LICE. 



3^9 



^^SE the intestines can plainly be seen of a dull red colour. This 



species has also been taken on the ferret. 



Nos. H^MATOPiNUS QUADRUMANUS (Af-?^;-;-, ;/. J/.).— 52. Specimens (4); 63. En- 

 *^^^ larged figure of ditto ; 54. Illustrative vignette (monkey). . 



From a species of Ateles. 



Monkeys are notoriously lousy creatures, 

 as any one may convince himself by entering a 

 monkey-house, where he is sure to see one or 

 more of them busily engaged in searching for 

 vermin amongst the fur of their companions, 

 and eating the captured prey. ^ The specimen 

 here figured was taken from a species of Ateles 

 (a prehensile tailed monkey from South Ame- Hcematopinus quadrumanui 



^ -^ •' I to I i line in length. 



rica), and it will be seen that it has many 

 points of resemblance with the Pediculus humanus. 



Genus Phthirius {Leach). 



The genus Phthirius is a very distinct and peculiar one, the 

 essential character of which is that the grasping or scansorial claws 

 are on the hind feet instead of on the fore feet as in the Pediculus. 



CASE Phthirius inguinalis (crab louse).— 1. Specimens ; 2. Enlarged figiu-e oC 

 XX. ^ 



Nos. 

 r, 2. 



ditto. 



Phthirius in^inalis. | to x line in length. 



Scansorial claw of ditto. 



