86 HELIX. 



whorls 6, sides flatly convex ; aperture quadrate ; peristome very 

 thin ; columellar margin much reflected, perpendicular. 



Size : maj. diam. 7*0 ; alt. axis 6'5 mill. (G. Aust.) 



Borneo. 



H. (Geotrochu*) subflava AUST., P. Z. S. 1891, p. 45, t. 2, f. 4. 



Has the appearance of Trochomorphoides. 



(2) GROUP OF H. WRAYI. (Philidora.) 



Philidora DE MORGAN, Bull, de la Soc. Zoologique de France, 

 1885, p. 384. First species, P. wrayi. 



The name Philidora was proposed by de Morgan as a generic term 

 to replace the preoccupied name Philina of Albers. If it were really 

 the same as Philina, the name would become a synonym of Obbina 

 Semper ; but it is not the same. In the absence of specimens I am 

 unable to say whether the group belongs in the neighborhood of the 

 Chinese Fruticicoloid Helices, such as Satsuma, or near the section 

 Trachia. De Morgan has given no diagnosis or characters of his 

 group. 



H. WRAYI de Morgan. PL 18, figs. 55, 56, 57, 58. 



Shell dextral, flattened, bluish-white, narrowly umbilicated, striate, 

 strongly carinated, composed of 5 whorls, ornamented with ribs 

 parallel to growth-lines ; upper surface of the whorls flattened, lower 

 surface rounded ; suture linear, very distinct. Aperture oblique, 

 elliptical irregular, encroached upon by the preceding whorl ; per- 

 istome reflexed. 



Alt. 6, diam. 15, length of aperture 8 mill. (Morgan.') 



Lahat, Ipoh, Valley of the Kinta River, Perak. 



Philidora Wrayi MORGAN, Bull. Soc. Zool. Fr. 1885, p. 384, t. 6, 

 f. 5. 



H. HARDOUINI de Morgan. PI. 18, figs. 60, 61, 62, 63. 



Shell dextral, flattened, translucid, corneous, widely umbilicated, 

 permitting the whorls of the spire to be seen within it ; finely striated 

 and very strongly carinated, carina extending to the aperture ; com- 

 posed of 5-6 whorls, which are flattened above, rounded beneath ; 

 suture a little distinct. Aperture oblique, elliptical, irregular, 

 slightly encroached upon by the preceding whorl ; peristome reflexed. 



Alt. 8, diam. 17 mill. This shell is of a corneous brown color, the 

 aperture lighter, (de Morgan.) 



