-Mr. (J. .J. Arrow on Rutelid Coleoptera. 39.3 



scutello flavo-sctoso, cordiformi ; elytris levitor paruin dense 

 punctatis ; pygidio cum abdominis dorso flavo-pubescontibus ; 

 corpore subtus fcro nudo, cum pedibus forrugitiois. 



Lonp:. l(»-o-12-"» mm. 



J, t'lytris basi vapfc infuscatis. subtilissimo punctatis, pilis brunneis 

 lonijissirais parce liirtis; pedibus postice vaMcincrassatis, fomoribus 

 dilatalis spina loiijjja recta munitis, tibiis curvatis, ajiico iutus 

 loiii^issime et acute productis, tarsis (pi ira tibiis i)aulo brevioribus. 



$, tboraco basi fortius contracto, puiietis disco nounullis magnis; 

 elytris magis punctatis, minute et parcissime tlavo-setosis, poae 

 medium maculis parvis 4 propo raargines t'ormantibus. 



JIah. Anf];ola. 



This species is of a shorter and more oval form than 

 T. coriaceus and of a brick-red colour. The upper surface in 

 the female is decorated with minute scaly setaj, collecting on 

 the j)Osterior half of the elytra into rather indefinite yellow 

 spots. In the male these sette are replaced by very long 



Hind legs of males of (a) Trigonochilua coriaceus, Brenske, 

 {b) T. polilits, Arrow. Twice natural size. 



hairs thinly scattered over the prothorax and elytra. In the 

 female the hairs arc much shorter and confined to the margins. 

 The |)rothorax of the male is flatter and less narrowed behind 

 than in the other sex and the elytra are darker at the base. 

 The hind legs show a similar development to those of 

 A. coriaceus^ but the femoral spine is straight, the tibia is 

 produced at the extremity into a very long spur, and the tarsus 

 is scarcely as long as the tibia. 



I have sketched the hind legs of the males of these two 

 species for the sake of comparison. Ilerr Brcnske's figuie 

 of the type species gives a scarcely correct impression of 

 its appearance, as was almost inevitable, since the artist did 

 not see the insect. 



A little more attention given to the sexual characters of the 

 genus Annphgnathus would have rendered the identification 

 and classification of these beetles much simpler. Some of the 



28* 



