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Show 544 MR. F. E. B E D D A R D O N T H E [June 23, possessed of three sharp, slender, backwardly-curved denticles, a base forming a broadly expanded plate divided at its posterior extremity into a pair of prongs, which doubtless extended, as in the existing species, beneath the succeeding tooth, thereby gaining additional firmness and strength. The figures indicate a tooth twice the diameter of the anterior teeth of the existing species. The author knew of no living or fossil representative of the teeth, and gave the figure with a short notice, without description or appending to it any distinctive name. There can be no hesitation therefore in associating the fossil with the existing genus, and it may not be inappropriate to append the name of Mr. Lawley and distinguish it specifically, Chlamydoselachus lawleyi. The figures will be found in ' Nuovi Studi sopra ai Pesci ed altri Vertebrati fossili delle colline Toscane,' di Roberto Lawley, published at Florence in 1876, pl. i. figs. 1 -le. I am indebted to Mr. G. A. Boulenger for the opportunity of comparing them with the teeth of the recent Chlamydoselachus in the British Museum. 6. Contributions to the Anatomy of Earthworms.-No. IV.1 B y F R A N K E. B E D D A R D , M.A., F.R.S.E., Prosector to the Society, and Lecturer on Biology at Guy's Hospital. [Received June 23, 1887.] IV. Description ©/"CRYPTODRILUS FLETCHERI, n. sp. Of this species, which is a native of Queensland2, I have studied two specimens ; one of these was fully mature with a well-developed clitellum, the other specimen was immature without any traces of a clitellum. In the larger individual the clitellum occupied five segments, commencing with the thirteenth and ending with the seventeenth ; the glandular epithelium of the clitellum extends all round the body on these segments with the exception of a ventral area on the seventeenth, corresponding to the part occupied by the ventral setse and the space lying between them ; this space was occupied by an elongated genital papilla, which is rather wider at the two extremities than in the middle. The four succeeding segments are furnished each with a similar papilla of equal size to that on the seventeenth segment and of identical appearance. These structures closely correspond to the "dumbbell-shaped areas" described by Mr. Fletcher in another species of the same genus, C. rusticus; and the evident similarity lead me at first to believe that the species described here was identical with C. rusticus. I shall, however, have occasion in the sequel to refer to differences between the two species ; and a careful comparison of Fletcher's description of C. rusticus with my specimen shows that in the 1 Ante p. 372. ' I obtained the specimens through the kindness of Mr. S. Prout Newcombe. |