404 On a new Species of Pteromys. 



culates on to the space between the eondyle of the ulna, 

 and the carpal bones, this is pliable and semi-cartilaginous, 

 and moved by two tendons, inserted into the muscles of the 

 fore-arm, which serve to retract or extend it. The tendon 

 extending the bone, is inserted into a muscle on the inner 

 or thumb side of the arm, which acts on a ligament, spread- 

 ing over the palm, and adhering to the parachute bone 

 along its anterior side ; the other ligament passes forward 

 from the head of the bone, towards the outer or little 

 finger. The parachute bone has a regular condyle at its 

 articulation and ends in a blunt cartilaginous point. There 

 are no muscles or tendons in the parachute membrane 

 itself, which is passive and alone acted on by the fore and 

 hind extremities. 



Tongue. — Is long, rounded, and broad at the end ; not 

 cleft or furrowed, smooth. The Oral drinks by lapping slowly. 



Habitat. — All the deep saul forests west of Midnapoor, 

 Jungleterry districts, Singbhoom, and southward and west- 

 ward, avoiding the high table land of Choota Nagpoor. 

 How far the Oral extends beyond these limits I cannot say. 



The several known species of the flying squirrel affect 

 either cold climates, or the highest and coolest situations 

 of warm ones. The Oral, however, although thickly clad 

 with fur, is found in the lowest parts of the jungles, fre- 

 quenting indifferently the hot sultry spots at the bases of 

 hills, or cool shaded coverts near streams. It never as- 

 cends the hills, but rambles along from tree to tree, com- 

 ing near villages into the mowhooa and mangoe planta- 

 tions, as the night advances. It avoids, however, the dry 

 stony tracts, covered with a scanty grass vegetation, assun, 

 polas, keond, (or ebony,) which form the principal feature 

 of the jungles in the above named districts, and keeps to 

 the water side, or to narrow vallies, or bases of hills, 

 where a richer soil accumulates, and allows of the growth of 

 large timber. 



