HELIX-PAPUINA. 45 



H. gestroi T. C., Ann. Mus. Civ. Genov. xix, p. 150, t. 4, f. 3 ; t. 

 5, f. 3 (shell) ; t. 7, f. 2, and t. 8, f. 5, 14 (Anatomy). 



Differs from the preceding species in the more globose form, spire 

 more elevated, base more convex, aperture less elliptical ; in the 

 pallid coloration and white interior of the aperture ; the relative 

 altitude of the last whorl ; and in lacking the fine strke which in the 

 other species intersect the elevated stride of the surface and render 

 them crenulated. 



H. SICULA Brazier. Unfigured. 



Shell narrowly umbilicated, depressly globose, rather solid, finely 

 striated ; pale brown ornamented with three chestnut bands, two 

 narrow and one broad contiguous to that at the suture ; spire 

 conoid, apex dark brown, obtuse, whorls 5, slightly convex, rounded 

 at the periphery, convex at the base, ornamented with eight narrow 

 spiral chestnut lines ; aperture diagonal, roundly lunate, peristome 

 rose-pink, slightly expanded and reflected columella dilated and 

 reflected, concealing one-fourth of the umbilicus. Var. With chest- 

 nut band on the periphery, and running spirally around the suture 

 to the apex. (jBraz.) Alt. 13, greater diam. 20, lesser 16 mill. 



Banks of Katau River, New Guinea. 



H. (Geotrochus) siculus BRAZIER, Proc. Linn. Soc. N. S. Wales 

 i, p. 106, 126. H. (Papuina) sicula TAPP. CAN., Ann. Mus. Civ. 

 Genov. xix, p. 153, 1883 ; 1. c. 2d series, iv, p. 138, 1887. 



Two specimens only were found ; on trees. 



H. MACLAYANA Brazier. Unfigured. 



Shell covered with a thin yellowish-brown epidermis, umbilicated, 

 depressly conoid, rather solid, obliquely plicately striated, every- 

 where minutely malleated, encircled with numerous spiral broken 

 purplish-chestnut lines and whitish opaque patches ; spire somewhat 

 obtuse ; whorls 4J moderately convex, the two apical whorls smooth, 

 white, the last large, convex, descending in front ; suture impressed, 

 having a narrow white line; below the suture blotches of purplish- 

 chestnut ; base convex having four spiral purplish lines slightly 

 broken up into blotches ; aperture very oblique, large, ovate, interior 

 purplish-brown ; peristome thickened, white, reflected, margins 

 approximating, the right rather thin at the upper part ; columellar 

 margin thickened, broadly expanded and reflected covering half of 

 the umbilicus. 



