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Show 1895.] BATRACHIANS PROM ADEN. 663 the eye and the spiraculum, and one half the diameter of the eye more than the distance between the nostril and the eye. Eyes placed on the upper surface of the head rather widely apart, the interval between them equalling their distance from the snout and falling short of that between them and tbe spiraculum. The spiraculum is placed slightly anterior to the middle line of the body, and is directed straightly backwards, and is visible only from above. The anus is median in position. The tail is about four times as long as deep, and is pointed at its tip. The caudal crests are of nearly equal breadth and parallel to one another. The depth of the muscular part of the base of the tail is about one sixth the length of the organ. Beak with a narrow black margin along the edge of each section, the lower section much smaller than the upper and almost wholly hidden by it. Two upper rows of teeth, the innermost widely interrupted in the middle, and the outer with a slight breach of continuity, possibly due to an injury. Three unbroken rows of lower teeth. A feeble ill-defined papillary fold at the side of the mouth. Muciferous crypts not visible. Blackish above and partly so below. Sides of tail pale greyish yellow, finely marked with black pigment, darkest along the base of the dorsal crest. In another and younger specimen the body and tail are blackish brown, and the caudal crest is yellowish with fine black-pigment spots here and there. Measurements of tadpole:-Total length 14 ; tail 19; breadth of body 19 ; depth of tail 4*5. This tadpole is intermediate in character between the tadpoles of B. viridis and B. vulgaris, but it more resembles the latter than the former in the shape of its caudal crests, which are, however, less developed than in B. vulgaris. The tail in its more pointed character differs from both, but the specimen is not in a good state of preservation. EXPLANATION OF THE PLATES. PLATE XXXVI. Fig. 1. Hemidactylus yerburii (nat. size), p. 640. 1 a. Under surface of fingers, enlarged. lb. „ „ „ toes „ 1 c. Chin-shields. 1 d. View of upper surface of t>nout, enlarged. 1 e. Tubercles or back, enlarged. Fig. 2. Mabuia tessellata (nat. size), p. 649. 2 a. Enlarged view of dorsal scales. Fig. 3. Tarbophis guentheri (nat. size), upper view of head, p. 656. 3 a. Side view of head. PLATE XXXVII. Fig. 1. Latastia neumanni, Matschie (nat. size), p. 643. 1 a. Scales of upper surface of body, enlarged view. Fig. 2. Bana cyanophlyctis, Schneider; tadpole (nat. size), p. 660. 2 a. Mouth ; enlarged. Fig. 3. Bufo andersoni, Boulenger; tadpole, (nat. size), p. 662. 3 a, Mouth, enlarged, |
