218 HELIX-EULOTA. 



vex, sensibly increasing, the last dilated, shortly descending in 

 front; suture deep. Aperture large (10 mill.), sublunar, oblique, 

 liver-violet colored ; peristome thin, very narrowly expanded (more 

 widely below), the margins separated, basal margin subsinuous. 

 Alt. 12, diam. 22 mill. (Gred.) 



Pe-shang, southern Hunan, China. 



Helix franciscanorum GREDLER, Mai. Blatter, ix, p. 2, (1886); 

 Annalen desK. K. Naturalist. Hofmus. ii, p. 284, 1. 11, f. 7-9 (1887). 



Var. minor, 9x18 mill. ; umbilicus slightly narrower; whorls 5?, 

 the upper subangular around the suture. 



H. EXTRUSA Tapparone-Canefri. PI. 54, fig. 100. 



Under this name Canefri separates the form figured in the Con- 

 chologia Indica, pi. 53, fig. 2, as Helix similaris var. It is interme- 

 diate between H. similaris and H. bolus, agreeing with the former 

 in the structure of the shell, and with the latter in the form of the 

 aperture. 



Katha, upper Irawaddy. 



Helix (Dorcasia) extrusaT. C., Ann. Mus. Civ. Genov. (2), vii, p. 

 326,1889-1890. 



C. BALANSAI Morlet. PL 54, figs. 4, 5, 6. 



Shell narrowly umbilicated, subglobose-depressed, thin, entirely 

 white, convex beneath ; radially striated, covered with a thin hispid 

 epidermis (the hairs short, close, arranged in quincunx). Spire 

 subdepressed ; whorls 5 , slightly convex, separated by a simple 

 suture, the last whorl slightly descending. Aperture oblique, semi- 

 lunar, white inside, the margins joined by a thin transparent callus ; 

 basal margin arcuate, the columella short, expanded, partly cover- 

 ing the umbilicus; peristome bluish-white, thick, outwardly 

 reflexed. (Mori.) 



Alt. 15, diam. 27 mill. 



Bay of Malong and Mount of the Elephant, Tonquin (Jourdy). 



Helix balansai MORLET, Diagn. de Moll. terr. et. fluv. du Tonkin, 

 p. 1, July 23, 1886 ; Journ. de Conch. 1886, p. 270, t. 12, f. 4, 4a. 



A variety (fig. 5) has a brown band at the periphery and a 

 chestnut-brown lip. Morlet compares the species with H. propinqua 

 Pfr., a smaller species with higher spire, wider umbilicus and 

 rounder aperture. 



