518 



PROCEEDINGS OF THE NATIONAL MUSEUM. 



VOL. 41. 



half of greatest width and about one-third of the distance between 

 end of snout and gular fold. Body depressed, distance from axil 

 to groin 2.1 in total length (exclusive of tail). Tail very long, 

 1.03 times length of head and body (to behind anus), very strongly 

 compressed throughout, but more so distally, becoming very thin 

 at the end. Digits relatively long; distance from wrist to tip of 

 longest finger contained in length of head and body 10 times; dis- 

 tance from ankle to tip of longest toe in length of head and body 

 7 times. 



The ground color is brown, shading from dark brown along the 

 dorsal stripe to plumbeous on the flanks. There is a well-defined 

 dorsal stripe extending from the end of the snout along the vertebral 

 region to the distal fourth of the tail. This stripe is narrow on 

 the snout, expands into a large triangular spot behind the eyes^ 

 contracts again to form a medium wide stripe on the body, and is 

 narrowly restricted to the dorsal margin of the tail, becoming obscure 

 on the distal fourth. There are faint evidences of pale blotches on 

 the Hmbs (see notes on parat3rpes). 



Additional notes on faraty^es. — The other specimens agree closely 

 in proportions (see measurements) and color with the type. They 

 differ in that the pale spots on the limbs are more distinct; there is 

 a small round pale spot above each eye, and the occipital expansion 

 of the dorsal stripe incloses more or less completely a dark brown spot. 



Measurements. 



Snout to anus 



TaU 



Snout to eye 



Snout to gular fold 



Snout to axil 



Axil to groin 



Width of head 



Between anterior end of orbits 



Nostrils 



Humerus 



Elbow to t i p of longest finger . 

 Wrist to tip of longest finger. . 



Free part of longest finger 



Thigh 



Knee to tip of longest toe 



Anlile to tip of longest toe. . . . 

 Free part of longest toe 



U.M.M. 



41971. 



mm. 



51 



Broken. 



4 



12 



18 



21 

 8 



5.5 

 3.5 

 5.5 



11 

 6.5 

 3.5 

 5.5 



13 

 7.5 

 4.75 



U.S.N.M, 



mm. 

 52.5 

 54 



4 



11.75 

 17.5 

 24.5 



7.5 



5.5 



3.5 



6 

 11.5 



5.25 



3 



5 

 13.5 



7.5 



5 



U. M. M. 



41972. 



mm. 

 53 

 50 



4 



12.5 

 16.5 

 27.5 



8 



5.5 



3.5 



5.75 

 10 



5 



3 



5 

 13 



7 



4.5 



25 



U.S.N.M. 

 48599. 



51 



4 



11.5 

 17 

 21 



7.5 



5 



3.5 



5.5 

 10.5 



5 



3 



5.5 

 12.25 



6.75 



4.5 



Remarks. — A. stejnegeri is, with little doubt, most nearly related 

 to A. macrodactylum. It may easily be told from the latter by the 

 longer and more compressed tail. The anterior digits also appear 

 to be longer than in macrodactylum. In the specimens of the latter 

 examined the distance from the wrist to the tip of the longest finger 

 is contained in the length of the head and body 12.6 and 12.7 times 

 as compared with 9.27, 9.7, 10, and 10.6 times in A. stejnegeri. 



