BARBOUR AND NOBLE: LIZARDS OF THE GENUS AMEIVA. 441 
Coloration: — Similar to A. exsul in grownd color but tonality bluer 
and lighter; no black pencilings on the back; flanks blue-gray much 
lighter than those of A. exsul, and surmounted by a dark brown band 
which is somewhat broken into confluent spots; pale dapplings more 
numerous than in A. exsul, and covering the back, tail, and legs. 
Remarks:— This form is so similar to Ameiva exsul that the dis- 
tinguishing characters only are indicated in the description which was 
made of an adult male that measured ninety-six millimeters from 
snout to vent. As Stejneger (Rept. U. S. nat. mus. for 1902, 1904, 
p. 618) has pointed out this form as more readily distinguished from 
_ A. exsul by its numerous pale mottlings, than by any scutation char- 
acters. Only the specimen described was examined. 
Habitat:— Confined to the small island of Mona. 
AMEIVA WETMOREI Stejneger. 
Stej., Proc. Biol. soc. Wash., 1913, 26, p. 69. 
Description: —'Type U. S. N. M. 49731. Guanica, Porto Rico; 
May 20, 1912; A. Wetmore. 
““Nostril between the two nasals; anterior nasals broadly in contact 
behind rostral; frontonasal broader than long, in contact with the 
loreal; prefrontals broadly in contact; frontal pentagonal, in contact 
with the first and second supraoculars, not touching third; a single 
hexagonal frontoparietal broadly in contact with the third, very 
narrowly with the second supraocular; three occipitals; five supra- 
ciliaries; three supraoculars, the first in contact with the first supra- 
ciliary, the others separated from the supraciliaries by a single row 
of fine granules; last supraocular in contact with outer occipitals; 
seven supralabials; six large infralabials; between infralabials and 
chin-shields posteriorly a single line of flat scales, the anterior ones 
not reaching the first pair of chin-shields; chin and throat covered 
with small scales or granules diminishing in size posteriorly; mesop- 
thychium with a median patch of enlarged scales, the larger ones 
about four times the size of the chin granules; under side of the body 
with eight longitudinal and thirty-five transverse rows of rectangular 
plates; one large preanal plate, preceded by one much smaller, and 
this one-by two still smaller ones placed transversely; on the lower 
arms two rows of large antebrachials, separated from the much smaller 
single row of brachials by small scales; on the lower edge of the upper 
arm a single series of enlarged postbrachials; under side of the thighs 
