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Show 1899.] AND BATRACHIANS EROM BOKIEN. 169 This species, named after Mr. C. B. Rickett, is closely related to R. latopalmata Blgr. (afghana Gthr.), from which it is easily distinguished by the shorter fingers and the shorter hind limbs. 7. RHACOPHORUS LEUCOMYSTAX Gravh. Although the largest specimen measures 50 millim. from snout to vent, the head is, as I have noticed before in Chinese specimens, devoid of dermal ossification. The back of the thighs is whitish, Avith a dark brown network. I seize this opportunity to observe that the Moupin Rhacophorus clavidi Sauv. is not closely allied to this species. I examined the types in the Paris Museum some years ago, and noted that the fingers are one-third or one-fourth webbed and the inner metatarsal tubercle is large, oval, somewhat more than half as long as its distance from the tip of the inner toe. R. clavidi is intermediate between R. microtympanum and R. schlegelii. 8. RHACOPHORUS DENNYSII Blanf. This fine Frog was described in 1881 from a specimen of doubtful origin, obtained alive from a Chinese merchant at Singapore and said to have originally come from China. The type specimen, presented by Dr. Dennys to the Raffles Museum, was found, in bad condition, among the unnamed specimens of that establishment a few years ago by Mr. S. S. Flower, who brought the specimen over to London. I have been able to compare it with a second specimen, from Foochow, presented to the British Museum by M r . C. B. Rickett in 1894. Mr. La Touche's Kuatun collection contains three specimens. The following description is taken from the five specimens now before me, varying in size from 86 to 115 millim., measured from snout to vent, the species being one of the largest of the genus:- Vomerine teeth on tAvo strong, straight or slightly oblique transverse ridges touching the inner front edge of the choane and separated by an interspace less than the Avidth of one of the ridges. Head much depressed, broader than long, though sometimes very slightly; snout rounded, truncate at the end and slanting from the nostrils to the edge of the mouth, its length equal to the diameter of the orbit; canthus rostralis strong ; loreal region concave ; nostril nearer the end of the snout than the eye; interorbital space broader than the upper eyelid; tympanum very distinct, measuring two thirds to three fourths the diameter of the eye. Fingers with very large disks, broadly webbed, the web reaching or nearly reaching the disks betAveen the tAvo outer, also reaching the disk on the outer side of the second finger, but only the penultimate phalanx on the inner side of the second and third; a large, compressed, crescentic tubercle (rudimentary pollex) at the base of the inner finger, which is much shorter, and has a much smaller distal expansion, than the second; the largest digital disks nearly equalling the tympanum in size. Toes moderately elongate, Avebbed to the disks, which are |