AMEIVA. 23 
7 inches long (without tail), is, without any question, the same species; yet its coloration 
is very different. Instead of a light vertebral line, a series of bluish-white spots occupies 
the middle of the back; similar spots, edged with black, and arranged in irregular trans- 
verse series, ornament the flanks, very faint traces of lateral light longitudinal bands 
being still visible. The head and anterior part of the trunk and fore limbs are imma- 
culate. Lower parts yellowish white, the scutes of the two outer rows black, each with 
a large bluish-white spot in the centre. Upper side of the hind limbs and tail with 
bluish-white specks. 
This species ranges from Montevideo (Darwin), through Paraguay, Brazil, the Guianas 
into the southern part of Central America, and is one of the most common Lizards of 
the Tropical-American Region. 
2. Ameiva gabbiana. 
Ameiva gabbiana, Cope, Journ. Ac. N. Se. Philad. viii. 1876, p. 117, t. 28. fig. 3 (head). 
Hab, Costa Rica, Old Harbour (Cope). 
Abdominal scutes in eight longitudinal series; preeanal region protected by a large 
round scute, with two or three smaller ones in front. Scales in the middle of the throat 
but little larger than the others; anterior margin of the collar with a transverse row of 
large scales. Nostril between two scutes ; supraorbitals three. Humeral scutes in one 
series. ‘Two lateral light bands separated by a darker shade than that of the dorsal 
interval, and crossed, like the side below the lower line, by black bars. Below 
immaculate, or with black spots on the gular region.” 
3. Ameiva undulata. 
Cnemidophorus undulatus, Wiegm. Herpet. Mex. p. 27 ; Salvin, Proc. Zool. Soc. 1860, p. 454. 
Ameiva vulgaris, Dum. & Bibr. iv. p. 100. 
? Ameiva pulchra, Hallow. Proc. Ac. N. Sc. Philad. 1860, p. 483 ; Cope, ibid. 1862, p. 62. 
Ameiva undulata, Cope, Proc. Ac. N. Sc. Philad. 1862, p. 62; Bocourt, Miss. Sc. Mex., Rept. 
p- 254, t. 20. fig. 7, and 20s. fig. 1; Sumichrast, Bull. Soc. Zool. 1880, p. 177. 
Hab. Muxico, Oaxaca (Bocourt), Vera Cruz (Cope), Isthmus of Tehuantepec (Sumi- 
chrast); GUATEMALA, Peten and Isabal (Bocourt), Duefias, Coban, and Lanquin 
(Salvin); Hoypuras (Brit. Mus.); Sanvabor (Bocourt); Nicaraeua (Hallowelt) ; 
Costa Rica, Irazu (Brit. Mus.). 
Abdominal scutes in eight longitudinal series; the preanals of small size, in 
several transverse rows. A patch of enlarged scales occupies the middle of the throat, 
and scales of similar size occupy the anterior margin of the collar. Nostril between 
two scutes; supraorbitals three. Humeral scutes in one main series, accompanied 
by some smaller scutes, but separated by a granular interspace from the pectoral 
scutes. 
