PTEROMYS. MAMMALIA. 127 



round, longer than the body, shaded with brown black and yel- 

 low. Nine inches long. Brazil Shaw. ii. pi. 156. 



S. pusillus, Desm. Fur gray olive brown above, paler below ; tail 

 round, shorter than the bod'y. Cayenne. Four and a-half inches 

 long. Shaw, ii. pi. 156. 



S. albovittatus, Desm.. Fur reddish above, with a white line on each 

 side ; tail round at its base, distichous at the extremity, and varied 

 with black and white ; nails long, compressed. One foot long. 

 Cape of good Hope. Sonnerat, Voy. ii. t. 89. 



S. bivittatus, Desm. Fur of a brown black, spotted with yellowish 

 on the back, and a brilliant red below ; a white and black line 

 meeting on each flank ; tail round, the termination red. A little 

 larger than the common squirrel. Sumatra. Lin. Trans, xiii. 



S. annulatus, Desm. Fur greenish gray above, white below ; tail 

 longer than the body, annulatedwith black and white Mam. 546. 



*** With cheek-pouches, tail distichous. 



S. striatus, Desm. Fur brown above, with five longitudinal brown 

 stripes, and two white ones ; whitish below ; tail blackish above, 

 red, bordered with black below. Southern Asia. Buff. x. pi. 28. 



S. Hudsonius, Desm. Fur of a reddish brown above, whitish ash- 

 coloured below, with a black line on each flank. Penn. Syn. 

 Qwfld.t.26, fig. 1. 



Several other species of Sciurus have been noticed ; but as their characters are not 

 well established their names are merely given. S. Persicus, anomalus, Gmel. ; ery- 

 thrceus, Horsf; Abyssimcus^ Indicus, an&flavusi the Plantain Squirrel of Pen- 

 nant ; the Mexican Squirrel of Seba ; and Rafinesque has described five North Ameri- 

 can species, viz. S. ruber, Felenus^ Phawpus, Melanotus, and lateralis, 



Gen. 107. PTEROMYS, Cuv. Desm. Sciurus, Lin. 

 Incisors f , canines g-g, molars f-f , - 22. Head round; ears 

 rounded ; eyes large ; fore-feet with four elongated toes with 

 compressed sharp claws and the rudiment of a thumb ; hind- 

 feet with five toes much divided ; tail long, hairy, sometimes 

 distichous ; skin of the sides extended, forming a kind of 

 parachute. 



* With round tail, hairs not distichous. 



P. petaurista, Desm. (S. petaurista, Pall.) The Sailing Squirrel. 

 Fur brown, tipped with white above, whitish gray below ; thighs 

 red; feet brown ; tail blackish. Seventeen inches long. E. Indies. 

 Shaw, ii. pi. 152. 



P. nitidus, Desm. Fur deep- chestnut above, brilliant red below ; 

 tail deep brown. Size of the preceding. Java Mam. 342. 



** With flattened tails, hairs distichous. 



P. sagitta, Desm. Fur of a deep-brown above, white beneath; tail 



bright brown, as long as the body. Six inches long. Java. 



Shaw, ii. 151. 



