CHONDRIN.E OF THE PYRENEAN CENTER. 



45 



29. CHONDRINA PARINESI (Des Moulins). PI. 5, figs. 1, 2. 



Shell cylindric-conic, more or less lengthened, striate, brown ; 

 whorls 6-7, a little convex, the suture deep. Aperture sub- 

 oval, toothless ; peristome whitish, simple, not reflected ; um- 

 bilicus patulous virgulaeform. Length 6-G 1 /^, diam. 2 mm. A 

 variety is shortened, more conic, length 5, diam. 2 mm. 

 (DesM.). 



The shell is thin, chestnut-brown or carob-brown, finely and 

 irregularly striate, the striation sometimes almost effaced, 

 sometimes distinct. The whorls are strongly convex, the last 

 somewhat compressed laterally, rounded basally. The peri- 

 stome is thin, whitish, the columellar margin dilated, outer lip 

 unexpanded, strongly arcuate above. Typically there is no 

 trace of lamellae or plicae. 



