DESCEIPTIONS OF NEW LAISD SHELLS — HEDLEY. 47 



Flammulina abdita, n. sp. 

 (PI. xi., figs. 10, 11, 12.) 

 Shell very small, thin, translucent, moderately umbilicated, and 

 depressed. Colour raw umber, paler on the earlier whorls and 

 purplish on the apex. Whorls three and a half, rather rapidly in- 

 creasing, rounded, channelled at the suture and slightly descending 

 at the aperture. Sculpture, — the whorls are crossed at irregular 

 intervals by numerous lamellate ribs, rising on the periphery into 

 thin recurved plates but obselete on the last quarter whorl ; between 

 and parallel to these ribs are fine raised hair-lines, which are cut 

 by close, fine, faint, irregular spiral incised lines. At a whorl and 

 a lialf the limit of the embyronic shell is sharply indicated by the 

 commencement of the above described sculpture, the earliest 

 whorls being smooth except for close, fine, incised, spiral lines ; 

 on the apex is a small pit. Umbilicus about a quarter of the 

 shell's diameter, exposing the earlier whorls. Aperture ovate 

 lunate, slightly oblique ; peristome sharp, straight, except where 

 reflected on the columella margin, no visible callus on the inner 

 side. Major diameter, 1"0; minor, 1-3; height '8 mm. 



Type. — Queensland Museum. 



ITab. — Collected by Mr. A. Giulianetti, in October, 1896, at a 

 height of 12,200 feet on Mount Scratchley, British New Guinea. 



This species possesses close aflSnities to the wide-spread Aus- 

 tralian (H.J jmradoxa, Cox, from which the novelty difiers by its 

 less developed ribs, less elevated spire, wider umbilicus, and 

 smaller size. Pilsbry's figure of ^ndodonta acanthinula, Crosse, 

 suggests to me that that New Caledonian species should be 

 grouped herewith. The few whorls and the aspect of the em- 

 bryonic shell induce me to place this Papuan atom in Flammulina 

 rather than in Endodonta, but with our present imperfect know- 

 ledge of these groups such classification can only be considered 

 provisional. 



SiTALA 1 SUBLIMIS, U. Sp. 

 (Plate xi., fig. 4, 5, 6.) 



Shell small, thin, translucent, depressedly turbinate, narrowly 

 perforate. Colour tawny olive. Whorls three and a half, gradually 

 increasing in diameter, rounded. Suture impressed. Sculpture, — 

 the otherwise smooth shell is everywhere crossed by extremely 

 fine, close, transverse hair-lines, more prominent above, almost 

 effaced beneath. Umbilicus extremely narrow, elliptical, exposing 

 only the previous whorl. Aperture roundly lunate, not descend- 

 ing, oblique ; lip sharp, straight, except a slight reflection at the 

 columella ; callus on body whorl thin, deposited in transverse 

 streaks, Major diameter, 24; minor, 2; height, 1'5 mm. 



Type. — Queensland Museum. 



