396 TELIDZ. 
granules ; two longitudinal rows of large imbricated transverse gular 
shields; three collar-shields. Dorsal scales very large, slightly 
rounded posteriorly, imbricate, a little oblique, with strong keels 
forming straight continuous lines along the back; they form eight 
longitudinal series, and, including the nuchal scales, which are more 
irregular and feebly keeled, thirty transverse series ; lateral scales 
much smaller, feebly keeled, forming rather irrregular transverse 
series. Ventral plates large, in six longitudinal and twenty trans- 
verse series, the outer series smallest. Przanal plates normally 
four, « small anterior pair and a very large posterior; these 
shields are sometimes more divided. Fore limbs with large smooth 
shields ; hind limbs inferiorly with very large smooth shields ; scales 
on upper face of tibia keeled ; posterior femoral scales granular. 
Five femoral pores in the male, one or two in the female. Tail 
long, gradually tapering to a fine point, covered with quadrangular 
scales forming regular annuli; those on the upper and lateral sur- 
faces longer than broad and keeled, those on the lower surface 
broader than long, smooth, and arranged in two longitudinal series. 
Olive above ; females uniform, males with a lateral series of large 
black ocelli with white centre * ; lower surfaces yellowish white. 
nillim. millim. 
Total length............ 174 From endof snout to vent 54 
Head) 3.) situ poppet 13 Forelimb ............ 18 
Width of head...... com 9% Hind Vimb: 2 tccocada tas 24 
From end of snout to fore at wawer eet aes 120 
UMD gi ecg ends eee a 20 
Brazil. 
a, Q. Pernambuco Mrs. J. P. G. Smith [P.]. 
(Type of Emminia olivacea.) 
b Ds: Para. 
19. PLACOSOMA. 
Placosoma, Tschudi, Arch. f. Naturg. 1847, p. 50. 
Urosaura, Peters, Mon. Berl. Ac. 1870, p. 641. 
Tongue moderately elongate, arrow-headed. Lateral teeth com- 
pressed, bi- or tricuspid. Head with large regular shields ; fronto- 
nasal separating the nasals ; preefrontals and frontoparietals present ; 
nostril pierced in the middle of a single nasal. yelids developed, 
lower with a transparent disk composed of several scales. Ear 
exposed. Limbs well developed, pentadactyle. Dorsal scales 
large, subquadrangular, slightly imbricate, smooth, arranged in 
* It seems to me that the presence of these ocelli is a sexual character ; the 
type specimen which has them is a male, whilst the two specimens in the 
British Museum (£. olivacea) as well as Peters’s C. humilis, which show no trace 
of such markings, are females. This view is besides fortified by our knowledge 
of Prionodactylus oshaughnessy?, in which species the ocelli are much less 
distinct in the females. 
