ON THE FAMILIES OF THE KANIFORM ANURA. 203 



head large, with acuminate muzzle and concave loreal region ; a weak dermal fold on 

 outside of fore-arm and spur on heel ; reddish brown, closely marbled with lighter 

 above; sometimes a median dorsal brown line; sides with numerous vertical brown 

 bars; external surfaces of limbs with broad brown cross-bands; lip spotted. Large. 

 This species is at once noticeable for its subacuminate muzzle, concave front, and 

 extensive palraation. The canthus rostrales are strongly marked and concave, ap- 

 proximated and nearly parallel for a short portion of their anterior extremity. The 

 top of the cranium is concave. Tj'mjianum oval, two-thirds orbit ; eyes prominent, 

 of moderate size, long diameter of fissure twice in distance from anterior border of 

 same to end of muzzle. Skin shagreened above, with broad flat areolje below ; palma- 

 tion before and behind leaving palettes only free; one-fourth of a web inside of inner 

 finger. Incurved limb of series of vomerine teeth short, nearly approaching each 

 other ; choanEB very large, oblique, the inner fissure eight to ten times larger than 

 ostia pharyngea. Tongue longitudinally oval. Heel to end of muzzle : longest finger 

 to groin. No subanal flap. 



Length he;id and body, ......... 



"■ to posterior margin tympanum, .... 



Width head at posterior angle jaws, ...... 



'•' sacral di apophyses ........ 



Length fore-limb, .......... 



" carpus and longest finger, ...... 



'' hind limb, ......... 



" tarsus .......... 



" rest of foot, "........ 



Coloration. — This consists of brown marblings on a pale ground. Two irregular 

 bands converge from the orbits posteriorly, forming an interscapular patch, which is 

 followed by numerous connected blotches to the extremity of the body ; an irregular 

 interocular band and the top of the muzzle also brown. Flanks with numerous 

 narrow vertical brown bands between groin and axilla, which are confluent above, 

 and surmounted by a series of broader ones. Limbs with broad brown cross-bands; 

 the femur with four, which are split behind ; the tibia with four, tarsus with two, 

 metatarsus and toe four. A narrow vertebral brown line from end of muzzle to 

 sacrum; below unspotted. Subanal region white, without black spot above. 



Habitat. Surinam. One female specimen sent to the Academy Natural Sciences 

 by Dr. Charles Hering. 



This species possesses some points of resemblance to Centrotelma geographi- 

 cum, and I suspect it has been confounded with the Osteocephalus I angsdo rffi i 

 by Burmeister. In the mouth of this species, of Phyllomedusa s c 1 e r o d e r m a, and 



Inches. 



Lines. 



3 



11 



1 



3 -25 



J. 



4-75 





10 



2 



1-25 





12-5 



6 



5 



1 



2-5 



1 



6 



