66 GEODEPHAGA — CARABIDAE. 



2. Sides of thorax strongly rounded. 

 Head and tliorax pitchy ; under-side red-brown ; mouth, 

 antennae, and legs red. Thorax scarcely narrower behind 

 than in front, finely punctured ; elytra slightly sinuate 

 before apex, interstices very finely and closely punctured, 

 more closely beliind than at the base. L. 4^ — 5h 1. Com- 

 mon. If. rotundicolHs, Fairm. 



IIT. Posterior angles of thorax sharp right angles. 

 Dark-green above ; pitch-brown beneath ; mouth, an- 

 tennae, and legs red. Head finely and very scantily punc- 

 tured ; thorax not much contracted behind, more strongly 

 punctured than head ; elytra with very closely and finely 

 punctured interstices. L. 4 1. Not uncommon. 



H. i^unctatulus, Duft. 



iy» Posterior angles of thorax only slightly obtuse, 

 but rounded at apex. 

 Pright-green or blue above ; pitch-brown beneath ; 

 mouth, antennae, and legs red. Head tolerably strongly 

 punctured ; thorax slightly contracted behind, coarsely 

 punctured ; interstices of elytra closely and moderately 

 strongly punctured. L. 3 — 3| 1. Eatlier common. 



H, azureus, Pab. 



In the variety siinilis, Dej., the elytra are more strongly 

 punctured. 



&. P^lytra black or brown. 



I. Thorax heart-shaped, toleriibly convex. 



Redcb'slt or d;irlc-l)rown aliove, elytra with a l)road red- 

 dish band along the suture; under-side red-brown; antennae 

 brown-red ; legs yellow-red. Elongate. Thorax rounded 

 at the sides in front, suddenly narrowed behind, posterior 

 angles right angles, strongly punctured ; interstices of 

 elytra closely and finely punctured. L. 4 1. Not common, 



H. cor daises, Duft. 



II, Thorax sliglitly heart-shaped, flattish. 



1, Sides of thorax tolerably strongly rounded in 

 front. 



A A, Thorax not much l)roader than long. 



a a. Posterior angles of tliorax slightly ob- 

 tuse, elytra somewhiit elongate. 



