74 HELIX-PANDA. 



A magnificent species. The shell before me lacks epidermis, and 

 this is the case I believe with all known specimens ; it is probably 

 constantly deciduous, as in the Ceylonese Acavus. The embryonic 

 shell is very large, as in the other species of Helicophanta. It is of 

 a tawny color, bandless, and shows rather prominent and regular 

 wrinkles of growth ; under a lens very minute granulation is visible. 

 The last IT whorls are banded. 



H. FOLLIS Ferussac. PL 15, fig. 76. 



Under the above name Ferussac gives a figure of a gigantic Helix 

 belonging to the collection of the museum of Paris. There is but a 

 single individual known, it being one of the rarest specimens in the 

 collection. It is nearly the size of a man's fist, is quite globose ; the 

 spire is short and obtuse ; it is formed of 4 convex, rapidly increas- 

 ing whorls ; the last one enormous, forming most of the shell, is glo- 

 bose, its diameters nearly equal. Umbilicus none. Aperture very 

 large, obrotund, semilunar, a little oblique, a little higher than wide ; 

 peristome simple, not very thick, obtuse. The shell is thin, some- 

 what transparent, smooth, with a few slight marks of increment. 

 Color milky-white, with a broad reddish-yellow zone around the 

 axis, upon which there are three equidistant brown bands, formed 

 of a multitude of close, fine longitudinal lines. 



Alt. 88, diam. 83 mill. 



Habitat unknown. 



H. follis FER., Histoire, t. 17, f. 4. DESH. in Fer., Hist., p. 268. 

 PFR. Mon., i, p. 191. 



A portion of Deshayes' description of this unique shell is given 

 above. 



Section II. PANDA Albers, 1860. 



Panda Albers, Die Heliceen (edit. Martens), p. 149. PFR. Nornen. 

 Hel. Viv., p. 170. FISHER, Manuel de Conch., (as sect, of 

 Helicophanta). 



Shell very large, globose-ovate, umbilicate or imperforate, higher 

 than wide, thin but solid ; spire short, obtuse ; body-whorl very 

 large, yellowish, variegated and spirally zoned with chestnut. 

 Whorls 4-1. Aperture higher than wide, ovate; peristome simple, 

 not expanded. Columella subvertical, sinuous, dilated and reflexed ; 

 parietal callus thin. Type H.falconeri Reeve. 



