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Show 1895.] ON A NEW SNAKE AND A NEW PROG. 867 7. Descriptions of a new Snake and a new Frog frdm Australia. By G. A. BOULENGER, F.R.S. [Received November 26, 1895.] (Plate XLIX.) The Snake and Frog which I propose to describe form part of a collection made by Dr. Dahl in North Australia, and submitted to m e for identification by m y friend Prof. Collett. The collection is preserved in the Zoological Museum at Christiania, but I have been allowed to retain duplicates for the British Museum. T Y P H L O P S NIGRICAUDA. (Plate X L I X . fig. 1.) Snout very prominent, rounded; nostrils inferior. Bostral broad, more than half the width of the head, extending to the level of the eyes ; nasal incompletely divided, the cleft proceeding from the second labial; praeocular present, a little narrower than the nasal or the ocular, in contact with the second and third labials; eyes distinguishable ; praefrontal and supraoculars considerably enlarged; four upper labials. Diameter of body 70 to 80 times in total length ; tail a little longer than broad, ending in a spine. 18 scales round the body. Brown above, yellowish below ; end of snout yellow; tail black. Total length 315 millim. Two specimens from the Daly Eiver, North Australia. C H I R O L E P T E S DAHLII. (Plate X L I X . fig. 2.) Physiognomy of Rana esculenta. Tongue circular, slightly nicked behind. Vomerine teeth in transverse oval groups between the choanae. Head as long rs broad ; sjout rounded, slightly longer than the diameter of the orbit, with indistinct canthus and very oblique, slightly concave lores ; nostril equally distant from the eye and the end of the snout; interorbital space narrower than the upper eyelid; tympanum very distinct, as large as the eye or a little smaller. Fingers moderate, first longer than second ; toes moderate, wrebbed to the tips; subarticular tubercles very small ; a very small oval inner metatarsal tubercle, measuring about one-fourth the length of the inner toe ; no outer metatarsal tubercle. The tibio-tarsal articulation reaches the anterior border of the eye. Skin smooth; a fold above tbe tympanum. Dark olive above, with a paler vertebral streak; a blackish canthal streak; sides of body marbled with black and spotted with white; hinder side of thighs marbled black and white ; lower parts white ; sides of throat and lower surface of limbs with small blackish spots. Male with internal vocal sacs. From snout to vent 70 millim. Two specimens, male and female, from the Daly Eiver, North Australia. EXPLANATION OF PLATE XLIX. Fig. 1. Typhlops nigricauda. \a. „ „ Upper view of head, X6. 16. „ ,, Side view of head, x6. 2. Chiroleptes dahlii, tf • 2 a. „ „ 6- Open mouth. |
