VOL. XVI, PP. 59-60 MAY 6, 1903 



PROCEEDINGS 



OF THE 



BIOLOGICAL SOCIETY OF WASHINGTON 



A NEW SPECIES OF FLYING LIZARD FROM SARA 

 WAK, BORNEO. 



BY THOMAS BARBOUR. 



The following species which does not appear to have been 

 previously characterized is one found among a considerable 

 number of Reptiles and Batrachians collected in Borneo. 



Draco gracilis, sp. nov. 



This species approaches Draco cornutus in its general proportions; but 

 it differs from the latter in coloration, squamation, and number of 

 labials. 



Description. Habit slender. Head moderate; length of snout about 

 equal to orbital diameter. Nostril lateral, directed outward. The 

 hind limb pressed forward reaches the fore limb pressed backward 

 at a point about half-way between wrist and elbow. Tympanum naked, 

 with scales encroaching somewhat from the margins; smaller than eye 

 opening. A prominent tubercle on the posterior part of the supraciliary 

 region. A rather small nuchal crest, consisting of a single row of 

 triangular scales. Crown scales, dorsals, and ventrals keeled. The 

 nuchals and scales on temple are very slightly or not at all carinate. 

 There is a row of triangular spinelike scales along each side of the body, 

 just at the base of the wing membrane. The gular pouch is longer than 

 head, and of the thirteen upper labials the last is the largest. 



Color (alcoholic specimen). Dorsal surfaces light greyish brown. Ven 

 tral regions light gray. Neck and throat specked with rather dark 

 brown. Forehead dark brown. A number of blackish spots at the base 

 18 PBOC. BIOL. Soc. WASH. VOL. XVI, 1903. (59) 



