GUDE : ON NEW SPECIES OF CHLORITIS. 233 



umbilicus. Aperture ovate-lunate, oblique, margins convergent ; 

 peristome thin, whitish, slightly reflexed, margins evenly rounded, 

 columellar triangularly dilated and slightly overhanging the umbilicus. 

 Diam. maj. 18, min. 15-5 mm. ; alt, 12 mm. 



Hah. — Australia. 



Type in Dr. Cox's collection. In shape it resembles C. mucida, but 

 it is smaller and has a slightly narrower umbilicus, while the aperture 

 is less dilated transversely. No trace of hair-scars can be detected, 

 although the periostracum is quite fresh. 



Chlokitis ^tnaensis, n.sp. PI. XXI, Figs. 11, a-d. 



Shell imperforate, depressed conoid, dull, dark corneous, very finely 

 and regularly striated, covered with very minute and crowded short 

 bristles. Spire much depressed, apex low, suture rather shallow. 

 Whorls 4, increasing regularly, the last rather suddenly, the earlier 

 ones a little convex, the last compressed above, obtusely angulated 

 above the periphery, compressed below, becoming inflated towards 

 the mouth and slightly constricted behind the peristome, obtusely 

 angulated round the very small umbilical depression. Aperture 

 subelliptic, little oblique, margins approaching, united by a thin 

 callus ; peristome whitish, becoming fulvous at the edge, a little 

 thickened, expanded and reflexed ; upper margin ascending at first, 

 then slightly curved, outer rounded, basal nearly straight, columellar 

 obliquely ascending, triangularly dilated and reflexed, entirely 

 covering the umbilicus. Diam. maj. 13, min. 11 mm. ; alt. 8 mm. 



Hab. — Etna Bay, Dutch New Guinea. 



Type in Mr. Ponsonby's collection. C. ^tnaensis differs from 

 C. teUtecta in the completely covered umbilicus, the more depressed 

 spire, and in having the aperture more contracted laterally. From 

 C. eurychasma it may be distinguished by its smaller size, the com 

 pressed whorls, the supra-peripheral angulation, the less oblique and 

 more contracted aperture ; the last whorl is also more dilated and 

 constricted, and descends less in front ; the columellar margin is less 

 dilated, and the bristles are finer and more crowded. 



VOL. VII. — MARCH, 1907. 



