ANOPLURORUM BRITANNIA. 187 



ABDOMEN, the last segment but one in the female furnished 

 with moveable curved valves for the purposes of coition. 



TARSUS two jointed, curved, formed for climbing ; unguis 

 single, which passing between the spines at the base of 

 the tibia forms a claw. 



FOOD hair, wool, and the exfoliated particles of the Epi- 

 dermis. 



* Head very broad, body somewhat orbicular and short. 



1. TRICHODECTES CRASSUS. (Louse of the Badger.) 



Plate XVII. Fig. 3. 



Pale fulvous ; head and thorax bright ferruginous-yellow, 

 the former deeply emarginate, with four black fascia in 

 front, and two from the eyes to the occiput; abdomen 

 orbicular. 



Trichodectes crassns. Nitzsch. Germ. Mag. iii. p. 295. Step. Cat. pt. ii. 

 p. 330. Pediculus Melis. Fabricius. Syst. Antl. p. 341. 



Pale tawny-yellow ; head and thorax bright ferruginous 

 yellow, the former very large, transverse ; clypeus deeply 

 emarginate, with two black fasciae in the centre, and one 

 before the antennae on each side ; vertex concave, lateral 

 margin very deeply sinuated, base obtusely trilobate, with 

 two broad diagonal dark fascia from the occiput to the an- 

 tennae ; eyes prominent and black ; antennae thick, with 

 first joint large and conical, the second and third cylin- 

 drical, slightly clavate ; prothorax transversely panduriform, 

 with the lateral margins fuscous ; metathorax of equal width, 

 very short, deeply notched behind and ciliated ; abdomen 

 large, orbicular and flat, with a depressed line down each 

 side, segments nearly equal, somewhat sinuated in the cen- 

 tre ; legs long ; tibiae clavate, strongly toothed at the ex- 

 tremity internally ; tarsi short; ungues slightly curved. 

 Length j. 



