M. M. SCHEPMAN, LAND- AND FRESI1WATER MOLLUSCA ETC. 167 



Reeve. Conch. le, Hélix, fig. 493. 



Tapp. Canefri. Fauna Mal. New Guinea, p. 137. 



Pilsbry. Man. of Conch. Ser. II, Vol. VII, p. 24, PI. 8, fig. 42—45. 



Aru Islands. Fenuabori River, Dec. 25, 1907. 



The only spécimen, which is slightly worn, belongs to the colour-variety without bands 



on the upper surface. 



2. Papuina blainvillei Le Guillou. 



Le Guillou. Rev. Zool. 1842, p. 140. 



Pfeiffer. Mon Helic. Vol. I, p. 327. 



Reeve. Conch. le, Hélix, fig. 419. 



Tapp. Castefri. Fauna Mal. New Guinea, p 129, PI. 3, fig. 4, 5. 



Pilsp.ry. Man. of Conch., Ser. II, Vol. VII, p. 25, PI. 3, fig. 59, 60. 



Aru Islands. Fenuabori River, Dec. 25, 1907. 



Two of the spécimens may belong to var. /3 of Tapp. CANEFRI, with rather flat whorls 

 and Iow spire, the third has the spire higher, but the whorls are still less convex than in the 

 type. The lilac colour of the columella (though partly bleached) is characteristic. According 

 to the elucidations of Tapp. Canefri and PlLsBRY the shell is very variable in altitude. 



3. Papuina lorentzi n. sp. PI. V, fig. 3. 



Shell depressed, acutely keeled, conical above, convex belovv, narrowly umbilicated, 

 tawny, with a very narrow whitish line, occupying the keel, visible on the last whorl and 

 another narrow, blackish line just below the suture of last whorl, fainter on part of penulti- 

 mate whorl. Whorls about 5, slightly convex above, especially the apical ones, which are 

 slightly papillary, base a little concave near the keel, then convex; the shell if seen from above 

 or below, has an irregular outline, the last part of last whorl being considerably laterally 

 compressed, for more than one third of its circumference, scarcely descending just behind 

 the aperture. Apex smooth, sculpture of subséquent whorls consisting of fine growth-striae 

 and especially on the upper part of last whorl of some oblique malleations; base with the 

 striae slightly coarser and with rather irregular, shallow, spiral lines or grooves. Aperture 

 oblique, depressed, triangularly ovate ; peristome blackish, upper margin slightly expanded, 

 basai margin a little more, with an angle at the periphery, columellar margin short, triangu- 

 larly reflected and partly covering the rather narrow umbilicus, the margins are united on 

 the body-whorl, by a thin layer of enamel. 



Diam. maj. 36, ait. 21 ; apert, ait. diagonally 14, lat. ? mill. (alcohol). 



New Guinea. Near Bivak Island, Febr. 1910; Sabang-camp, June 28/30 1907; Resi Ridge, 

 Aug. 30, 1907; Alkmaar, Sept. 18, 1907. 



The spécimens vary in altitude, as may be seen from the above measurements, and in 

 size; moreover one of the spécimens from Sabang-camp has a rosy peristome and the black 

 line below the suture is wanting, as I think this is not merely due to being slightly bleached, 

 the typical colours being recognizable in the much more bleached spécimen from Bivak Island, 

 I wish to call it: 



