BARBOUR AND NOBLE: LIZARDS OF THE GENUS AMEIvA. 473 
Remarks: — The description was made of an adult male that 
measured one hundred and thirty-one millimeters from snout to 
vent. 
Habitat:— Only known from near the city of Panama where it is 
found with Ameiva a. praesignis in the savannah of Panama. 
AMEIVA FESTIVA (Lichtenstein). 
Description:— Adult male; M. C. Z. 2723. Turbo, Isthmus of 
Darien; 1871; G. A. Maack. 
Related to Ameiva ruthveni from which it may be distinguished by 
the following characters: — frontonasal separated from the loreal by 
the posterior nasal; last supraocular separated from the outer occi- 
pitals by four or five rows of granules; no distinct band of enlarged 
gulars extending across the throat but all diminishing in size from the 
centre where there is a group of six or eight very large scales, one being 
four or five times larger than any of the other scales; preanal plates 
in a triangular group of three large rotund plates, anterior largest; 
postbrachials in a single row of very large scales; nineteen and twenty 
femoral pores; tibial shields in only two rows of very large plates, 
those of the outer largest; upper side of the wrist covered with six 
or eight subequal scales; the whorls of caudal scales not raised later- 
ally so strongly as those of Amevwva ruthveni. 
Coloration: — Although somewhat faded, the coloration seems to 
be distinctly different from that of A. ruthvenc; dorsal surface olive- 
brown, two:irregular black bands running the length of the flanks, the 
lower border of these bands strongly notched; a narrow somewhat 
broken band of olive-gray running down the middle of each of these 
bands; ventral surface blue-gray tinged with yellowish; two or three 
longitudinal series of dark brown spots on the ventrals; the outer 
spots very irregular and attenuated; shields of the under side of thighs 
bordered partly or wholly with dark blue-gray. 
Variation: — The series of eight adult males from several localities 
show a considerable degree of variation in coloration. One specimen, 
M. C. Z. 9581 (from Honduras, collected in 1907 by E. C. Post) has a 
very wide stripe of olive down the middle of the back, making the 
lateral bands proportionally narrower than those of the specimen 
described. In another specimen M. C. Z. 9568 from Nicaragua the 
same general pattern as the typical one is present but the tonality is 
much darker, the ground color being a very dark olive-blue. The dark 
lateral stripes are not at all olivaceous. There are two, instead of 
one, bright bluish gray stripes on each side. 
