76 BEPTILES. 



muzzle, rounded in front ; loreal region concave ; nostril prominent, 

 oval, partly on the canthus rostralis, near the end of muzzle ; eye 

 very large ; tpnpanimi small, circular, about one-fifth of eye. Skin 

 of the upper parts covered with very small granular tubercles ; thi'oat, 

 chest, and under side of legs smooth ; belly granidar. Fingers 

 slender, with broad elliptic disks and small subarticular tubercles, 

 quite free ; fo-iu-th longer than second, first with a thick swelUng at 

 the inner side. Toes moderate, with moderate disks and small sub- 

 articular tubercles, so broadly webbed that a part of the disks is in 

 contact ■ft'ith the membrane ; the fifth toe is hardly longer than the 

 thu'd, and reaches to the pemdtimate phalanx of the fourth ; at 

 the base of the fii'st toe a very small tubercle. Cleft of mouth large ; 

 palate between the eyes very narrow, with a groove on each side ; 

 inner nostiils and eustachian tubes moderate ; tongue elongate, 

 broader, free and deeply notched behind. In the males on each side 

 of the tongue near the angle of mouth, a moderate sUt for the ex- 

 ternal vocal sacs, situated beneath the angle of mouth. Sacral ver- 

 tebra not dilated. Length of body 1|-" ; length of hinder extremity 

 3" ; length of fi'ont extremity 1-1" ; length of fourth toe |-" ; length 

 of third finger |^". 



6. Ixalus guttatus. (Plate IV. fig. D.) 



Disks of fingers rather large, toes entirely webbed ; upper parts 

 thickly covered with granular tubercles ; miizzle rather elongate, 

 pointed ; brown above, with large dark brown spots. 



a. Adult male. Borneo. From Mr. Lowe's Collection. 



Description of the specimen. — Similar to the preceding species. 

 Habit slender ; head elongate, with rather convex crown and flat 

 forehead ; canthiis rostralis angular, loreal region concave ; muzzle 

 prominent, with a roimded upper edge, and obliquely trancated in 

 front ; nostril prominent, oval, partly on the canthus rostralis, near 

 the end of muzzle ; eye veiy large ; tjTnpanum small, circular, about 

 one-fifth of eye. Skin of the upper parts thickly covered with rather 

 prominent tubercles, rather larger on the sides ; throat, chest and 

 under side of legs quite smooth, beUy finelygranular. Fingers slender, 

 quite free, with large broad elliptical disks ; foiuth finger longer than 

 second; first wdth a thick swelling at the inner side. Toes moderate, 

 with moderate disks and small subarticular tubercles, as broadly 

 webbed as in the pi-eceding species ; fifth toe conspicuously longer than 

 thii'd, reaching a little beyond the base of the penultimate phalanx of 

 the fourth ; metatarsus with two veiy small tubercles. Cleft of mouth 

 large, longer than broad ; palate between the eyes very naiTow, with 

 a groove on each side ; inner nostiils and eustachian tubes moderate ; 

 tongaie elongate, broader, free and deeply notched behind. Brown 

 above, -ndth large rounded, sometimes confluent, dark brown spots ; 

 legs Avith darker cross -bands ; hinder sides blackish brown, with a 

 few lighter small spots ; web between the toes black. Length of 

 body 11" ; length of anterior extremity f " ; length of posterior 

 extremity 2i". 



