MAMMALIA. 



497 



Sub-Division I.— Auctomys.— 1/. F. Cuyicr.— Without 

 dieek pouches. Habits social. 



Arctoviys marmoUa.—TuE Alpine Marmot.— Plate XV. 

 lip. 7.— Described, vol. II. p. 311 and 318. 



Arctomys empetra.—TnE Quebec Marmot — Plate XV. 



iig. 8. Fur blackish-brown, dotted with white above and red 



underneath ; tail short, and black at the end. Inhabits Canada. 

 ^ See vol. II. p. 316. 



Sub-Division II. — Spermophilus.— 31 F. Cuvier. — With 

 laige cheek pouches. Habits solitary. 



Arctomys Franhlinii.—F&AV^ixa's Marmot.— Plate XVI*. 

 fig. -t. — Fur fuscous and variegated; head broad; snout very 

 blunt; ears small; tail elongated. Inhabits Canada. 



Genus 19. — Capromys. — Desmarest. 



Generic Character.— Incisory teeth 2, no canines, grinders '-^ . 

 total 22. Upper incisors not very strong, transversely truncated 

 at the extremity, and not furrowed on the anterior surface ; the 

 lower ones slightly tubulate, and very similar to the upper ; 

 head long, laterally compressed ; tip of the snout truncated ; 

 ears large, erect, and lateral ; body bulky ; fore legs short ; feet 

 with four toes ; hind legs long ; teats four, two pectoral and 

 two abdominal. 



Capromys Furnieri — The Utia, or Fournier's Capromys. 

 — Plate XV*. fig. 4. — Fur rough, brown on the back of the 

 neck, back, flanks and exterior surface of the limbs ; each hair 

 has a ring of yellowish colour towards the extremity ; forehead, 

 chin, and under part of the neck gray ; rump reddish brown ; 

 belly brownish-gray ; upper parts of the toes covered with scales, 

 interspersed with hairs; neck short; tail naked, with about one 

 hundred and fifty scaly rings ; eyes situated near the line of the 

 .brehead. Size of a large rat. Inhabits the Island of Cuba. 



Genus 20. — SciURUs. 



Generic Character — Incisors Ij, no canines, grinders ^^4 ; to- 

 tal 22. The upper incisory teeth are flat in front, and wedge- 

 shaped at the extremity ; the lower pointed and compressed 

 laterally; grinders tubercular; head small; ears erect; eyes 

 large ; body small, elongated ; anterior feet with four long toes, 



