528 



MR. F. E. BEDDARD ON MYRMECOBIUS. [JunC 23, 



in another dravping (fig. 2), which represents only the glandular 

 patch, magnified about 5 diameters. 



It will be seen that in this region the integument is naked or 

 nearly so, and its surface is studded with numerous apertures of 

 various sizes, some being very much larger than others. 



An incision through the middle line of the gland shows that the 

 integument is considerably thickened in this region, forming a lens- 

 shaped mass. Large glandular cavities are seen on a naked-eye 

 inspection to be continuous with the external orifices, and to extend 

 as far as the lower surface of the dermis. The material was not in 

 a thoroughly good condition for microscopical research ; but I have 



Fig. 2. 



Glandular pntch of Myrmecobhts faaciafus, more biglily magnified than 



in Fig. 1. 



been able to make out some of the principal facts in the structnie of 

 the integument. 



The glandular apparatus consists of four distinct series of gland- 

 ular structures. 



(1) Sweat-glands, which present the ordinary characters of these 

 glands, being contorted tubules, with a lining of cubical epithelium ; 

 as a rule three tubules unite to form a single duct, which traverses 

 the dermis and epidermis, and opens very often in the neighbourhood 

 of a hair-follicle. These sweat-glands are isolated, usually in groups 

 of three, and form a compact oval body imbedded in the muscular 

 tissue of the dermis. Very often the duct of these glands opened, 

 as already stated, directly upon the outer surface of the body ; and 

 in these cases the duct generally appeared to me to be straight, or at 

 least approximately so ; I never detected the corkscrew-like outline 



