92 THE CANADIAN ENTOMOLOGIST 



Famih- Nitidii.id.e. 



Ouadrifrons, gen. iiox . 



Labruni small, its front edge broadly rounded, not cmarginatc. 

 Front i^rojecting abruptly from head, subquadratc, its sides parallel. 

 Last joint of maxillary palpi oblong-cylindrical. Head without 

 antennal groo\'es. Antenna' reaching middle of thorax, first joint 

 robust, oljconical, second o\al, one-half length of third, which is 

 slender and clavate; 4 — 8 short, as wide as long, closeh' lUMted; 

 club large, subglobose. 3-jointed, the sutures distinct, the two 

 basal joints subequal, strongh' transverse, the last joint obtusely 

 conical, smaller but distinct. ICyes small, ver\' prominent, coarsely 

 granulated. Prosternal spine prolonged and convex between the 

 coxa% then abrupth' bent downward; mesosternum not carinate. 

 Front tibia* with outer apical angle greatly prolonged in the form 

 of a large triangular tooth, the outer sharp edge of the tibia- behind 

 this projection curved and minuteh" serrate, the inner apical angle 

 with a short spine. Middle and hinfl tibia* each armed at apex 

 with two short, slender spines, tlu'ir outtr angles more or less 

 produced, front tarsi feebh' dilated, middle and hind ones slightl\' 

 broadened ; claws simple. 



Related to Perthalycra, but the front more abrupt, labrimi not 

 bilobed, prosternum bent abruptly downward behind the front 

 coxa* and structure of front tibia* radicalK- differcni. 



Ouadrifrons castaneiis, sp. no\ . 



()blong-o\al, convex. Aboxe dark reddish or chestnut-brown, 

 rather thickly clothed with slender, prostrate golden-yellow hairs, 

 those along the margins of thorax, elytra and legs longer and erect, 

 forming a fringe; antenna*, legs and under surface somewhat paler 

 reddish-brown. Head nearly three times as wide as front, fmeh' 

 and sparsely granulate. Thorax convex, more than twice as wide 

 as long, sides broadly rounded, apex feebl\' and bnjadh' emarginate, 

 base truncate, hind angles rounded; disc minutely alutaceous, 

 finely and sparsely granulate-punctate, eetch puncluri' bearing a 

 prostrate yellow hair. Scutellum \er>- large, semi-oval, its apex 

 broadly rounded. Elytra oblong, convex, scarceh' as wide as 

 middle of thorax, one-third longer than wide, sides \er\- feebh' 



