MAMMALIA. 691 



complex than those of Dlpus, are figured by F. Cuviek Des dents des 

 Mcmimif. No. 76, p. 189.) ^ 



Jaculus Wagler, Wagn., Meriones F. CuY. (not Illig.). 

 Upper incisors indented by a longitudinal groove. Molar teeth 



-^ — :^ , furnished with roots, the first upper small, the rest witli 

 — 



crown figured by undulant folds of enamel. Ears rounded, witli 

 short hair. Fore feet with four toes and hallucar wart with flat 

 nail ; hind feet pentadactylous, with three middle toes long, strong. 

 Tail very long, somewhat Uidved. 



Sp. Jacuhis lahrador his 'Wagn., Gerhillus labradorius Harlan {Faun. Americ. 

 p. 157), Meriones labradorius Richardson, Fauna lor. Am. PI. 7, p. 144; 

 in the aSTortheni regions of North America ; a small animal of the length 

 of ahout 10 inches, of which the tail forms more than one-half; red-brown, 

 darker brown on the back, on the sides and below white. 



N'otc. — Genus Dipodomys Gray, furn'shed with buccal pouches, is un- 

 known to me. Sp. J). Philij^pii from Mexico. See Ann. of nat. Hist. 

 VII. 1841, pp. 521, 522; — Dipodomys agilis Gambel from California, ih. 

 Sec. Series, Vol. III. 1849, p. 318. 



Family XXXI. Sciurina. Incisor teeth smooth, com- 



5 — 5/ , 4 — 4 4 — 4\ 



pressed, molars mostly j — 7 (sometimes j — ^ °^ q — 5]' enamelled 



continuously or complex, furnished with roots. Feet either all 

 pentadactylous, or fore feet with four toes and thumb-wart. Tail 

 hairy. Clavicles perfect. 



Phalanx I. Myoxlna. 



4-4 

 Myoxus ZiMMER]MANN, BoDD., Gm. Molar teeth j — ^ ^ "^ith 



rows in each jaw parallel, remote, the crown with transverse strias 

 narrow, approximate. Ears moderate, rounded and oval, with short 

 hair. Whiskers long. Fore feet with four toes and hallucar wart, 

 clawless, hind feet pentadactylous ; claws small, compressed, in- 

 curved, sub-erect. Tail long, densely clothed with long hair, in 

 some sub-distichous. 



Sp. Myoxus ffJis ScHREB., Sciurus Glis L., Buff. viii. PI. 24, Scheeb. 

 Sdugth. Tab. 225, Guer. Iconogr., Maminif. PI. 24, fig. 2; le loir, der 

 SiehenscJddfer ; pale ash-coloured, white below, a dark brown ring round 

 the eyes, size of a rat ; this species is the glis of the ancients, which they 



44—2 



