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Show 1871.] DR. J. ANDERSON ON INDIAN REPTILES. 197 which would have been productive of little or no noise, whilst the oblique rasping of these little saws against each other produces a noise that can be heard as well as the hiss of any large serpent. The noise can be produced after death by rubbing the sides of the body against each other in the direction of the scales. During life this handsome little Viper is always engaged in rubbing its scales together when disturbed. It is very fierce, and strikes with great vigour. It is very deadly and is the cause of much mortality among the field-labourers of the north-west of India, where it appears to be not uncommon. RANA KUHLII, Schleg.; Gthr. /. c. p. 404. One specimen of this Frog exists in the Museum. Unfortunately no locality is given; but it is probably either from Ceylon or Burmah, in all likelihood from the former locality. It has not, however, the transverse plaits of the skin of the back characteristic of Giinther's var. B from Ceylon, but is almost smooth above-a circumstance that may be accounted for by age, as the body measures 2" 7'". The lower part of the leg and tarsus are roughly tubercular. It agrees in every other character with Giinther's description of the species ; and if the absence of the transverse folds and small tubercles is not attributable to age, it verifies Giinther's statement that the transverse folds of the skin are not a constant character, any more than the mandibulary fangs, which are well developed in this specimen. RANA TIGRINA, Daud.; Gthr. I. c. p. 407. Agra. RANA FUSCA, Blyth, Journ. As. Soc. Bengal, xxxiv. pp. 719, 720 ; Gunther, I. c. p. 403 ; Theobald, Cat. Rept. As. Soc. Museum, p. 79 ; Giinther, P. Z. S. 1868, p. 478. Head triangular, rather broad behind ; snout rather short, pointed, and rounded in front, truncated in the aged adult; no canthus rostralis; sides of snout broadly rounded, and shelving outwards. Nostrils oval, m u c h nearer the extremity of the snout than the eye. Width between the eyelids slightly greater than the distance between the eye and the nostril. Tympanum indistinct in the young, much smaller than the eye, almost hidden in the adult, reduced to a small yellowish disk in the centre of the wide aural, depressed. Vomerine teeth six to nine, strong, on two prominent rather short oblique ridges, on a line with the inner anterior angle of the cohanse, converging behind, but widely separated. In adult specimens a strong transverse osseous ridge behind the choanae. Tongue cordate. Two very large fang-like apophyses on the lower jaw, directed backwards, and received into a groove in the upper jaw. Rostral portion of snout prominent, overlapping and trenchant. Lower jaw transversely truncated m adults to receive it. N o vocal sacs. A strong fold from the eye over the tympanum to the shoulder ; posterior third of upper eyelid tubercular Skin smooth above in adults, slightly tubercular in other and |