1920.] G. A. Boui.ENGER : Frogs of the Genus Rana. 59 



22. Rana palavanensis. 



Rana palavanensis, Bouleng'., Ann. and Mag. N.H. (6) Xl\', 1894, p. 85, 

 and Proc. Zool. Soc, 1897, p. 230. 



Vomerine teeth in short oblique series just behind the level 

 of the choanae. Bon}^ piominences in front of lower jaw absent. 



Head moderate, moderately depressed, as long as broad, or 

 slightly broader than long; snout rounded, scarcely projecting be- 

 yond the mouth, as long as the eye ; canthus rostralis distinct ; 

 loreal region moderately oblique, slightly concave ; nostril equidis- 

 tant from the eye and from the end of the snout ; the distance 

 between the nostrils equal to or greater than the interorbital 

 width, which is equal to or a little less than that of the upper eye- 

 lid ; tympanum distinct, |- to f the diameter of the eye, ij to i| 

 times its distance from the latter. . 



Fingers moderate, the tips swollen or dilated into very small 

 discs, first as long as or slightly longer than the second, third longer 

 than the snout ; subarticular tubercles moderate. 



Hind limb long, the tibio-tarsal articulation reaching the 

 tip of the snout or beyond, the heels strongly overlapping when 

 the limbs are folded at right angles to the body ; tibia 4 to 4^ times 

 as long as broad i^ to i|f times in length from snout to vent, 

 as long as or slightly longer or slightly shorter than the fore limb, 

 as long as or longer than the foot. Toes moderate, the tips dilated 

 into small but very distinct discs, § webbed, 2 or 3 phalanges of 

 fourth free ; subarticular tubercles moderate ; no tarsal fold ; 

 inner metatarsal tubercle elliptical, flat, I to I the length of the 

 inner toe ; no outer tubercle. 



Skin nearly smooth ; posterior half of upper eyelids warty ; 

 a glandular fold from the eye to the shoulder ; a narrow glandular 

 dorso-lateral fold, beginning behind the upper eyelid. 



Brown or greyish-brown above ; sides of snout below the canthi 

 blackish or dark grey, with some more or less distinct dark vertical 

 bars on the lip ; supratemporal and dorsolateral folds edged with 

 dark brown or black on the outer side ; a dark cross-bar between 

 the eyes and a dark A-shaped interscapular marking usually 

 present ; limbs with regular dark cross-bands. Lower parts whitish, 

 uniform, or throat and breast spotted with brown. 



Males with internal vocal sacs. 



Nasal bones moderately large, separated on the median line ; 

 a small portion of the ethmoid uncovered ; zygomatic branch of 

 squamosal moderately long. 



Eggs large, 8 millims. in diameter in female 36 millim. long 

 from snout to vent. 



