240 SOME CHINESE VERTEBRATES. 



from Washan, Lianghokow, and Tachiao, all in western Szechwan, at altitudes 

 of from 3,000 to 12,000 feet. The skins are very uniform in color and agree 

 closely with the excellent figures by Milne Edwards. The collector's measure- 

 ments of the fresh specimens show the following extremes: total length, 127-, 

 155 mm.; tail, 59-72; hind foot, 14-17.5; average of nine specimens, 137, 65 

 and 16 mm., respectively for these three dimensions. 



The tooth formula of this species was supposed by Milne Edwards to be 

 IiCiPjMi. Thomas (1912), however, in a series of specimens from Omisan 

 found that the formula included four upper premolars and two lower incisors; 

 and although in other respects the specimens showed no differences, he founded 

 for them the genus and species Rhynchonax andersoni. Curiously enough, our 

 series shows still a different formula. All the specimens have a large and a 

 second minute lower incisor, as in , "Rhynchonax" ; but four have three, and 

 three others have a fourth upper premolar. It would seem that the variation is 

 individual rather than generic, since the two variations occur in specimens from 

 the same locality that are otherwise identical. I prefer to regard these as 

 variants of a single species, which is in process of losing the minute upper 

 third premolar and the small lower incisor, and which in the individual 

 presence or absence of these teeth shows parallelism with numerous similar 

 cases among the Chiroptera. 



SORICIDAE. 



ANUROSOREX SQUAMIPES Milne Edwards. 



A fine series of this almost tailless shrew was secured from Washan, in 

 western Szechwan, and a few additional specimens are from Hupeh, at Hsien- 

 shanhsien, 4,500 feet, and Changyanghsien, 5,500 feet. These all show a close 

 agreement among themselves, and average smaller than the measurements 

 given by Milne Edwards for the type, as will appear from the following table 

 which includes, first the dimensions of the type, then those of three specimens 

 from Hupeh : - 



Hupeh Hupeh Hupeh 



Type 7227 <? 72289 72269 



Total length 110 100 98 98 



Tail 9 10 10 11 



Hind foot 16 15 15 15 



Length of skull 27 24 25.5 

 Greatest breadth of skull 15 13.2 



Upper tooth row 13 11.2 12 11.7 



Lower tooth row 12 10 11 10.7 



