BARBOUR AND NOBLE: LIZARDS OF THE GENUS AMEIVA. 463 
spots confluent and forming irregular bars and triangles; sides of body 
with a series of whitish spots arranged in vertical rows, each spot 
surrounded with black; these black areas somewhat confluent into 
vertical rows; on each flank the trace of a white stripe running from 
the thighs only part way the length of the abdomen; two blackish 
stripes on each side of the tail; ground color of ventral surface straw- 
color tinged with bluish; gular and chin region sprinkled with black, 
outer ventrals heavily spotted with the same color. 
Variation: — This species and its several races vary considerably 
in both scutation and coloration. As mentioned (p. 462) the rows 
are not sharply defined; the characters blend one into another. The 
sexual differences are not very constant. In general a female is 
browner and has not as many confluent black spots on its upper sur- 
face. None of the variations of scutation seem to be sexual. A 
young female (same data as above) falls within the scutation varia- 
tions but its coloration is rather distinctive. On each side of the body 
there is a wide black stripe margined with white, running from the eye _ 
half way down the tail. No black spots are to be seen on the upper 
surface of the body or head, but a few dark mottlings are found below 
the black stripes. The under surface is pale blue varying to straw- 
color; there are no black spots on the gulars. 
Remarks:— The description was made of an adult male measuring 
one hundred and eighteen millimeters from snout to vent. Old males 
often grow much larger than this specimen. 
Habitat:— Widely distributed over the northeastern part of South 
America from the Demerara River in British Guiana as far south as 
Bahia, Brazil, inland along the Amazon to as far west as the Madeira 
River. | 
List of specimens examined. 
No. of 
M.C.Z.  speci- 
No. mens Ages Sexes Locality Date Collector Remarks 
6077 2 ad.& both Paramaribo, Dutch 1886 W.B.Rich- Topotype 
yg. Guiana ardson Descrip. 
1169 2 ad.& both Para, Brazil 1862 J. C. Fletcher 
h. g. 
5533 ean oo "Para, brgzil Bought 1886 
5536 i pane. 48 o = Para, Brazil Bought 1886 
5531 2 ee. co Para, Brazil Bought 1886 
1014 ee. | | Pata, Brazil 1859 C. Cooke 
& yg. 
2174 read. co Mana, F. Guiana Bought 
2? 1 ‘ad. o Para, Brazil Wm. Knight 
