28 HELTX-PAPUINA. 



Cox, Monogr. Austr. L. Sh. p. 66, t. 2, f. 1. HEDLEY, Proc. Koy. 

 Soc. Queensl. v, p. 63. 



A pyramidal white shell, having some slight resemblance to 

 H. gartneriana, but differing in the deflexion of the whorl at the 

 aperture, non-expanded outer lip, etc. The species has, in fact, no 

 near relatives. 



(5.) GROUP OF H. ANTIQUA. 



Globose-turbinate species, perforated, the spire elevated, last whorl 

 not carinated, not descending in front ; lip broadly expanded, the 

 concave columellar margin having a small tooth in the middle. 



H. ANTIQUA Adams & Keeve. PI. 14, figs, 56, 57 ; pi. 17, fig. 36. 



Shell covered-perforate, globose-turbinate, solid, obliquely striated, 

 white. Spire turbinate, apex rather obtuse. Whorls 4?, convex, 

 rapidly increasing, the last rounded, not descending in front. Aper- 

 ture oblique, truncate-oval; peristome simple, broadly expanded 

 and reflexed, the columellar margin subcallus, subdentate inside, 

 dilated-appressed above the perforation. (P/K) 



Alt. 31, greater diam. 30 mill. 



Usang, Borneo. 



If. antiqua AD. & Rv., Voy. Samarang, Zool. p. 61, t. 16, f. 1. 

 EVE., Conch. Icon. f. 402. PFR., Monogr. iii, p. 172; Conchyl. 

 Cab. p. 400, t. 144, f. 14, 15. v. MART., Ostas. Zool. Landschn. 

 p. 322. 



A unicolored white shell, with rounded periphery and toothed 

 columella. 



Var. XANTHOSOMA Pilsbry. PI. 17, fig. 36. 



Obliquely umbilicated, turbinate ; composed of 4 whorls, the 

 earlier two very convex, the last not descending in front ; suture 

 impressed, margined below by an impressed line. Surface very 

 delicately obliquely striatulate ; color lemon-yellow, paler on the 

 last whorl. Aperture rather large, oblique, with a satin-like luster 

 inside ; lip white, very broadly expanded, and reflexed ; columellar 

 margin arcuate, toothed in the middle, broadly expanded above and 

 around the oblique umbilicus which rapidly narrows to a mere 

 perforation. 



Alt. 24J, greater diam. 22, lesser 17 mill. 



Aperture (measured outside of peristome), oblique alt. 19, width 



17 5 mill. 



New Guinea? 



