ANCIIOMENUS. 49 



A a. Elytra red-lirown, usually darker near 

 suture, sides nearly parallel. 



Head and thorax black; mouth, palpi, and first joint of 

 antennae reddish. Striae on elytra fine, with four impres- 

 sions in third interstice. L. 3 1. llather connnon. 



A. llwi'ciji, I)ej. 



-/? b. Elytra pitch-black, sides very slightly 



rounded. 



Head and thorax pitch-black ; mouth, base of palpi, and 



antennae reddish. Elytra rather more convex than in A. 



Tliorciji, and the striae on them somewhat stronger, third 



interstice with four impressions. L. ?> — o\ 1. Eather 



common. A. pvcllus, Dej. 



OlisfhopHs. 



Bronze-brown alcove ; reddish-l.)rown beneath ; palpi, 

 l)ase of antennae and legs yellow. Thorax broader than 

 long, very finely punctured at the base and sides ; elytra 

 with deep, very finely punctured striae, and three impres- 

 sions at the side of third interstice. L. 3 — Sh 1. Common. 



0. rotunda tns, Payk. 



St o Hit's, 



Pitch-black, shining ; antennae and legs red. Thorax 

 rather longer than broad, heart-shaped ; elytra oblong ovate, 

 with strongly punctured striae ; breast strongly punctured. 

 L. 3 1. Common. S. pumicatits, Panz. 



JPlafijfJerus. 



Apterous. Head pitch-black ; thorax reddish, as broad 

 as long, slightly narrowed behind, sides somewhat rounded, 

 central furrow strong, a short furrow on each side at base ; 

 elytra red-brown, rather flat, with impunctate striae and 

 three impressions on the third interstice ; palpi, antennae, 

 and legs red. L. 3^ 1. Piather common. 



F. ruficollis, Marsh. 



Ptei'OstlvJius. 



A. Margin of elytra with only one stria outward from 

 the eighth stria, which l.)ears a row of impressions. 



e 



