AMERICAN COLEOPTERA. 161 



being membranous, a little longer than the ligula, arcuate, obtuse and 

 finely ciliate. In the general form of body, especially the thorax, 

 Folystichus resembles very greatly Helluoviorpha. 



The latter genus is the only one known to inhabit our fauna. 



Helluodes Westw., placed by him in the present tribe does not belong 

 here, it is evidently allied to Anthia. 



Tribe XXXVI.— Graphipterini. 

 Antennse more or less compressed, arising at a distance beneath a slight frontal 

 ridge, three basal joints glabrous, third joint eqnal in length or a little longer than 

 the next two together. Head with front deflexed, two supra-orbital setie, heck 

 stout, clypeus slightly prolonged, a setigerous puncture each side. Eyes oval in 

 the axis of the head, very distant beneath from the buccal iissure. Labrum 

 moderately prominent, arcuate in front but slightly emarginate at middle, sex- 

 setose.' Mandibles moderately stout, arcuate near the tip which is acute, inner 

 edge with slight tooth behind the middle, outer edge without setigerous puncture. 

 MaxilltB hooked at tip, coarsely and densely ciliate within, outer lobe biarticulate, 

 the terminal joint a little longer, palpi moderate in length the last two joints 

 nearly equal, the tenninal slightly oval and truncate at tip. Mentum deeply 

 emarginate, not toothed but with the bottom of the emargination slightly promi- 

 nent, ligula moderately prominent, elongate-oval, bisetose at tip, the paraglossse . 

 broad, membranous, adherent in tlieir entire length and meeting by a narrow 

 band at the apex of the ligula, palpi moderate in length, the terminal joint 

 cylindrical, arcuate, slightly stouter at middle, truncate at tip, shorter than the 

 preceding which is plurisetose in front. Thorax variable in form, cordate or 

 trapezoidal, margin acute, sides without setigerous punctures. Elytra not mar- 

 gined at base, broadly oval or suborbicular, feebly convex, apex truncate, margin 

 acute, no internal plica, the ocellate punctures of the margin indistinct (or entirely 

 wanting ?). Prosternum acute at tip, not prolonged. Mesosternum oblique, the 

 epipaera extremely narrower. Metasternal epimera distinct, posterior coxse con- 

 tiguous. Legs slender moderately long. Tibife with the outer edge sulcate in its 

 entire length and spinulose, the anterior emarginate within, the inner spur remote 

 from the apex. Posterior tibia? with the terminal spurs dissimilar, the inner very 

 slender, the outer cylindrical, compressed, and obliquely truncate at apex. Tarsi 

 slender with stiff bristles beneath, those at the tips of the joints long. Claws very 

 slender, simple. Body winged or not. 



The males have three joints of the anterior tarsi slightly dilated with narmw 

 squamules beneath. 



This tribe which is essentially African contains but two genera, 

 Graphipterus and Piezia. As Lacordaire correctly observes they are 

 in most respects Truncatipennes, but if the ligular characters were given 

 full power the two genera would be found in a very uncomfortable 

 position in the Lebiide series. 



It will be observed that the setigerous punctures of the upper surface 

 are reduced almost to the mininuim and the supra-orbital seta3 are never 

 long, often inconspicuous. In quite a number of specimens which have 

 been examined no thoracic setoe have been observed. 



TliANS. AM. ENT. SOC. IX. (3()) OCTOBEU, 1881. 



