13G Mr. S. Hirst on some 



( Viverra, Paraduxurus, Cynogale, and their allies) have the 

 perineal area provided with scent-elands^ situated in the 

 male between tlie scrotum and the prepuce^ which are 

 widely separated. lu Galidictis and Galidia a similar 

 gland is present at least in the female, the position of the 

 prepuce being unknown. In the Hyaenas there is a large 

 sac, receiving the secretion of the anal glands^ above the 

 anus^ the prepuce is far in advance of the scrotum, and 

 the glans penis is long. 



Finally, Cryptoprocta, which has even been referred to the 

 same family as the Felidae on account of the misleading 

 character of its dentition, has widely different external 

 genitalia and the anus opening into a large sac. 



Thus, if we set aside Linsung. Eupleres, and Fossa, about 

 which our knowledge is defective, it may be seen that the 

 genito-anal area of the Felidse possesses a combination of 

 characters distinctive of this family of ^^luroidea. 



VIII. — On some new Mites of the Suborder Prosiigmaia 

 living on Lizards. By Stanley Hirst. 



(Published by permission of the Trustees of the British Museum.) 



The Acari described below are forms living on lizards, and, 

 Avith the probable exception of Pimeliapldlus tenuipes, they 

 are all true blood-sucking parasites. The species dealt with 

 in this preliminary note will be figured and described in 

 detail in a later paper on parasitic mites. 



Genus Pterygosoma, Peters. 



Pterygosoma persicus, sp. n. 



? . — Body much Auder than long. On each side of the 

 anterior end of tbe dorsum there are two patches of very 

 short plumose hairs ; these patches being almost continirous 

 with one another, the inner one consists of about 5-8 hairs, 

 the outer of 8-16 hairs. Hairs on rest of dorsum very few 

 in number ; some distance behind the anterior patches of 

 hairs there is a transverse row of four plain hairs, which are 

 short and widely separated from one another ; there are also 

 two or three rather long fine hairs on each side near the 

 margin ; posteriorly there are two more pairs of short plain 



