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Show 1890.] LIZARD C O L L E C T I O N IN T H E BRITISH M U S E U M . 83 centre of a single nasal. Eyelids developed, lower scaly. Ear exposed. Limbs well developed, pentadactyle. Upper parts granular with enlarged tubercles, the largest of which are spines; ventral plates large, squarish, obtusely keeled, forming regular longitudinal and transverse series; no collar-fold; throat with large, trihedral, spine-like tubercles. No femoral or praeanal pores. Tail cyclo-tetragonal, slightly compressed, with rings of enlarged tubercle.. The nearest ally of this very striking new genus is Neusticurus, D. & B. Apart from the presence of eyelids it is not without resemblance, in its external appearance, to Lepidophyma1. ECHINOSAURA HORRIDA. (Plate X. fig. 1.) Head very distinct from neck, with pointed snout; rugose symmetrical shields on the snout and the anterior half of the vertex, and on the supraocular region ; the rest of the head with unequal-sized granules ; ear-opening smaller than the eye-opening;. five or six upper and as many lower labials. Vertebral line with two series of enlarged keeled scales, on each side of which are several oblique convergent series of similar scales; large erect spines on the nape and flanks, smaller ones on the limbs.. Ventral shields in 8 longitudinal and 20 transverse series. A transverse series of seven small shields borders the anal cleft. The hind limb reaches the shoulder, the fore limb nearly the nostril. Tail a little longer than head and body, the keeled scales forming rings largest and subspinose on the upper surface. Brown, with more or less distinct large yellowish spots.. millim; millim. Total length 150 From end of snout to Head 17 vent 65 Widthofhead. 10 Fore limb 25 From end of snout to Hind limb ......... 34 fore limb 26 Tail 85 Two specimens, female and young, from Ecuador. PTYCHOGLOSSUS, g. n. (Teiidarum). Tongue moderately elongate, arrow-headed, with oblique plicae converging towards the median line. Lateral teeth compressed, bi-or tricuspid. Head with large regular shields ; frontonasal separating the nasals; praefrontals and frontoparietals present; nasal pierced in the suture between two nasals. Eyelids developed, lower scaly. Ear exposed. Limbs well developed, pentadactyle. Dorsal and lateral scales subequal, narrow, with parallel sides, ending in au obtuse point, imbricate and keeled; ventral plates large, square, subimbricate, smooth, forming regular longitudinal and transverse series. A strong collar-fold. Tail subcylindrical. Male with femoral pores. Distinguished from Alopoglossus, Blgr., in the scaling of the body and the strong collar-fold. i I seize this opportunity to change the name of the allied genus Cricosaura. Gundl. and Peters, 1803, which is preoccupied by a fossil Crocodilian (Wagner, 1860), to Cricolepis.- |