HERl'ETOLOGY OF PORTO RICO. 649 



Dimensions. 



mm. 



Total length 182 



Tip of snout to vent 66 



Vent to tip of tail 116 



Tip of snout to ear 19. 5 



Tip of snout to center of eye 13 



Width of head 13 



Fore leg 30 



Hind leg 45 



Female and young differ in the absence of dewlap and cervico-dorsal 

 folds, the former also of postanal plates; the tail is more cylindric and 

 the spinous upper edge less pronounced. 



Yd fiat Urn. — As usual great variation is found in the size and conse- 

 quent number of the head scales. The supraorbital semicircles may 

 be in contact, though I have never seen more than one shield on each 

 side meeting, but just as often they are separated entirely by a single 

 series of scales. The supraorbitals again are separated from the 

 occipital usually by three, often \>y two, but veiy rarely by four 

 scales. The loreal rows are mostly five, often four, more rarely six. 

 There are usually six supralabials anterior to the center of the e}^e, 

 sometimes only five, occasionally seven. The keeling and wrinkling 

 of the upper head shields and scales are also subject to considerable 

 variation, being usually less pronounced in youth. 



Colors of living animal. — Adult male, U.S.N.M. No. 26860 (L. S. 

 No. 9026). Catalina plantation, about 890 feet altitude; February 22, 

 1900. Iris, dark brown; eyelids, abruptly flesh-colored; general color, 

 bright emerald green witliout markings; abdomen, underside of hind 

 legs, and thick basal portion of tail below, pale glaucous green; ter- 

 minal third of tail, black, tip, pale; dewlap, gamboge yellow; scales, 

 pale }dlow, no thickened edge. 



When handled the animal changed from green to wax-yellow with 

 numerous dusky spots and marblings on body and crossbars on tail, 

 as well as longitudinal dusk} r stripes on throat; when reassuming its 

 normal color the dusky markings disappeared before it turned green. 



Another specimen (No. 26855, L. S. No. 9022), from same locality, I 

 described as follows: General color, changing from bright parrot- 

 green to almost dusky olive y ellow, with faint indications of brownish, 

 dusky marblings on back; terminal third of tail, blackish, extreme 

 end pale; belly, underside of thighs, and thick part of tail, verging 

 on pale glaucous green; throat and dewlap, wax-yellow; pinkish 

 edges to the eyelids; iris, very dark brown with a dark steel-blue 

 ring; inside of mouth, pale yellowish. 



An adult female (No. 26867), same locality, is described in the note- 

 book as like No. 26866, but with a very small dewlap not differentiated 

 as to color. No soft cervico-nuchal or dorsal crests. The male has a 



