MAMMALIA. 695 



Tail of various length, always longer than half the "body. (Dental 

 formula as in the preceding genus.) 



Compare on the subdivisions of this genus F. CUVIER Mem. du 

 Mus. x. pp. 116 128, PL x. 



Tamias ILLIG., F. CUVIEK. Buccal pouches. 



Sp. Sciurus striatus L. (in part), PALL. GUr. p. 378, Siberia, also Japan; 

 Sciurus Lysieri RICHARDS. Faun. bor. Am. i. PL 15, p. 181 (fig. cop. in 

 Cuv. R. Ani., ed. ill., Mamm. PL 53, fig. 2); North America (LiNN^EUS 

 included both species under the name of Sc. striatus). The mode of life of 

 this species agrees, according to RICHARDSON, with that of the Siberian. 

 These animals live in holes under ground and do not make their nest in 

 trees, like the common squiiTels, which have no buccal pouches. They have 

 the tail shorter than the body, shorter feet than the rest of the squirrels, 

 and in some degree the habitus of Spermophilus. 



Sciums (in stricter sense). Buccal pouches none. 



a) With hair rigid, setose, and ears short (Xerus EHBENB.). Sp. Sciurus 

 setosus FORSTER, Sciurus Levaillantii KUHL. (A large species from South 

 Africa, above pale ruddy-brown, below grey, tail variegated, brown and 

 white, feet pale coloured, a white longitudinal streak on each side. All 

 the species of this subdivision hitherto known are from Africa.) 



/8) With hair soft. Sp. Sciurus vulgaris L., BUFF. vii. PL 32, SCHREB. 

 Sdugth. Tab. 212; the squirrel, Vecureuil, das Eichhornchen ; commonly 

 reddish, chestnut-brown on the back, belly white, a tuft of hair on the 

 ears, the hair on the long tail directed to the two sides. This species lives 

 in trees in Europe and the North of Asia ; in the North it becomes grey 

 in winter (see a fig. in Cuv. R. Ani., ed. ill., Mammif. PL 53, fig. i); it 

 supplies in this state a fur known by the name of petit gris. Many species 

 are found of this genus (the most numerous of the whole order) in Africa, 

 Asia and America. Amongst the Eastern species we notice Sciurus maxi- 

 mum SCHREB., (Sciurus macrourus ERXL.), SCHREB. Sdugth. Tab. 217, 

 Diet. univ. tfHist. not., Mammif. PL 9, fig. i, and Sciurus exilis S. 

 MUELLER, NatuurJcundige Verhandelingen over de Nederlandsche Bezittingen, 

 Mammalia, PL 15, fig. 4, as the two extremes as to size (the last from 

 Borneo not larger than a mouse). Sciurus laticaudatus S. MUELLER, ib. 

 fig. i, a species from the same island, differs remarkably from the rest 

 of the squirrel-species by its long and very narrow skull ; the sub-genus 

 Tamias (see above) resembles it to a certain degree in its skull. 



The sub-genus Macroxus F. Cuv. is distinguished by a narrow and more 

 cylindrical tail and a large scrotum. Sp. Sciurus cestuans L., BUFF. vn. 

 PL 65, MAXIM. Abb. zur Naiurgesch. Brasiliens. Liefer, in. 



Chiromys Cuv., GEOFFR., ILLIG. Incisor teeth compressed, 



4 4 



acuminate ; molars o _o > enamelled continuously, tuberculate, flat, 





