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. 



