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Show 1876.] MR. G. E. DOBSON ON THE MOLOSSI. 727 Nyctinomus (Charephon) johorensis, Dobson, Journ. Asiat. Soc. Beng. 1874, p. 144. Nyctinomus johorensis, Dobson, Monogr. Asiat. Chiroptera, p. 183 (1876). Ears as in N.plicatus; but their inner'margins are connected by a band of integument which extends forwards on the muzzle as far as a point placed midway between a line joining the eyes and the ex- Head* of N. johorensis. tremity of the muzzle; this connecting band is continued upwards and backwards between the ears to a height of 0"*4 inch, formine* an incomplete funnel open behind, wide below, and narrow above. At a distance of about 0"*3 inch from the anterior connecting band, the ears are again connected by a second fold of integument, posterior and parallel to the first, about 0"*1 inch in vertical height (fig. 5). Between these two connecting folds of integument and the sides of the ear a hollow square is contained. This concavity is empty, and open only from above. At the base of the funnel-shaped anterior boundary a few long hairs exist, as in N. pumilus. Margin of the ear-conch evenly convex above ; antitragus large, separated by a deep notch ; tragus very small, quadrate, superior margin slightly concave. The animals of this genus possess the power of folding the ear-conch forwards, downwards, and outwards, thus closing the external ear. When the ears are closed, the superior part of the funnel-shaped connecting band is, in this species, drawn forwards, disclosing the cavity behind. In the erect condition of the ears the same funnel- shaped process is drawn backwards across this square hollow cavity, which it covers, as the pitcher of Nepenthes is covered by the leaf forming its lid. In this position the extremity of the funnel is flattened out, and lies in the space contained between the posterior connecting band and the top of the head. The thumb is comparatively longer than in any other species of the genus, and the wing-membrane is attached a short distance below the knee-joint. Upper incisors separated by a very narrow interval in front; lower incisors 4. 48* |