168 IGUANID. 
green above, darker on the sides, with a more or less distinct lighter 
dorso-lateral streak; back usually with angular black markings, 
pointing backwards; a black collar or two large black spots under 
the neck; throat and belly rose-coloured; chest yellow. 
millim. millim 
Total length ...... 210 Fore limb. s-s#35% 35 
ICAO ese iciecscis eagles 19 Hind limb........ 62 
Width of head .... 14 ail, sacar’ 145 
BO seGieiviea eee 46 
Ecuador. 
a-f. d, hgr., & yg. W. Ecuador. Mr. Fraser (C.]. (Types. 
11. Liocephalus erythrogaster. 
Brachysaurus erythrogaster, Hallow. Proc. Ac. Philad, 1856, p. 232. 
Upper head-scales large, unicarinate; nostril superior; four or 
five large transverse supraoculars. Neck slightly folded upon its 
sides. Dorsal crest low. Scales upon back, sides, and abdomen 
large, broader than long, strongly keeled. Tail cyclo-tetragonal at 
the base. Head, back, and extremities brownish ; beneath of the 
same colour, except upon chin and throat and sides of abdomen, 
which are of a beautiful pink-red colour. 
From snout to vent 60 millim. 
Colombia. 
12. Liocephalus formosus. 
Liocephalus formosus, Bouleng. Bull. Soc. Zool. France, 1880, p. 43. 
Upper head-scales small, convex, smooth ; four transversely dilated 
supraoculars. Sides of neck strongly plicate. Dorsal crest a slight 
ridge. Dorsal scales rather large, the keels directed obliquely 
towards the vertebral line; ventrals as large as dorsals, smooth. 
Tail roundish. Dark olive above, with a few large black spots on 
the sides of the vertebral line and across the tail; throat black ; 
chest, flanks, and limbs inferiorly metallic blue-green ; belly greyish. 
millim. millim 
Total length ...... 166 Fore limb ........ 32 
Heady 6 ace Sa necoare 16 Hind limb........ 44 
Width of head ....  12°5 WBA: ee.a0e Gok face ergs 101 
Body naa ala a bate 49 
Andes of Ecuador. 
13. Liocephalus ornatus. (Prare XII.) 
Liocephalus ornatus, Gray, Cat. p. 219. 
Liocephalus ornatus, Cope, Proc. Ac. Philad. 1868, p. 121. 
Upper head-scales small, keeled or striated ; nasal separated from 
