BARBOUR AND NOBLE: LIZARDS OF THE GENUS AMEIVA. 475 



scales, the median row largest, the scales differing in size from those 

 in the middle; under side of the body with eight longitudinal and 

 twenty-eight transverse rows of plates; preanal scales irregular, a 

 marginal pair and two or three anterior scales the largest; on the 

 lower arm a double row of wide antebrachials, outer row the widest; 

 on the upper arm a single row of large brachials continuous with the 

 antebrachials; on the posterior side a single row of large postbrachials; 

 under side of the thighs covered distally with three, proximally with 

 six or eight rows of scales; seventeen and nineteen femoral pores; 

 on the under side of the tibia three rows of shields; upper side of the 

 wrist covered with scales forming a series of longitudinal rows of two 

 or three scales each; inner and outer toe extending to approximately 

 the same distance; tail covered with keeled scales in rings, the scale 

 and the keel being straight or slightly oblique on the sides; about 

 twenty-two scales in the fifteenth ring from the base. 



Coloration: — Dorsal surface dark olive-blue ; on each side of the 

 body a series of indistinct vertical stripes of black, somewhat confluent 

 ventrally and spotted with indistinct blue blotches; ground tone of 

 ventral surface steel-blue washed with straw-color about the anal 

 region and on the under surfaces of legs. 



Remarks: — The description was made of an adult male, the only 

 specimen examined, that measured seventy-four millimeters from snout 

 to vent. 



Habitat: — Apparently confined to southern Mexico. 



Ameiva undulata quadrilineata (Hallowell). 



Ameiva pulchra Hallowell, Proc. Acad. nat. sci. Phila., 1860, p. 483. 

 Ameiva gahbiana Cope, Journ. Acad, nat sci. Phila., 1876, ser. 2, 8, p. 117, 

 pi. 28, fig. 3. 



Description: — Adult female; M. C. Z. 9546. Chinandega, Nicara- 

 gua; 1910; W. B. Richardson. 



Similar to Ameiva u. undulata from which it may be distinguished by 

 the following characters : — a pair of frontoparietals nearly separated 

 from the third supraocular by one or two rows of granules ; three sub- 

 equal occipitals, the median divided longitudinally; last supraocular 

 separated from the outer occipitals by two or three rows of granules; 

 chin and throat covered with small granules, an indistinct band of large 

 ones extending across the middle, in the mid-region a group of eight 

 or ten large scales varying into the others; preanal plates irregular, 

 a longitudinal series of three pairs; on the posterior side of the upper 



