BY C. IIEDLEY. 385 



Otopoma macgregori^, n.sp. 

 (Pis. xxiv. and xxv., figs. 5, 7, 20.) 



Shell globosely conical, openly urabilicate, thin, translucent. 

 Colour pale straw with a brown band which, peripheral on the 

 last whorl, becomes sutural above ; beneath this band are a few 

 narrow indistinct brown lines, and the space above it is obscurely 

 mottled with brown. This pattern is visibl e from within. Whorls 

 5, rounded and rapidly enlarging. Spire small, well exserted. 

 Suture impressed. Epidermis thick, like felt to the touch, under 

 the lens closely beset with tiny bristles, arranged quincunx. 

 Umbilicus broad, deep and spiral. Aperture oblique, subcircular, 

 angled posteriorly. Peristome sharp, straight, at the left anterior 

 side broadly expanded into a sub-triangular lobe. Operculum 

 (fig. 7) ovate, paucispiral, within flat and corneous, outside con- 

 cave and calcareous, with a deep sulcus at the suture. Height of 

 shell 13, maj. diam. 12, minor diam. 9 mm. 



Type in the Australian Museum. 



Judging from figures and description, this remarkable shell, of 

 a genus not hitherto recorded from Papua, nearest api)roaches 

 naticoides, Recluz ; it is dedicated to the writer's accomplished 

 friend. Lady Macgregor. On pi. xxv. fig. 20, I have .sketched the 

 radula. But a solitary example of this species was obtained. 



SiTALA ANTHROPOPHAGORUM, n.sp. 



(Pis. xxiv., XXV., and xxvi., figs, 1, 3, 21, 24.) 

 Shell conoid, rounded on the base and angled at the periphery, 

 very thin, smooth, shining, translucent, subperf orate. Coloured 

 as if made of gelatine. Whorls 5|, moderately rounded. Sculp- 

 ture : above and below faint, irregular, oblique, growth lines 

 mark the surface ; on the base in addition close, regular, waved, 

 concentric strife are visible with a microscope ; a raised thread- 

 like keel winds round the periphery and ascends the spire imme- 

 diately above the suture. Aperture a little oblique, subrhomboidal, 

 neither descending nor ascending, neither thickened nor reflected. 



