BARBOUR AND NOBLE: LIZARDS OF THE GENUS AMEIVA. 441 



Coloration: — Similar to A. cxsul in ground color but tonality bluer 

 and lighter; no black pencilings on the back; flanks blue-gray much 

 lighter than those of A. cxsul, 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 



