90 BULLETIN 34, UNITED STATES NATIONAL MUSEUM. 



The gular fold or furrow is distinct, not very prominent above; that 

 behind the angle of the jaws is inconspieuous, as is tlie hiteral parotoid 

 furrow. 



There are twelve costal furrows, including the inguinal and axillary. 



The tail is a little shorter than the body and head (measuring from 

 posterior extremity of vent). It is oval in cross-section, widest below, 

 though without any ridge or crest. It is little higher than broad at the 

 anus, but becomes more and more compressed to the tip, the upper and 

 under outlines remaining nearly parallel for a considerable distance. 

 The anal slit is prolonged into a groove, which extends beneath the tail 

 to its very tip. 



The limbs are largely developed and the toes very long. The digits 

 are cylindrical, depressed, without any lateral or basal web. The third 

 finger is longest, then the second, fourth, and first. It is one-third the 

 length of arm from elbow. The fourth toe is longest; then the third 

 (but little shorter), second, fifth, and first ; it is contained about two and 

 one-half times in the length of leg from knee. The expanse of the out- 

 stretched toes is very nearly equal to the distance from snout to the groin. 

 The length of the limbs varjes a little; when extended on the sides they 

 may scarcely meet or considerably overlap. 



The tongue is thick and fleshy, much as in A. punctatum. 



The teeth are in four patches ; the two central in a nearly straight 

 line, or forming in smaller individuals a very obtuse A? the angle ante- 

 rior but not passing the posterior border of the internal nares. The sides 

 of the V are perhaps slightly concave anteriorly. This patch or line 

 extends to the inner nares, and is there continuous with the lateral 

 patches, which are short, nearly straight, about one-fourth the cen- 

 tral patch, and form the posterior border of the inner nares. These 

 are large, far back, and widely separated. 



In alcohol, after long immersion, the specimen is nearly uniform Tight 

 liver-brown, paler beneatli, without any spots. 



Measurements. 



Inches. 



Length from snout to gnlar fold . .70 



Length from snout to groin 2. 5r) 



Length from snout to end of anus 3. 20 



Length from snout to remnant of tail 2. 50 



Width of head. .50 



Length of mouth along median lino 38 



Fore-arm from elbow fi2 



Leg from knee 85 



The specimen from which the i>receding description has been taken 

 is, if not the original upon which Dr. Green's species wa.s founded, at 

 least one collected in the same locality and named by him, having 

 formed part of his collection and presented many years ago by its 

 owner to the Smithsonian Institution. The "light-blue spots" so con- 

 spicuous in fresh specimens have disappeared. 



