188 MONOGRAPHIA 



This species, which is very numerous on the Badger 

 (MelesTaxus), approaches very nearly to the following spe- 

 cies, but may be readily distinguished by the greater width 

 of its head, deeply notched clypeus, and more orbicular 

 form of body. 



2. TRICHODECTES LATUS. (Louse of the Dog.) 



Plate XVI I. Fig.l. 



Pale fulvous ; head and thorax ferruginous-yellow, the 

 former sub-quadrate, with two black spots in front, and two 

 diagonal fasciae from the antennae to the occiput ; abdomen 

 oval. 



Trichodectes latus. Nitzsch. Germ. Mag. iii. p. 296. Step. Cat. pt. ii. p. 

 330. Burmeister Handbuch, ii. pt. ii. p. 436. 2. Ricinus Canis. De 

 Geer. Inst. vii. pi. iv. fig. 16. Pediculus setosus. Olfers. 84. 



Pale tawny ; head sub-quadrate, vertex concave ; cly- 

 peus broad and slightly rotundate, with two trapezoidal 

 black spots in the centre, lateral margin deeply sinuated 

 before the eyes, with a black spot at the anterior angle 

 passing to the base of the antennae, and uniting with the 

 diagonal fasciae on each side to the occiput, base rotundate ; 

 eyes prominent ; antennae pale yellow, in the male the first 

 joint large and sub-cylindrical, second smaller, third some- 

 what clavate and recurved, in the female smaller, more 

 slender, clavate, the last joint elongate ovate; prothorax large 

 and transverse; metathorax short, deeply emarginate and cili- 

 ated ; abdomen large, oval, and depressed ; legs long, pale 

 fulvous; tibiae clavate, toothed internally at the apex; ungues 

 arched and acute. Length to f . 



Common upon dogs more especially puppies. The male 

 when walking, generally curves back its antennae, which 

 being slightly bent at the extremity have a somewhat Tau- 

 rine aspect. 



