OPEAS, EAST INDIES. 175 



p. 159. Stenogyra d., MARTS., Ostas. Zool. p. 374; Pfr., 

 Nomenclator Hel. Viv. p. 320 (but by error "8. densestriata 

 Mss." in index, p. 596). Acicula fusiformis Hasselt, on un- 

 published plate 14, fig. 2, according to von Martens. 



"Similar to arctispira, but with the same number of 

 whorls it is larger, with fine spiral strise, the last whorl one- 

 third the total length" (Marts.). 



* 



73. O. ARCTISPIRA (Martens). PL 19, fig. 25. 



Shell rimate, conic-turrite, lightly striatulate, eostulate at 

 the suture, rather glossy, apex somewhat acute. Whorls 8, 

 gradually increasing, obese, a little convex, parted by a mod- 

 erately impressed suture, the last whorl slightly larger than 

 the penultimate, rounded, somewhat flattened basally. Aper- 

 ture nearly vertical, rhombic-ovate, small, less than a third the 

 total length; columellar margin perpendicular, reflexed 

 above, tapering towards the base, not truncate. Length 7, 

 diam. 3, aperture 1x1.5 mm. (v. Marts.) 



Java: Anjer, on Sunda Strait (Marts.) ; Buitenzorg 

 (Zollinger). 



Stenogyra arctispira MARTS., Ostas. Zool., ii, p. 374, pi. 22, 

 f. 10 (1867). Bulimus arctispirus Marts., PFR. Monogr. vi, 

 p. 102. 



"Distinguished from all Indian species known to me by 

 the slow increase of the whorls, which are always much wider 

 than high. In this feature it finds a parallel only in the 

 somewhat larger American Stenogyra caraccasensis." 



74. 0. KEMENSE (Sarasin). PI. 19, fig. 27. 



Shell conic, turrite, obese, obtuse above, very narrowly 

 umbilicate, thin and glossy. Whorls 6y 2 , lightly convex, 

 rather rapidly increasing, separated by a deeply cut suture, 

 the last whorl ventricose, fully half the shell's length, and 

 about double that of the penult whorl. Aperture vertical, 

 narrowly pirif orm ; peristome acute, the ends connected by a 

 thin callus in some specimens, the columellar margin vertical 

 and thickened, slightly twisted, reflexed. Sculpture a very 

 fine arcuate striation. Color white with a yellowish tone. 

 Length 8, diam. 4 mm.; length 7.75, diam. 3.75 mm. 



