464 BULLETIN: MUSEUM OF COMPARATIVE ZOOLOGY. 
No. of 
M.C.Z. speci- ; 
No. mens Ages Sexes Locality Date Collector 
3361 1 h. g. Q Santarem, Brazil 1865, 6 L. Agassiz 
2608 4 ad. both San Gongalla, Brazil 1865, 6 L. Agassiz 
2781 1 ad. rot Santarem, Brazil 1865, 6 L. Agassiz 
3395 1 ad. ‘es Brazil 1865, 6 L. Agassiz 
1158 1 ad. of Villa Bella, Brazil 1865, 6 L. Agassiz 
2624 1 ad. op Silva Lake, Brazil 1865, 6 L. Agassiz 
2632 1 ad. Si Maués, Rio Ma- 1865, 6 L. Agassiz 
deira, Brazil i 
2907 vs ad. fot Rio Puty, Brazil 1865, 6 L. Agassiz 
2888 1 ad. ot Para, Brazil 1865, 6 L. Agassiz 
3308 1 ad. Q ? 1865, 6 L. Agassiz 
2813 Guede rs - re ¢ Santarem, Brazil 1865, 6 L. Agassiz 
3314 i ad. 2 Santarem, Brazil 1865, 6 L. Agassiz 
3311 2 ad. both Tajapurt, Brazii 1865, 6 L. Agassiz 
U. of M. 
43961 1 ad. rot Tumatumari, British 1912 E. B. Wil- 
Guiana liamson 
AMEIVA AMEIVA BILINEATA, subsp. nov. 
Description:— Adult male; Typr Mus. of Zodél., Univ. Mich. 46142. 
Dunoon, Demerara River, British Guiana; August 24, 1914; A. G. 
Ruthven. 
Similar to Ameiva a. ameiva in scutation but between A. a. petersii and 
A. a. melanocephala in coloration; ground color of dorsal surface dark _ 
olive-blue; a few indistinct black blotches on the head forming on the 
body two parallel rows from the shoulders to the thighs; on each side 
of the body a broad stripe of dark brown, the lower margin of which 
is indistinct because of the dark flanks; a series of white spots more 
or less regularly arranged in ventral rows covering the sides of the body 
and the outer ventrals; similar but bluish spots covering the sides of 
the thighs; under surface pale blue of a low intensity; throat sprinkled — 
with a few black spots extending partly over the sides of the head. 
V ariation:— Females, for example U. of M. 46150 (same data as — 
above), are readily distinguishable from the males by their browner 
tonality, by a distinct lateral band of dark brown and by the absence 
of white spots on the lower flanks. Instead of the spots there is a 
series of indistinct milky bars somewhat confluent especially just 
below the broad lateral band where they form a white margin for a 
part of its length. About the anal region and on the femoral pores 
there is a delicate salmon blush, a distinctive character in two of the — 
three females examined. 
