194 CLASS MAMMALIA. 



Another species of the Flying Squirrels is the Sciurus 

 Sagitta, of Pennant, which is an inhabitant of Java, in 

 which Island, according to Dr. Horsfield, there are four 

 distinct species, two of which he describes as new to syste- 

 matic catalogues. We shall abridge his account of one of 

 these last, the Pteromys Genibarbis, or Kechubu, of the 

 Javanese, in which he compares this species with the S. 

 Sagitta of Pennant, sufficiently to serve as specific descrip- 

 tions of both. 



The specific epithet Genibarbis is derived from a nume- 

 rous series of vibrissas, disposed on the cheeks in a radiated 

 manner, on the sides of the head, above the upper lip, and 

 on the extremity of the lobes of the ears, which seem to 

 distinguish it from all others. These on the sides of the 

 head are longer than the head itself, spreading, and of a 

 dark colour; those on the cheeks occur from the posterior 

 canthus of the eye, towards the jaws, consisting of above 

 twenty separate bristles, closely applied to the sides of the 

 head, about an inch in length in the middle, and gradually 

 decreasing at the upper and lower margin ; those again on 

 the ears arise from the base of the posterior portion of the 

 lobe of that organ, and constitute a fascicle of long and 

 slender bristles, partially concealed by those on the cheeks, 

 spreading far from the head, and exhibiting a character 

 very different from the brush-like appendages, which con- 

 stitute the pencilled ears of several species of Squirrels. 



The structure of the ear of this animal is stated, by Dr. 

 Horsfield, to present several peculiarities which distinguish 

 it from the other Javanese species. The interior of it is 

 large, naked, and disposed transversely near the extremity 

 of the head, divided in the middle by a continuation of the 

 concha, which separates an extensive meatus auditorius 

 externus from the superior cavity. The lobe is short, 

 linear- oblong, with an inflected margin, and surrounds only 

 the superior portion of the ear opposite to the continuation 



