PUPELLA, ASIA. 199 



region remained imperfect, hence only front view is given. 

 The description was drawn up before the accident (Hilber). 



24. PUPILLA AEOLI (Hilber). PL 22, fig. 13. 



The shell is very small, cylindric, with a narrow, semi- 

 circular umbilicus, extremely finely striate, consisting of 6 

 whorls. The first two whorls of my specimen are blackish, the 

 rest white. The aperture is rather circular, with a strong, 

 internally thickened, reflected peristome. On the thin, hardly 

 perceptible callus connecting the margins a strong tooth 

 stands near the right margin ; below this there is an inner 

 parietal tooth beginning rather far from the other. About in 

 the middle of the right margin there is a nodule on the inner 

 lip, which corresponds to a weak concavity of the peristome. 

 A distinct neck fold is present. Alt. 3.5, greatest diam. 1% 

 mm. (Hilber). 



China: Hoj-njing-shien, Prov. Kan-su (Gan-su), one speci- 

 men from the loess of the mountain-side (v. Loczy). Sant- 

 shuan, Ndami, Kloster Djoni and Tan-tshang, in the same 

 Province (Mlldff.). 



Pupa (Pupilla) aeoli HILBER, SB. Math.-Nat. Cl. K. Akad. 

 Wissensch., Wien, 88 Bd., 1 Abth., 1884, p. 1377, pi. 6, f. 10 ; 

 repeated in Wissensch. Engebn. Reise Szechenyi in Ostasien, 

 ii, 1898, p. 617, pi. 4, f. YI. Pupilla aeoli Hilber, Mlldff., 

 Ann. Mus. Zool. Acad. Imp. Sci. St.-Petersb., vi, 1901, p. 382. 



P. aeoli terra n. subsp. PL 22, figs. 6, 7. In the Gan-su 

 specimen seen the lip is very broad. The angular lamella is 

 represented by a rather low, transparent callous ridge run- 

 ning from the termination of the lip to the parietal lamella, 

 which is high and strong. In a very oblique view in the mouth 

 the columella appears weakly, obliquely truncate below, but 

 without a tooth. There are no palatal folds, and only the 

 weakest trace of a crest. The very fine striation is sharp and 

 distinct on the intermediate whorls. Length 3.2, diam. above 

 aperture 1.6 mm. ; 6% whorls. 



This is evidently the form commented on by von Moellen- 

 dorff. It differs from aeoli as described by Hilber by the 

 union of the angular and parietal lamellae and the obsolescence 

 of the crest ; not characters of much importance in Pupilla. 



