230 [October, 



including hexagonal patches of white; extremities banded with olive, under 

 parts white. Habitat the same. The specimens thus marked are probably the 

 young, and we are inclined to think are, as well as the larger brown-colored 

 specimens, identical with Anolis Sagraei. 



Another specimen of intermediate size, characterized by the same difference 

 in form of the scales and granulations upon the temples, tricarinate scales upon 

 the front and muzzle, and carinated scales upon the back and abdomen, prpsents 

 a coloration very much resembling that of fig. 2, in pi. xiii. of De la Sgra's 

 work, viz., on each side of the body and tail a row of dark-coloied undulated 

 markings, and dark-colored bands upon the extremities ; but the scales upon 

 the head and body in this figure are not represented as carinated. In Sagraei, 

 as before mentioned, the supra-orbitar ridges are represented by Dumeiil 

 and Bibron to be in contact; but in the text of De la Sagra's work, they are 

 represented to be separated by a single row of scales ; in our specimens we find 

 one intermediate row of large scales, or two smaller rows, one of which is more 

 or less imperfect. 



Anolis heterolepis, nob. 



Among the specimens in the collection of the Academy is one which at first, 

 from the triangular markings upon the back, I supposed to be the young of the 

 preceding species, but on a closer examination I find that it differs very materi- 

 ally in the following parliculars : 1st. The snout is evidently less acute, more 

 depressed, and is covered with smaller scales; the scales between the supra- 

 orbitar ridges anteriorly are much smaller, there being but two rows in Sagraei 

 and five in the species now under consideration ; the occipital plate is larger ; the 

 granulations upon the flanks are much smaller and smooth instead of being cari- 

 nated, and the ventral scales are smooth, whereas in Sagraji they are very dis- 

 tinctly carinated. The tail is considerably longer than the head, neck and body, 

 cyclo-tetragonal at base, compressed in the greater part of its extent, quite slender 

 posteriorly, with transverse rows of larger scales resembling verticillae, about a 

 line apart; the three or four rows of scales beneath much larger than the others 

 and strongly carinated. The present species differs also in a marked manner 

 from Sagraei in having the plate immediately beneath the first infra-labiaf and 

 behind the mental, much smaller,* this plate being remarkably large in Sagraei 

 and in having the scales upon the chin between the inframaxillary rows of scales 

 much smaller. We propose for this species the name of Anolis heterolepis. 

 It is at once distinguished from angusticeps by the long and narrow head of the 

 latter. 



Coloration. Light pea green above, with triangular spots of a deeper shade 

 on each side of the median line of the back, the apices t'luching each other; 

 chin and throat marked with green, presenting in the latter region irregularly 

 longitudinal lines ; somewhat similar markings upon the occiput, and a green 

 colored blotch upon each temple ; under parts of body and extremities white with 

 a tinge of green, more marked upon the abdomen. 



Dimensions. Length of head 6^ ''nes ; greatest breadth SJ ; length of neck 

 and body to vent 13 lines; of tail 2 inches 9 lines. Total length 4 inches 4.} 

 lines. 



Habitat. Cienfuegos, Cuba. One specimen, presented by Capt,, Baker. 



Adienda. In comparing the different species of Anolis above described viith 

 each other, the following remarks may aid in their future determination : 

 equestris, camitleonides, Edwardsii and Carolinensis, are so distinctly charac- 

 terized as to be readily recognized from the descriptions of authors, more 

 especially of Dumerii and Bibron, the admirable descriptions of Bibron of these 

 and the many other species throughout the work being beyond all praise. In 

 xericeus the middle dorsal rows of scales are not sensibly larg r than the others, 

 and there is no larger row of scales along the middle line of the tail above ; the 



*This plate is also small in A. sericeus. 



