HELIX-CAM.ENA. 207 



3. Var. POLYZONA Mollendorff. PL 26, fig. 3. 



Always raultifasciate with brown ; shell elevated-globose, like H. 

 hainanensis in contour, and proportionally more elevated ; umbili- 

 cus wholly covered. 



Alt. 43, diam. 46 mill. ; alt. 45, diam. 48 mill. 



Hongkong, China. 



All three agree with xanthoderma in the fine, regular wrinkling, 

 the strongly raised last whorl, and the total lack of umbilical fissure. 

 I believe, therefore, that a combination of all these forms with hain- 

 anensis is not necessary, but that the banded form from the main- 

 land and from Hongkong may be referred to H. xanthoderma, and 

 H. hainanensis be left as a distinct species. (Mlldff.^) 



Group of H. monochroa Sowb. 



The following Philippine Island species have been variously 

 classed by authors. The large nucleus and malleated sculpture show 

 them to belong to Camcena (as I have restricted that section) rather 

 than to Hadra. It may be noted that while many Philippine 

 Island helices belong to groups distributed to the south and south- 

 west of the Archipelago, the Camcena are evidently of northern der- 

 ivation, being more allied to the species of China. 



H. TRAILLI Pfeiffer. PL 23, figs. 63, 64. 



Shell large, globose-conoid (or turbinate), elevated, narrowly 

 nearly closed umbilicated ; solid, strong, opaque, russet-brown above, 

 becoming reddish-chestnut on the body-whorl, encircled by an ill- 

 defined dark band midway between periphery and suture, the 

 periphery marked by a narrow darker band, bordered below by a 

 wider porcelain-white zone ; this is followed by a wide dark brown 

 zone, below which there is a large white umbilical tract. Surface 

 closely and very strongly ribbed-striate above, less distinctly so be- 

 neath ; and slight traces of malleation are visible. The spire is ele- 

 vated, conical ; apex whitish, a little blunt ; nucleus large, consist- 

 ing of 2? whorls, the last part darker than the beginning of the fol- 

 lowing whorl ; suture impressed. Whorls 5, convex, the last large, 

 descending gradually in front, rounded at the periphery. Aperture 

 oblong-truncate, oblique, Avhite but showing the bands inside ; peri- 

 stome rather broadly expanded all around, dark brown, variegated 



