HERPETOLOGY OF PORTO RICO. 653 



The dorsul folds, espociully the one on the nape, very .strongly 

 developed. 



l)im)'ii><iotiK. 



mm. 



Total length 125 



Tip of snout to vent 44 



Vent to tip of tail - ST 



Ti]) of snout to ear 1 M. 5 



Tip of snout to center of eye it 



Width of head S 



Fore leg 20 



Hind leg 'M 



Female and youiuj ditter in the absence of dewlap and eervieo-dorsal 

 folds, the former also of postanal plates. 



Variation. — The variation in the head seutellation is as great as in 

 the allied species. Thus, while in the specimen described the supra- 

 orbital semicircles are completely separated by a row of scales, in many 

 others they are in contact, in some cases e^'en extensively so, as, for 

 instance, in No. 25532, in which two pairs of the semicircle scales are 

 broadl}^ in contact. In the large series before me they are separated 

 in about one-half the specimens. In none is there more than one scale 

 row between the semicircles. The single large shied d separating the 

 supraocular semicircle from the superciliary ridge just in front of the 

 supraocular granules is remarkably constant, it being di\'ided in two 

 specimens only, namely, Nos. 26849 and 20990, and in these only on 

 one side. 



The keels on the scales covering the arms are often so feeble as to 

 appear entirel}' al)sent. 



Colors of IJvlug animal. — Adult male. U.S.N.M. No. 2(;soT (L. 

 Stejneger No. 9007). Pueblo Viejo, near San Juan, February 18, 

 1900. Iris dark brown; general color above light yellowish gray, 

 much lighter l)elow; the saddle-shai)ed spots on ])ack very pronounced 

 blackish ]>ro\vn l)ordered by whitish; on sides an irregular series of 

 burnt- uml)er brown spots, also with white margins; throat and adja- 

 cent portions of underside of neck of a delicate pale l)luish green; 

 skin of the dewlap deep orange, the distant scales canary yellow, those 

 on anterior edge moi'e whitish. 



Another male (No. 2r)S(;5. L. S. No. !»02T, Catalina plantation, Feb- 

 ruary 22, 1900). — General color a])ove grayish drab, the saddle spots 

 blackish brown, and indetinite blotches and spots on sides cinnamon; 

 edge of eyelids pale yellowish; a pale semilunar stripe on keels of 

 sul)oculars; dewlap orange, the thickened edge pale greenish white; 

 otherwise as No. 26S07. 



Habitat. — The saddle-spotted anolis is not exclusively Porto Rican 

 inasmuch as it is also an inhalutant of the Virgin Islands, specimens 

 being known from St. Thomas, Tortola, Just v. Dy ck, and Vieques. 



