MAMMALIA. 693 



Sp. Arctomys marmota Schreb., Mus marmota L., Buff. viii. PI. 28, 

 ScHREB. Siiugth. Tab. 207, Cuv. R. Aid., id. ill., Mammif. PI. 55, fig. 

 i; the skeleton figured in Pander m. D'Alton Vergl. Osteol. Heft v. 

 Tab. 6: the marmot; 1,1 feet long, tail 6"; gi-eyish-yellow, top of the head 

 dark grey, tail at the base russet, at the tip brown, incisors yellow ; lives 

 near the snow-line on high mountains of Europe ; they pass the winter in 

 their holes asleep. Compare on this animal Gesner Quadrup. p. 743, 

 ScopOLi ^?»i. kisf. nat. 11. 1769, pp. 37, 38. — Arctomys bobac, Mus bobac 

 Pall. GUr. Tab. 5 ; in Poland, Russia and the North of Asia. The re- 

 maining species are from North America, as Arctomys monax Gm. (from 

 which Arct. empetra a,nd prmnosv,s, according to the Prince of Neuwied, 

 do not differ), ScHREB. Sdugth. Tab. 210, Gukr. Iconogr., Mammif. PI. 



Spermojihilus F. Cuv. Buccal pouclies. Tail short or moderate, 

 witli hair at the base and upper part of the sides close, short, at the 

 point and sides longer. (Species smaller and more slender.) 



Sp. Arctomys citellus Gm., Mus Citellus L., Pall. Glir. Tab. 6, Schreb. 

 Sdugth. Tab. 211 A; in Bohemia, Austria, Hungary and Siberia; — Arc- 

 tomys Hoodii Sabine, Sciurus tvedecimlincatus Mitchill, Richardson 

 Faun. bar. Am. I. PI. 14 ; a prettily marked species from North America, 

 brown above with yellow longitudinal stripes, alternating with rows of 

 round yellow spots ; grey below, &c. 



This sub-genus, more numerous in species than the preceding, forms the 

 transition from the marmots to the squirrels. The marmots and squirrels 

 have much resemblance in their skull; the frontal bone is furnished with a 

 process descending behind the orbits. The skull of the marmots is, how- 

 ever, flatter and less broad between the orbits than in the squirrels. 



Phalanx III. Sciurina (in stricter sense). 



4 — 4 

 Atwvialunis Waterh. Molar teeth ^ — 1 5 complex, with 



crown quadrate, the lower grooved on the inside. Ears triangular 

 and oval, somewhat naked. Fore feet with four toes and hallucar 

 wart, hind feet pentadactjlous. Claws compressed, incurved. Hairj 

 skin expanded between the humerus and the hind feet, produced 

 from the soles to the thighs, and joining the tail at its base with 

 the thighs. Tail longer than half the body, clothed with rigid 

 hair, longer at the extremity, and covered below at the base with 

 a double row of horny scales alternate, imbricate. 



Sp. Anomalurus Fraseri Waterhouse, Proceed, of the Zool. Soc. 1842, 

 pp. 125 — 127; — Anomalurus Pelii Temm. Esq. Zool. sur la cote de Guine, 

 p. 146; black, grey below, head above the nose and the posterior margin 

 of the parachute pure white, taU long and pale russet; — Anomfal, laniger 



