70 Proceedings of the Biological Society of Washington. 



Ameiva wetmorei sp. nov. 



Diagnosis.— Eight rows of ventral p]ates; caudal scale* oblique, smooth; 

 three occipitals; three supraoculars; fronto-parietals united. 



Habitat. — Porto Rico. 



Type-specimens. — Cat. No. 49,731, l T . S. National Museum; Guanica, 

 Porto Rico, above Rio Loco, May 20, 1912; Alex. Wetmore, collector. 



Description of type specimen. — Nostril between the two nasals; anterior 

 nasals broadly in contact behind rostral; fronto-nasal broader than long, in 

 contact with nasals, loreal and prefrontals; prefrontals pentagonal, broadly 

 in contact ; frontal pentagonal, in contact with first and second supraoculars, 

 not touching the third, a single, hexagonal fronto-parietal broadly in con- 

 tact with third and very narrowly with second supraocular; three occipitals, 

 the outer two very large, squarish, the median one long and narrow, almost 

 rectangular; five superciliaries ; three supraoculars, the first in contact with 

 first superciliary, the others separated from the superciliaries by a single 

 row of line granules; last supraocular in contact with outer occipital; 

 loreal undivided; seven supralabials. first in contact with posterior nasal 

 only, second with posterior nasal and loreal, third largest, fifth and sixth 

 in contact with a long subocular; temples with small, flat, irregular 

 scales ; mental followed by a large, unpaired postmental ; six large infra- 

 labials, third largest ; four pairs of chin-shields, first pair in contact, sec- 

 ond pair half separated by granules of chin; between infralabials and 

 chin-shields posteriorly a single line of flat scales, the two posterior ones 

 large, the anterior small, not reaching first pair of chin-shields ; chin and 

 throat covered with small scales or granules diminishing in size pos- 

 teriorly; mesopthychium with a median patch of enlarged scales, the 

 larger ones about four times the size of the chin granules; hack, sides, 

 and upper surface of limbs covered with granules which are slightly en- 

 larged into small hexagonal scales on the median line of the back; under- 

 side of body with eight longitudinal and thirty-five transverse rows of rec- 

 tangular plates, the outer row less than one-half the size of the next one; 

 one large preanal plate, preceded by one much smaller, and this one by 

 two still smaller placed transversely; on the lower arm two rows of large 

 antebrachials, separated from the much smaller single row of brachials by 

 small scales, on the lower edge of the upper arm a single series of' en- 

 larged plates; underside of thigh covered with two series of large scales or 

 plates and three smaller ones ; thirteen or fourteen femoral pores; under- 

 side of tibia covered entirely across by three plates, of which the upper is 

 the largest and larger than the other two together ; upper side of wrist with 

 three series of enlarged plates; fifth (outer) toe extending far beyond the 

 first (inner) almost to the claw of the second ; tail covered with smooth 

 scales in rings, the scales being oblique with parallel sides, except the 

 median row, which is wedge-shaped; about twenty-two scales in the fif- 

 teenth ring from the base. Coloration (in alcohol) above dark brownish 

 olive with seven distinct greenish white longitudinal lines, the median 

 one somewhat wider than the others and starting from the tip of the snout 

 while the others originate in front of the eye, and con tinning some distance 



