open, unequal-sided gutter in front. Inner lip 

 very flat on the body ; there is a very slight angulation at the junction of body and pillar, 

 which last is oblique, very short and very narrow, with a patulous but not reverted edge. 

 H. 0-3 in. B. 0-07. Penultimate whorl, height 0'04. Tip of apex, breadth O'OOl to 0*002. 

 Mouth, height 0'05, breadth 0'04. 



This very beautiful form is especially remarkable for the extreme sharpness of its apex, which is 

 not so much as half the breadth of Eulima pliilippii, Wein. It is slightly like Eulima attenuata, Sow., 

 but is much slimmer, thinner in texture, more brilliant, and has a shorter and rounder mouth. Than 

 Eulima acicula, Gd., it is very much smaller and slimmer. Than Eulima rutila, Carp., it is much 

 slimmer, and the apex in particular is very much sharper. 



10. Eulima acanthyllis, 2 Watson (PI. XXXV. fig. 8). 



Eulima acanthyllis, Watson, Prelim. Report, pt. 17, Journ. Linn. Soc. Lond., vol. xvii. p. 118, sp. 8. 



July 1875. Reef off Honolulu, Sandwich Islands. 40 fathoms. 



Shell. — Very small, very slightly bent, transparent, with a very fine somewhat oblique 

 suture, flat-sided whorls, a straight oblique shortish base, a pear-shaped flat-ended mouth, 

 1 oijuraroj, excessively sharp. 2 axaviuX>.is, a small prickle 



