OCR Text |
Show 198 MR. G. A. BOULENGER ON THE [Feb. 2, III. LIZARDS. A. Head covered with granules or small scales above. 1. N o movable eyelids; pupil vertical. a. Digits not dilated. Ear-opening oval, slightly oblique, nearly vertical; lower surface of thighs uniformly granulate 4. Gymnodactylus jellesmce. Ear-opening a horizontal cleft; male with femoral pores, female with a series of enlarged scales along the lower surface of the thighs. 5. Gymnodactylus fumosus. b. Digits dilated. a. Digital expansion with two series of lamellae inferiorly. Digits free, all clawed 6. Hemidactylus frenatus. Digits webbed, all clawed 7. Hemidactylus platyurus. Digits webbed at the base, inner rudimentary and clawless. 8. Gehyra mutilata. Digits with a rudiment of web, inner well developed but clawless. 9. Lepidodactylus lugubris. (3. Digital expansion with single lamellae inferiorly. Rostral shield not entering the nostril; toes free. ] 0. Gecko verticillatus. Rostral shield entering the nostril; toes with a rudiment of web. 11. Gecko monarchus. 2. Movable eyelids ; pupil round. a. Wing-like lateral membranes, supported by the much-prolonged spurious ribs. a. N o parietal foramen. Hind limb reaching slightly beyond the elbow of the adpressed fore limb; a continuous series of enlarged keeled scales along each side of the posterior half of the body 12. Braco reticulatus. Hind limb reaching the axil or a little beyond; enlarged lateral scales absent or few and far between 13. Braco spilonotus. (3. Parietal foramen very distinct; bind limb reaching the axil or a little beyond 14. Braco beccarii. b. N o wings. a. Body and tail compressed, crested. Crest feeble on back and tail 15. Calotes cristatellus. Caudal crest high, supported by the neural spines. 16. Lophura amboinensis. /3. Body depressed ; tail compressed, not crested. More than 80 transverse rows of ventral scales from gular fold to groin. 17. Varanus salvator. 74 transverse rows of ventral scales from gular fold to groin. 18. Varanus togianus. B. Upper surface of head with symmetrical shields. 1. T w o pairs of limbs. a. T y m p a n u m distinct, more or less sunk; fourth toe considerably longer than third. a. Lower eyelid scaly, without central disk; limbs overlapping when adpressed. * Dorsal scales pluricarinate; supranasal present. Dorsal scales tri- or quinquecarinate ; hind limb not reaching the axil. 19. Mabuia multifasciata. Dorsal scales very strongly tricarinate; hind limb reaching the axil or beyond. 20. Mabuia rudis. |