9 o 



posterior slope concave. Apex compressed, with one whorl at the right side, placed at about 

 4 / 5 of the total length. Colour yellowish- white; sculpture consisting of about 44 radiating ribs, 

 and a few intermediate ones at irregular intervals, and one or two very fine, radiating threads 

 in each interstice, the whole shell is crossed by fine concentric ridges, forming on the ribs 

 conspicuous compressed scales. Slit-fasciole rather large, elevated, forming a strong rib or keel 

 on the front slope, with close-set, strong, curved lamellae. Margin crenulated by the ribs, raised 

 at the sides, the shell resting on its ends; slit long 2 s / 4 , broad 3 / 5 Mill., its margin slightly 

 thickened, a strong groove runs towards the deeply pitted apex. Interior white, smooth, apparently 

 cancellated, in consequence of the transparency of the shell. 



Long. g% lat. 6 1 /,, alt. 3 Mill. 



Resembling in shape Emarginula harmilensis Sturany (Exp. S. M. Schiff "Pola" in das 

 Rothe Meer, Gastropoden, p. 27 (235) pi. V, fig. 12) but differing in colour, that species being 

 variegated by spots, lines and points of a brownish to greenish colour, the apex is placed still 

 nearer to the posterior end, and the ribs are not scaled, but only beaded. 



4. Emarginula curvaia n. sp. PI. VII, fig. 8. 



Stat. 95. 5°43'.5 N., U9°4o'E. 522 M. Stony bottom. 1 Spec. 



Stat. 105. 6°8'N., 121 19' E. 275 M. Coralbottom. 1 Spec. 



Stat. 164. i°42'.5 S., I30°47'.5 E. 32 M. Sand, small stones and shells. 1 Spec. 



Shell very elongated, oval, capuliform, front slope very convex, side slopes moderately 

 convex, posterior slope very short, nearly straight, excavated below the apex, which if seen 

 from above, surpasses the posterior margin. Colour white (brownish in two small specimens). 

 Sculpture consisting of about 46 rather strong, radiating ribs, a weaker one in most of the 

 interstices and very fine intermediate ones ; they are crossed by comparatively strong, concentric 

 ridges, forming short, solid scales on the ribs. Slit-fasciole moderately large and deep, crossed 

 by close-set lamellae. Margin conspicuously crenulated by the ribs, raised at the sides, slit 

 long 4, large nearly l J i Mill., its margin thickened interiorly, a large, depressed rib runs 

 towards the deeply pitted apex. Interior smooth, white, the external sculpture visible through 

 the shell. 



Length of base 9 3 / 4 , of shell with apex io 1 /,, lat. ó 1 /^ alt. 5 1 /, Mill. 



Allied to E. galericulata Ads. (Proc. Zool. Soc. 1851, p. 84) but according to the figures 

 of Reeve (Conch. Ie. Emarginula sp. 15) and of Pilsbry (Man. of Conch. Vol. XII, pi. 28, fig. 20) 

 which is a copy of the original figure in the Thesaurus Conchyliorum, this species is much 

 larger, the apex is more curved and its distance from the basal margin is consequently smaller; 

 the rather short descriptiun gives no conspicuous differences, the character of Adams: "front rib 

 granulate-punctate above the slit" however, does not correspond to the specimens. I think the 

 specimens from Stat. 105 and 164 may be young ones of this species, though their colour is 

 brownish, as I can detect no difference in sculpture or shape of any importance, which may 

 not depend on age. If however more materials proved these differences to be constant, they 

 will form two species. 



90 



