1902.] Catalogue of the Colcoptera of South Africa. 641 



straight, and having an inner spur ; anterior claws double ; the inner 

 one is not deeply cleft at about the median part, and the outer is 

 more slender, half the length of the inner, and cleft at the tip ; the 

 outer claw of the intermediate legs is similar to the inner one of the 

 anterior legs, and the inner is slender and bifid at tip, in the 

 hind legs the outer claw is very robust and single (Peritrichia), or 

 there is a thin and simple inner one half the length of the outer and 

 set against it (Pherocoma). 



The facies of the insects included in this genus varies a little. 

 Peritrichia tristis resembles Anisonyx, while the facies of P. capicola 

 approximates to that of Lepitrix. The species of Pherocovm are 

 more parallel than the true Peritrichia, the clypeus is less elongate 

 and less narrowed, and in the hind tarsi the inner claw is simple 

 and there is a small outer one pressed against the inner, while in 

 Peritrichia this claw is simple and single; there are, however, 

 numerous variations between these two forms ; for instance, P. hirtiyes 

 is a Pherocoma because of the double claw of the hind tarsi, and a 

 true Peritrichia because of the acuminate clypeus and of the elytra 

 being attenuate behind. 



Key to the Species. 



A=. Claw of hind tarsi double, the inner one strong and simple, 

 the outer one thin, pressed against the inner, and only half its 

 length (Pherocoma.) 



B^. Elytra sub-parallel. 



Black, elytra light testaceous or ferruginous and without 

 scales; the two basal abdominal segments only clothed 

 with white scales tristis. 



Prothorax with an all-round margin of fiavous scales and 

 two median patches of the same on the disk ; elytra 

 testaceous-brown, and having round the apical part a 

 narrow band of opaline scales ascending the suture ; 

 pygidium and abdomen clothed with greenish scales . . firata. 



Black; abdominal segments edged with scales, but the 

 two basal ones entirely scaly in the male, female black 

 with the elytra darkly ferruginous or somewhat piceous red, 

 and having irregular, elongate patches of flavescent scales abdomiiialis. 



Prothorax faintly marginate with scales, and having on 

 the disk four little patches of scales ; elytra with three 

 transversely set white scaly spots near the base, and an ( guttata. 

 apical marginal band j saqa. 



Prothorax with two median round black patches ; elytra red- 

 dish brown and having on each side seven black, roundspots mijro-maculata, 

 B'. Elytra attenuate laterally from the shoulder to the apex. 



41 



