o"2 MR. F. E. BICDDARD ON THE [-^Pl"- 19, 



that tliey buth arise in tl.e same way, viz. by exposure and sub- 

 sequent hardening of the secretinn peculiar to the gland ; for on 

 submitting the smooth oval patch to microscopic examination, I 

 was delighted to fiml that it covi red a collection of glands resem- 

 bling sweat-gland?, 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 through 

 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, though hastily, concluded that this must correspond to those 

 wliich 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 Lemur catta, it turned out that this peculiar gland is also 

 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 Hapalemur. Singularly 

 it is absent in the West-African Lemnr, Perodicticiis potto. 



The intent'on 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 

 representative in the arm of other Lemurs. 



Finally I am of opinion that the spur in Lemur catta and the 

 patch of spines in Hapalemur are formed of the dried secretions 

 pecuhar to the elands. 



3. Contributions to tRe Anatomy of Earthworms. — Nos. I., IT., 

 IIL By Frank E. Beddard, M.A., F.R.S.E., Prosector 

 to the Society, and Lecturer on Biology at Guy's Hospital. 



[Eeceived April 1, 1887.] 

 (Plate XXXin.) 



I. On tlie Structure of Endrilus sylvicola, p. 372. 

 II. Further IS'ote on the Eeproductive Organs of AcantJtodrilus, p. 387. 

 III. Note on the Genital Setae oi I'erichcefa. houlleii, p. 389. 



L On the Structure of Endrilus syhkola. (Plate XXXIII.) 

 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 Endrilus which proves to be new to 

 science. The worms were carefully preserved and have proved to 

 be in an excellent condition for microscopical investigation. 



