268 HELIX-CHLORITIS. 



I am not sure that all of the species I have placed here belong 

 together ; but being under the necessity of grouping the forms in 

 some manner, and having no clue to the chaos of Oriental Helices 

 save the obscure hints furnished by the shell alone, I have built up 

 this apparently natural group. Its members agree in having the 

 apex and generally the whole shell hairy or studded with hair-scars 

 in close, regular, oblique rows ; in the narrowly, evenly reflexed lip, 

 the light, thin shell, unicolored or with a supra-peripheral band. 



As a whole, they differ from Trachia (a section which seems to be 

 most closely allied), in having the whorl less deflexed in front, 

 whorls more robust, terminations of the lip less approaching. From 

 Dorcasia and Planispira their granulated apices distinguish species 

 of the present group ; and the same characters separate them from 

 Trichia and other hirsute members of the Fruticicola series of 

 Helices. 



Besides the species given below, the following forms (among 

 others) probably belong here : 



H. hungerfordiana Nevill, Manual iii, p. 182, pi. 40, figs. 27, 28. 

 Formosa; Hongkong. f II. tomentosa Pfr. (and some allied forms), 

 Manual iii, p. 212, pi. 49, fig. 96. H. tranquereyi C. & F. (Journ. 

 Conch. 1863, p. 353) Manual iv, p. 64. Lysinoe seriatiseta Roche- 

 brune, Bull. Soc. Philomathique de Paris, 1881-2, p. 69, 1882. 



H. BREVISETA Pfeiffer. PL 52, figs. 80, 81. 



Shell umbilicated, depressed, rather thin, covered with very short, 

 close hairs ; subdiaphanous, pale fulvous ; spire scarcely raised ; 

 whorls 5, a little convex, the last little descending, subangulated 

 below the middle, and also around the large, funnel-shaped 

 umbilicus. Aperture little oblique, rotund-lunar ; peristome white ; 

 shining, margins converging, upper and basal margins arcuate, re- 

 flexed, columellar margin short, dilated above. Alt. 10*, greater 

 diam. 22, lesser 18* mill. (Pfr.') 



Siam, Perak. 



H. breviseta PFR., Journ. de Conchyl. 1862, p. 41, t. 5, f. 4, 5; 

 Monogr. v, p. 387. Planispira breviseta J. L>E MORGAN, Bull. Soc. 

 Zool. France, for 1885, p. 386. 



If Pfeiffer really meant " Anfr. ult. infra medium obsolete sub-an- 

 gulatus," this character sufficiently distinguishes the species from 

 H. tenella. 



