2. XIPHOCERCUS. 9 
1. Xiphocercus valenciennesii. 
Anolius valenciennii, Gray, Cat. p. 206. 
Anolis valencienni, Dum. § Bibr. p. 181; A. Dum. Arch. Mus. viii. 
pl. xix. fig. 2; Bocourt, Miss. Sc. Mev., Rept. pl. xiv. fig. 1. 
Dactyloa (Xiphocercus) valenciennii, Fitzing. 1. ¢. p. 67. 
Placopsis ocellata, Grosse, 1. ¢. 
Anolis leucocephalus, Hallow. Proc. Ac. Philad. 1856, p. 226. 
Xiphocercus valenciennii, Cope, /. ¢. 
Head large, nearly twice as long as broad, nearly twice as long 
as the tibia; forehead plane, covered with very large symmetrical 
smooth shields; shields of the supraorbital semicircles in contact 
between the orbits or separated by one row of scales; occipital 
much longer than broad, much larger than the ear-opening, in 
contact with the supraorbital shields or separated by one series of 
scales; five to eight large smooth supraocular scales, separated from 
the supraorbitals by one row of granules; canthus rostralis sharp, 
canthal scales four or five; nostril just above the canthus rostralis ; 
eight or nine upper labials to below the centre of the eye; ear- 
opening very small. Gular appendage very large in the male, ex- 
tending beyond the thorax, smaller, but nevertheless well developed, 
in the female; the greater portion of this appendage perfectly 
naked; gularscales smooth. Body strongly compressed, not crested, 
covered with flat smooth roundish granules, largest on the flanks, 
where they are separated by minute grains, subimbricate on the 
belly. Limbs rather short, the adpressed hind limb reaches the 
axilla or the shoulder ; twenty-three to twenty-six lamelle under 
phalanges 11. and 111. of the fourth toe. Tail strongly compressed, 
with a low crest or deuticulation above; its length does not much 
exceed that of head and body. Male with enlarged postanal scales. 
Cream-coloured or pale brown above, with more or less distinet 
brown markings; lower surfaces white, the belly sometimes vermi- 
culated with brown; the skin of the gular appendage grey (in 
spirits). 
Total length .......... 191 millim. 
Head oe ot oa Week wed 27 oy 
Width of head ........ 16 5 
Ody 3a ins oi aiaisiotng iia Sy arr 
Fore limb ..........6- 28 ys 
Wc Kate i Vb0r1 peer eeePnenee error 44, 
PED oy saearssoaarnn adie IS a; 
Parl) Gade, eee 107_—so,, 
Jamaica, 
a-b, ce, f. d,9,& hgr. Jamaica. -P. H. Gosse, Esq. [P.]. (Types 
of Placopsts ocellata.) 
g Se Jamaica P 
