PUPILLA. 253 



without teeth or angular tubercle. Peristome is well ex- 

 panded, colored like the shell, very little thickened within, the 

 margins converging; columellar margin dilated. Parietal cal- 

 lus extremely thin. 



Length 2.9, diam. above aperture 1.35 mm. ; to edge of outer 

 lip 1.5 mm. ; 4% whorls. Type, B. W. coll. 



Length 3.1 mm. Paratype, ANSP. 134150. 



Australia: Bundaberg, Queensland (Cox). 



The type lot was from Cox in the Ponsonby collection, now 

 in that of Bryant "Walker, a paratype in ANSP. coll. 



This species is quite unlike any known Australian snail by 

 its sculpture and entire absence of teeth. It has some resem- 

 blance to the American group of Pupoides hordaceus, and also 

 to the minute Negulus suturalis. 



MICROSTELE Bttg. 



MlCROSTELE NOLTEI (Bttg.). Vol. XXVI, p. 150. 



Reported from Omaruru by E. Degner (Beitr. zur Kenntnis 

 Land- und Siisswasserfauna Deutsch-Sudwestafrikas, 1922, p. 

 33, f. 11). The last whorl has a well-developed keel at the 

 base, sharper than in Boettger's type. 



Genus PUPILLA Leach (Vol. XXVI, p. 152). 



The distribution and characters of German species of Pu- 

 pilla have been lucidly discussed by D. Geyer in Nachrbl. D. 

 Malak. Ges., vol. 42, 1910, pp. 12-18. The distinction of P. 

 bigranata Rossm. from all forms of muscorum is upheld, and 

 that species is said to occur in England, Iceland, Spain, 

 France, Switzerland, Italy, loess of South Russia and in Tur- 

 kestan. 



Two keys are given for the discrimination of German 

 species, as follows: 



I. Larger forms, length 3 to 3.5, diam. 2 mm. 



1. Whorls wide, weakly convex, suture deep : muscorum. 



2. "Whorls narrow, roundly convex, suture deep : sterri. 

 II. Smaller forms, length 2 to 2.5, width 1 to 1.5 mm. 



1. "Whorls weakly convex, suture shallow: bigranata. 



2. "Whorls strongly convex, suture deep : triplicata. 



