514 THE VOYAGE OF H.M.S. CHALLENGER 



out straight on the flat and narrowly expanded pillar. H. 016 in. B. 0'04. Penultimate 

 whorl, height 0-02. Tip of apex, breadth - 003. Mouth, height 0*05, breadth 0-025. 



Compared to Eidima, intermedia, Cantr., this is a much slimmer form, with a longer more 

 attenuated base, more curved profiles, and a much sharper apex. Than Eidima oxytata, Wats., it is 

 slimmer, the profile-lines are not quite so straight nor the individual whorls so flat, the suture is more 

 oblique, the mouth does not project laterally, the base is smaller and longer, and the apex is not so 

 minute nor so symmetrical. 



12. Eulima sarissa, Watson (PI. XXXVI. fig. 2). 



Eidima sarissa, Watson, Prelim. Report, pt. 17, Journ. Linn. Soc. Lond., vol. xvii. p. 119, sp. 10 



Station 122. September 10, 1873. Lat. 9° 5' S., long. 34° 50' W. Off Pernambuco. 

 350 fathoms. Red mud. 



Shell. — Straight, high and narrow, rather dull, with a scarcely perceptible suture, very 

 slightly rounded whorls, a short stumpy base, roundish mouth lying very much in the line 

 of the axis, and with a very small symmetrical tip. Sculpture : there are coarsish 

 microscopic lines of growth. Colour dullish white, but the shell is dead. Apex very 

 small and symmetrically rounded. Spire narrow, straight, nearly symmetrical, but with 

 slightly undulating profile-lines ; most marked as usual near the apex, the last two whorls 

 of which have a slight but marked contraction. Whorls 11, scarce perceptibly rounded. 

 Suture extremely slight, and only a little oblique. Mouth short, broad, and rounded, 

 pointed above, and with a broad shallow patulous gutter in front. Outer lip well and 

 regularly arched ; it is patulous in front, but direct above ; there its edge retreats very 

 much ; it advances in the middle, and retires again toward the base. Inner lip : across 

 the scarcely convex body there is a glaze with a well-defined edge ; the junction of body 

 and pillar is obtuse-angled ; the pillar is short, with a rounded patulous edge. H. 0T6 in. 

 B. 0-05. Penultimate whorl, height 0-02. Tip of apex, breadth 0-003. Mouth, height 

 0-04, breadth 0'03. 



This species has not the sharp impressed suture, perfectly flat-sided whorls, and high polish of 

 Eulima intermedia, Cantr. ; is straighter and more symmetrical, the shell is thinner, the base is 

 narrower and longer, the mouth is larger, the suture is more oblique, the apex is small but more 

 equally rounded, not rising on one side as in that other. It is a good deal like a large form of 

 Eulima jejfreysiana, Brusina, but is slimmer, the whorls are not so rounded, the mouth is very much 

 shorter and rounder, and though the apex is about the same size and form, yet the whole spire is 

 markedly more attenuated. Eulima acerrima, Wats., is sUmmer, longer in the base, narrower in the 

 mouth, and smaller in the tip. Eulima oxytata, Wats., besides other differences, has a far more 

 attenuated spire and minute tip. Eulima ephamilla, Wats., is a species with larger whorls and an 

 impressed suture ; but its greater size, the absence of young specimens, and its somewhat damaged 

 tip make minute comparison difficult. 



