PUPILLA, MICROSTELE, PUPOIDES. 137 



N. W. China : Aksu, in a dry river bed. Type 547 Fan Mem. 

 Inst. Biol. 



Truncatellina paseudocylindrica Ping and Yen, Bull. Fan 

 Memorial Institute of Biology, vol. 4, p. 278; Truncatellina 

 pseudocylindrica on p. 279, fig. 15. 



"This species resembles in some way Truncatellina cylin- 

 drica (Fer. 1821), but that its size is much larger, with one 

 more whorl, the striae on its whorl surfaces are much finer, 

 and its parietal surface has a small nodule or tooth, although 

 it is very inconspicuous, make it different from the latter" 

 (Ping and Yen). 



This species and Pupilla cupa Jan, described by Ping and 

 Yen from the same place (1. c, p. 279), require comparison 

 with Pupilla miiscorum asiatica and P. cupa turcmenia. I 

 have not seen them, and it is a very difiicult group. 



Pupilla ( ?) inermis Eussell, 1931. Trans, Roy. Soc. 

 Canada, (3), vol. 25, p. 15, Probably Paleocene. Alberta. 



Pupilla grabaui (Ping). Pupa grahaui Ping, 1929, Palae- 

 ontologia Sinica, Series B, VI, fasc. 5, p, 10, f, da-c, pi. 1, f. 3). 

 Shueh Hua Shan, Hopei Province, China, in the supposed 

 Hipparion red clay ; if so, of Pliocene age, A sinistral species. 



Pupilla hopeiensis (Ping), Pupa hopeiensis Ping, 1929, 



1, c, p. 11, f. 5a-c, pi. 1, f. 5a-c. Same locality and horizon. 



MICROSTELE (Vol, 26, p. 147). 



Microstele pingi, n. n. Pupa suhconica Ping, 1929, 1. c, 

 p. 11, f . 4a, h ; pi. 1, f , 4, Not Pupa suhconica Sandberger, 

 1858, Shueh Hua Shan, Hopei Prov., China, in the supposed 

 Hipparion red clay; if so, of early Pliocene (Pontian) age. 

 I have not seen this fossil, but its characters seem to be wholly 

 those of Microstele. 



PUPOIDES Pfr, (Vol, 26, p, 108) , 



Pupoides "Fer." Hermannsen, 1848, Ind. Gen. Malac, vol. 



2, p. 364, type Helix carinula Gmelin (Syst. Nat. (13), p. 

 3655, based upon Chemnitz, Conch. Cab. IX, p. 190, pi. 136, f. 



