7iew Mites living on Lizards. 137 



hairs (one pair placed behind the other) ; finally, two pairs 

 of short plumose hairs situated near the posterior margin, 

 those of the inner pair being placed on either side of the 

 tieiiital aperture. On each side of the posterior margin 

 there is a fringe of about nineteen or twenty very long 

 liairs, which are quite fine, not being feathered or modified 

 in any way. Venter with only fonr pairs of fine plain hairs, 

 which are of moderate length. There is also a tuft of 

 eleven very long fine hairs on each side of the genital 

 aperture. Le(/s slender and of moderate length ; coxae 

 unarmed, being furnished with long fine hairs. 



Length of body 'Q mm. ; its width 1*15 mm. 



Hah. Sixty miles north-west of Kermaushaw, Persia ; 

 a few specimens found under the scales of the tail of 

 Agamu nvpta. 



Pterygosoma melanus, sp. n. 



$ . — This s])ecies is not so wide as compared with its length 

 as is usually the case in the genus. On each side of the* 

 anterior end of the dorsum there is a band of short slender 

 plumose hairs. Hairs on the rest of the dorsum very few 

 in number and Avidely separated from one another ; some 

 distance beiiind the anterior margin there are two pairs of 

 racket-shaped hairs arranged so as to practically form a 

 transverse row, and a little further back there is another 

 pair of similar hairs. Posterior margin furnished with a 

 iriuge of about 18-22 hairs, which are rather short and 

 paddle-shaped, the basal portion being short and cylindrical, 

 but the rest of the hair flattened so as to form a rather wide 

 blade-like expansion, which is striated. Hairs on venter 

 very few in number, a pair of short plain hairs being 

 situated inmcdiately behind the mouth-parts, and another 

 ])air of similar hairs in the middle of the body ; posteriorly 

 there are two move ])airs of hairs, which have the distal end 

 plumose. Legs slender and rather short; coxae unarmed, 

 being furnished with quite fine plain hairs. 



Culour (^pilit-specimcns) usually black, but sometimes 

 paler. 



Ltvgth of body "72 mm.; its width 1*1 mm. 



Hcib. Deelfontein, Ca} e Colony ; several specimens found 

 under axillae aiid vential folds of neck of Agama atra. 

 Klipfontein, Damaraland ; two sptcin.ens found on the 

 same host. 



