474 BULLETIN: MUSEUM OF COMPARATIVE ZOOLOGY. 
Remarks:— The description was made of an adult male that meas-- 
ured one hundred and eight millimeters from snout to vent. 
Habitat:— Widely distributed throughout Central America from the 
Isthmus of Darien to southern Mexico. 
List of specimens examined. 
M.C.Z. oe 
No. mens Ages Sexes Locality Date Collector Remarks 
2723 2 \ ade o& Turbo, Isth. Darien 1871 G.A.Maack Descrip.. 
9585 1 ad. oo # Matagalpa, Nicaragua 1910 W. B. Rich- 
ardson 
9568 1 ad. oo #£Matagalpa, Nicaragua 1910 W. B. Rich- 
ardson 
10773 1. ad. co # £Matagalpa, Nicaragua 1910 W. B. Rich- 
ardson 
10774. 1 ad. oo Matagalpa, Nicaragua 1910 W. B. Rich- 
ardson 
9580 1 ad. & Honduras 1907 E.-C: Post 
9581 1 ad. o& Honduras 1907 .E. C. Post 
AMEIVA UNDULATA UNDULATA (Wiegmann). 
Description:— Adult male; M. C. Z. 7473. Colima, Mexico; 
Barbour collection. 
Rostral forming a trifle more than a right angle behind; nostril 
between the two nasals; anterior pair of nasals in broad contact be- 
hind rostral; frontonasal longer than wide, separated from the loreal 
by the posterior nasal; prefrontals fairly in contact with the first two 
supraoculars; a pair of frontoparietals in contact with the first 
two supraoculars; a pair of frontoparietals in contact with the third 
supraocular for nearly its entire length; three subequal occipitals in 
a transverse row; five and six supraciliaries, the second from the 
anterior end very much larger than the others; three supraoculars, 
the first in contact with the two anterior supraciliaries and loreal; two _ 
posterior supraoculars separated from the supraciliaries by a single 
row of granules; last supraocular separated from the outer occipitals 
by two or three small scales; six and seven supralabials; five and six 
large infralabials; between infralabials and chin-shields a wedge of 
one or two rows of small scales extending anteriorly to the first chin- 
shield; chin and throat covered with large granules becoming larger 
towards the centre, a longitudinal row of four larger ones in the mid- 
region; on the area between the two throat folds two or three rows of 
