3/2 MR. F. E. mCDDARD ON THli [-^P''-19) that tliey butli arise in tl.e same way, viz. by exposure and sub-se(]uent hardening of the secretion peculiar to the gland ; for on submitting the smooth oval patch to microscopic examination, I was delighted to timl that it covi-red a collection of glands resem-bling sweat-glands, each gland being tubular and provided with a distinct duct, but occasionally two ducts would unite near the point where tl.ev opened en the patch of smooth skin. As many as fifteen of these ducts can be counted in a single fine section throngh the patch ; therefore the number of the orifices may be estimated at somewhere about seven hundred, and in some cases perhaps as many as a thousand. On examining the forearm of a foetal Lemur catta I found a cluster of long stitf hairs associated with some large sebaceous glands and at once, tiiougb hastily, concluded that this must correspond to those wliicli I have just desciibed. On examining the arm of Lemur macaco and Chirogaleus coquereli some similar long hairs asso-ciated with glands were also detected. On carefully re-examining the arm of Lemuj-catta, it turned out that this peculiar gland is abo represented, as seen in fig. 4, which will illustrate its appearance and situation far better than a verbal description. The tuft of hairs with their glands occurs in all the Lemurs I have been able to examine alive in the Society's gardens and in dried skins in the Prosector's room, as well as in Hapulemur. Singularly it is abi^ent in the West-African Lemur, Perodicticus potto. The intention of the paper is two-fold : — 1. To call attention to the glands underlying the smooth raised heap of black skin in Lemur catta ; 2. To draw attention to the tuft of long hairs near it, and its reprefentative in the arm of other Lemurs. Finally I am of opinion that the spur in Lemur catta and the patch of spines in Hapalemvr are formed of tl.e dried secretions peculiar to the glands. 3. Contributions to the Anatomy of Earthworms. — Nos. I.,IT,, III. By Fkank E. Beddard, M.A., F.R.S.E., Prosector to the Society, and Lecturer on Biology at Guy's Hospital. [Received April 1, 1887.] (Plate XXXIIL) I. On the Structure of Endriliis sylvicola, p. 372. II. Further Note on the Eeproductive Organs of Acanfhodrilus, p. 387. III. Note on the Genital Setce oi Perichafa houUeii, p. 389. I. On the Structure of Eudrilus sylvicola. (Plate XXXIIL) Mr. W. L. Sclater has kindly presented me with a number of Earthworms which he collected in British Guiana ; among these are a few specimens of a species of EuiJrilvs which proves to be new to science. The worms were carefully preserved and have proved to be in an excellent condition for microscopical investigation.