372 MR. B. I. POCOCK ON THE 



suspect, from the form of the anal pouch, that there are here, as 

 in Crossarchus *, several pairs of anal glands." 



This is not the case in the examples of Suricata suricatta 

 I have examined. 



In a male the anal sac resembles that of Mungos mungo in a 

 general way, but is relatively larger. It is marked on each side 

 of the anus by a transversely oblique slit-like depression, and not 

 with several depressions as in Ariela fasciata. Its surface is 

 pitted with comparatively large and quite conspicuous hair- 

 follicles, and from most of these, perhaps all normally, a single 

 hair or a little tuft of hairs arises. Under pressure liquid 

 secretion can be squeezed from the pores of these follicles, which 

 are particularly numerous in the oblique depression above 

 described. When expanded, the depression is seen to curve 

 downwards towards the lateral margin of the anal pouch, and 

 the orifice of the anal gland is situated just below its deepest 

 portion, but is concealed within it when the depression is un- 

 expanded. There is a single moderate-sized gland on each side, 

 as Daubenton said ; and I can find no evidence for the multi- 

 plication of similar glands such as Chatin described in the male 

 Ariela fasciata. On the contrary, sections of the highly glandular 

 hair-follicles show them simply imbedded in the thickened skin 

 of the anal pouch without coalescing to form composite glands 

 with reservoirs for the storage of secretion. In its glandular 

 ■character the anal pouch I'ecalls that of the female Ariela fasciata, 

 with the exception that the hair-follicles are more irregularly 

 scattered and not aggregated in so many definite integumental 

 depressions. 



In a female (text-fig. 10, H) the gland is similar to that of the 

 male, and apparently as well developed. The two orifi(;es of 

 the anal glands perforate the walls of the sac nearly midway 

 between its lateral border and the anus. The integument of the 

 sac round about them is pitted with lai^ge hair-follicles. These 

 also extend to the middle line of the sac both above and below 

 the anus, and there is an aggregation of larger pores lodged in a 

 depression just above the orifice of the gland on each side. As 

 in the male, this depression lies in the crease of skin formed 

 when the superior part of the sac closes over the inferior part 

 when the tail is lowered. There appears to be no definite 

 storage-sac beneath this cluster of follicles, and, as in the female 

 Ariela fasciata, the only reservoirs for secretion are those of the 

 pair of anal glands proper. 



The only other genus which requires particular mention in 

 this connection is Helogale. In the male and the female of the 

 species identified as Helogale undidata (text-fig. 10, A, B, 0) 

 the anal sac is well developed and provided with supplementary 

 pouches. The anus itself lies in the centre of a slight depression 

 defined above by a fine but distinct cutaneous ridge. On each 



* By CrossdrcJius Mivai't meant the species referred in this paper to Crossarchus 

 obscurus, which he erroneous!}- believed to have multiple anal glands, and Ariela 

 fasciata, in which many anal glands had been described by Chatin. 



