25. SACCODEIRA. 159 
1. Saccodeira ornatissima. 
Saccodeira ornatissima, Girard, i. ce. pp. 198, 323, pl. xxviii. figs. 1-8. 
Upper head-scales multicarinate; front edge of ear with two 
projecting scales. Sides of neck pouched, covered with small scales 
aud granules within the pouches; a vertico-oblique fold in front of 
the shoulder. Dorsal scales moderate, rhombic, conspicuously 
keeled, forming longitudinal series, the median exhibiting an incon- 
spicuous crest or ridge, formed by somewhat more developed keels 
than those of the adjoining series; lateral scales smaller, with the 
keels directed obliquely upwards ; ventral scales somewhat smaller 
than dorsals, subrhomboidal, smooth. The adpressed hind limb 
reaches the ear. Tail once and a half as long as head and body, 
slender and tapering, thick and depressed at the base, then slightly 
compressed and conical posteriorly. Greyish brown above, with a 
double series of dark brown subtriangular spots along the dorsal 
region; limbs maculated; upper surface of head blackish; sides 
and under surface of latter whitish, with small jet-black spots ; 
abdomen uniform dull yellow. 
Total length 135 millim. 
Peru. 
2. Saccodeira pectinata. 
Ptygoderus pectinatus, Gray, Cat. p. 216. 
Proctotretus pectinatus, Dum. § Bibr. iv. p. 292; Bell, Zool. Beagle, 
Rept. p. 18, pl. ix. fig. 2; Guichen. in Gay, Hist. Chile, Rept. 
p. 44; Girard, U.S. Explor. Exped., Herp. p. 333. 
Liolemus (Proctotretus) pectinatus, Fi/zing. Syst. Rept. p. 74. 
Proctotretus splendidus, Girard, Proc. de. Philad. 1857, p. 198, and 
le. p. 329, pl. xvii. figs. 1-7. 
Habit rather stout. Snout short. Upper head-scales imbricate, 
strongly keeled; front edge of ear with two or three projecting 
scales. Sides of neck not distinctly plicate, covered with large, 
imbricate, pointed keeled scales; a very small oblique fold or pit 
in front of the shoulder. Dorsal scales large, rhomboidal, pointed, 
sharply keeled, the keels ending in short spines, and forming con- 
tinuous longitudinal lines; those of the vertebral series and of the 
fifth or sixth series on each side of the latter stronger, and forming 
three slight pectinate crests. Gular and ventral scales smaller, 
rhomboidal, imbricate, smooth, emarginate posteriorly. The ad- 
pressed hind limb reaches the axil in the female, halfway between 
the shoulder and the ear in the male; digits rather short, fourth 
finger considerably shorter than third. Tail a little longer than 
head and body, conical, tapering, scaled like the body. Brownish 
above; back with three rows of regular light-edged, dark brown 
spots; some of the dorsal scales emerald-green ; a transverse brown 
band between the eye; lateral crest yellowish white; flanks with 
one or two series of large dark-brown spots, and a more or less di- 
stinct whitish streak from axilla to groin; a white dark-edged 
streak along the back of the thigh; lower surfaces whitish. 
