670 



MR. R. I. POGOCK ON THE EXTERNAL 



- The Hind Foot. 



The hind foot in Sicista subtilis, according to TuUberg's figure, 

 is much broader a.nd shorter than in Apodemus sylvaticus, but 

 closely resembles in those particulars the foot of Rattus norve- 

 gicus. The hallux is shorter than in that species and closer to 

 the second digit, and the second, third, fourth, and fifth digits 

 are subequally spaced and close together, as in the fore foot, the 

 third and fourth projecting a little beyond the second and fifth. 

 The claws are short and the digita,l pads normal a,nd semi- 

 elliptical. The plantar pad is represented by four separated 

 interdigital elements, the median being comparatively large and 



Text-fisfure 33. 



A. Right lund foot of Allactaga indica. 



B. The same of Scarturus tetradactylus. 



C. The same of Jaculus jactdus, with hair cut short. 



triangular, the others much smaller and subcircular, the one at 

 the base of the hallux being remote from the rest and only a 

 little in advance of the external metatarsal pad, which is also 

 quite small and subcircular, while the internal metatarsal pad is 

 elongated and situated near the inner edge of the foot halfway 

 between the heel and the hallucal element of the plantar pad. 

 (Text-fig. 32, E.) 



The hind foot of Zapus is very different from that of Sicista. 

 It is very long and slender, the second, third, and fourth digits 

 being well in adva.nce of the first and fifth, with the second 



