HERPETOLOGY OF PORTO RICO. 



647 



List of specimens of Aim/is monensis. 



ANOLIS EVERMANNI/i new species. 



Diagnosis. — Dorsal scales granular or tuberculated, juxtaposed, 

 slightly larger than the laterals, the median series not differentiated 

 from the others, all much smaller than ventrals; tail slightly com- 

 pressed, with an upper median series of enlarged keeled scales form- 

 ing a serrated edge; digital expansion strongly developed; occipital 

 shield nearly as large as the ear opening, separated from supraorbital 

 semicircle by two or three scale rows; semicirculars in contact or sep- 

 arated by one row of scales; tibia less than length of head from tip of 

 snout to ear opening, but more than two-thirds this distance; width 

 of head as great or greater than distance from tip of snout to center 

 of eye; granules on supraocular disk continuous with those on the 

 eyelids across the posterior half of the superciliary ridge. 



TyjM.—^o. 26855, U.S.N.M. Catalina plantation, Porto Eico, 890 

 feet altitude; collector, L. Stejneger. 



Habitat. — Porto Rico. 



Inscription. — Adult male, U.S.N.M. No. 26855; Catalina planta- 

 tion, about 890 feet altitude; February 21, 1900. Top of head with two 

 diverging frontal ridges, disappearing before reaching the nostrils, 

 and inclosing ;i frontal hollow; head scales keeled or wrinkled; rostral 

 low, much narrower than the mentals; seven narrow scales in a row 

 between the nostrils; one shield of each supraocular semicircle in con- 

 tact, the others separated by one scale; occipital somewhat smaller 

 than ear-opening, separated from the supraocular semicircles by three 

 or four rows of scales; supraocular disk consisting of ten or twelve 

 polygonal keeled shields, separated from the semicircle by one row 



"Dedicated to Prof. B. W. Evermann, in charge of the V . S. Fish Commission 

 expedition to Porto Rico. 



