658 REPORT OF NATIONAL MUSEUM, 1902. 



labials, etc. The number of rows of clearly differentiated imbricate 

 keeled scales on the back is also variable to some extent, but they 

 always form a narrow zone along the median line of the back. 



Colors of living animal.- — Adult male, Cat. No. 26874 (L. S. No. 

 9023), Catalina Plantation, El Yunque, 890 feet altitude, February 21, 

 1900. General color bright yellowish olive-green, sides of back and 

 flanks with minute black spots, larger on back, but none along the 

 median area occupied by the enlarged scales; from under eye through 

 ear to groin a broad and very distinct line of canary yellow, brightest, 

 nearly lemon yellow, on middle of flanks; a black spot immediately 

 behind e} T e, but no postocular band; underside paler, more buffy; 

 immediately below the lateral yellow band the color is more olive, 

 with minute black specks; hind legs posteriorly suffused with ferru- 

 ginous; tail crossbarred with dusky; dewlap yellowish, gradually 

 deepening to orange toward the edge; eye dark brown, nearly black, 

 with a faint silvery edge to the iris; eyelids edged with whitish. 



Another adult male (No. 26876, L. S. No. 9030), caught the follow- 

 ing day on the same plantation, was in every respect similar to the 

 above, but in addition the temples and the dorsal surface of the neck 

 were densely speckled w r ith bluish white dots, the equivalent of the 

 black dots on the back. 



The female, No. 26875, U.S.N.M. (L. S. No. 9029), same locality 

 and date, was above dark olive-brown, paler on sides below lateral 

 line; the latter straw-yellow, beginning on supralabials below nostril 

 through ear to groin; color of sides gradually fading into pale yel- 

 lowish on belly; edge of eyelids whitish. Scarcely any indication of 

 a nuchal fold or a dewlap. 



The specimens (6) which I collected at Utuado (altitude about 500 feet) 

 on April 6 had the lateral stripe pure white and not yellow. The live 

 colors of one were noted on the spot as follows: 



No. 27157, U.S.N.M. (L. S. No. 9063). Head and a broad stripe 

 down the middle of the back, olive-brown; sides of back abruptly 

 much darker, nearly blackish, bordered below by a pure white band 

 extending from snout over labials through ear to groin; below this 

 olive-brown dusted over with black; underside whitish; behind eye- 

 opening a conspicuous black spot; dewlap orange with white scales. 



After death the dorsolateral dark band fades and is replaced by num- 

 erous minute black dots, while the neck above is dusted over with 

 minute bluish white dots. In the large .specimens the outline of the 

 median dorsal band in life is straight, while in the young ones caught 

 to-day [April 6] it is strongly scalloped. In all six the lateral stripe 

 is pure white, even in one which was just shedding, and extends to the 

 groin. All the individuals seen were colored like these. 



At Adjuntas (altitude about 1,400 feet) the specimens collected and 

 observed on April 13 had the lateral stripe, which was distinctly 



