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Show 154 MR. F. E. BEDDARD ON A [Feb. 15, Snakes : Typhlops reticulalus, L.; Geophis lineatus, D. & B.; Elaps lemniscatus, L. Batrachians : Leptodactylus pentadactylus, Laur.; Bufo marinus, L. ; Bufo typhonius, L. ; Ccecilia gracilis, L. GONATODES ANNULARIS, Sp. n. (Woodcut, p. 153.) Closely allied to G. albogularis, D. & B. Snout longer than the diameter of the orbit, obtuse, the granules on its upper surface small, not larger than the dorsals. Supraciliary edge with a small projecting spine, as in most species of Spharodactylus. Seven upper and four or five lower labials; a pair of small chin-shields behind the mental. No transversely enlarged subcaudals. Grey-brown above, with a series of large black spots along each side of the vertebral zone ; head and limbs with black spots or marblings ; tail with black annuli, alternating with white spots inferiorly ; lower surfaces pale brown, throat with oblique dark-brown lines converging backwards. millim. Total length 86 Head -.. 11 Width of head 7 Body 29 Fore limb 15 Hind limb 19 Tail 46 Two female specimens. 5. O n the Structure of a new Genus of Lumbricidse [Thamnodrilus gulielmi1). By FRANK E. BEDDARD, M.A., F.B.S.E., Prosector to the Society, Lecturer on Biology at Guy's Hospital. [Received February 15, 1887.] I owe the specimens of the worm described in the present paper the kindness of Mr. W . L. Sclater, F.Z.S., who collected them for me during his recent visit to British Guiana. They are all rather large worms (see woodcut, fig. 1), measuring up to 6 inches in length and | inch in breadth, and belong to a new genus and species of Lumbricidse, which I propose to call T H A M N O DRILUS GULIELMI. External Characters.-The colour is purplish on the dorsal and reddish yellow on the ventral side ; the clitellum is distinguished from the rest of the body by its paler tint. The mouth is situated precisely at the anterior extremity of the 1 Named after Mr. William Lutley Sclater. |