I'lIAI-ACIMDAE. 423 



riTA LA CBIDAE. 



A, All tarsi equal in length, first three joints rather broad. 



Last joint of maxillary palpi long and tolerably equally 

 thin throughout ; last joint of labial palpi slightly thickened 

 in middle ; sides of mentum simply rounded. Scutellum 

 very large. Metasternum prominent in front. Apical 

 spines of tibiae hidden among the ring of fine spines. 



Phalacrus, Payk. 



H, Posterior tarsi longer and narrower than front pairs. 



Last joint of maxillary palpi ovate ; last joint of labial 

 palpi rather strongly thickened in middle; mentum dilated 

 at sides. Scutellum moderately small. Apical spines of 

 tibiae distinctly visible. Olibrus, Er. 



I*7ialacrus, 



A, Body ovate or short ovate. 



a. Elytra with extremely feeble traces of impunctate 

 striae. 



Convex. Black ; antennae and legs sometimes brown. 

 Club of antennae elongate, the last joint longer than the 

 other two together and gradually pointed ; interstices on 

 elytra confusedly and exceedingly finely punctured. L. 

 f — 1^ 1. Common. P. corruscics, Payk. 



b. Elytra with feeble punctured striae. 



I. Punctures of striae on elytra very fine ; body 

 short ovate. 



Short ovate, convex. Black, very sliiny ; antennae and 

 legs (especially anterior pair) pitch-black ; tarsi paler. 

 Elytra with very finely punctured striae, interstices with a 

 few very minute, almost obsolete punctures, shewing (when 

 strongly magnified) in certain lights very minute and faint 

 transverse Avrinkles, in others raised longitudinal markings ; 

 apical joint of antennae slightly sinuate on inner-side 

 toward apex. Allied to C. corncscus, but with club of 

 antennae rather broader and not so long, its apical joint 

 conspicuously broader and shorter and less pointed, elytra 

 more obtusely rounded behind, punctures on interstices 

 miich less numerous. Less convex than P. hriinnipes (es- 

 pecially thorax), rather shorter oval. L. 1 1. Scarce. 



P. Brisouti, Eye. 



