404 CLAVICORNIA— SILPHIDAE. 



apex, first six joints brown-red, apical 

 joint yellow, rest brown. 



Oblong oval. Black ; legs reddisli-yellow-brown. Thorax 



broadest in middle, posterior angles acute, almost riglit 



angles. L. If 1. Moderately common. C. nigrita, Er. 



C c. Antennae strongly thickened toward 



apex, first six joints brown-red, rest brown. 



Ovate. Pitch-black ; elytra brown ; legs brown, tibiae 

 lighter, tarsi yellowish. Thorax short, transverse, rounded 

 at sides, posterior angles sharp right angles. L. If 1. Com- 

 mon. C. tristis, Panz. 



J> d. Antennae only slightly thickened 

 toward apex, rust-brown, apex yellow- 

 brown. 



Eather oblong. Black. Thorax evenly narrowed liefore 

 and behind, broadest a little before middle, sides slightly 

 rounded, posterior angles right angles ; elytra oblong oval, 

 four times as long as thorax. L. 2\ 1. Pare. 



C. longula, Kell. 



h h. Thorax broader at base than at apex. 



A a. Posterior angles of thorax obtuse. 



Blunted ovate. Pitch-black ; elytra rust-brown, dull ; 

 antennae and legs brown-red, former sliort, only gradually 

 thickened toward apex. Tliorax transverse, broader than 

 elytra, strongly rounded at sides, basal margin straight. L. 

 If 1. Not uncommon. C. grandicollis, Er. 



li b. Posterior angles of thorax sharp right 

 angles. 



Pitch-black ; antennae and legs brown-red, former with 

 apical joints much thickened, black, last joint oblong. 

 Thorax transverse. L. 2 1. Kather common. 



G. chrysomcloides, Panz. 



2? 7?. Elytra with no trace of dorsal striae. 



a (I. Sides of thorax strongly rounded. 



Black-brown ; antennae and legs brown-red, tarsi lighter, 

 former sliglitly thickened toward apex. Thorax transverse, 

 finely gTanulated, posterior angles right angles. L. 1| 1. 

 Not uncommon. G. Kirhyi, Spence. 



h h. Sides of thorax not strongly rounded, 



