568 Descriptive Catalogue [1896. 



from the ligula at a greater or lesser distance from the tip, and 

 longer ; mandibles moderately prominent, arcuate and sharp ; palpi 

 moderately long, last joints more or less fusiform ; antennae long, 

 slender, the three basal joints glabrous ; head a little constricted 

 behind the eyes, which are prominent, and have two supra-orbital 

 setae ; prothorax with the posterior part of the lateral margins more 

 or less recurved, with the exception of Enoicus ; elytra with the 

 margin entire and without internal plica ; apex sinuate, sometimes 

 very deeply ; legs very slender ; tarsi long, also slender ; the inter- 

 mediate and posterior ones very often grooved on the upper part ; 

 the three basal joints of the anterior tarsi of the male feebly dilated 

 and squamulose beneath ; claws simple in the South African species. 

 The characters differentiating this tribe from the Pterostichides are 

 very slight, and consists more in the general facies and the slender 

 legs ; Dr. G. H. Horn has, however, found a good distinctive character 

 in the absence of an internal plica in the non-interrupted margin of 

 the elytra ; this character seems to be constant in the South African 

 species. 



Synopsis of Genera. 



Mentum with a short obtuse median tooth, lateral lobes very- 

 long, straight, and sharp ; paraglossse disunited from the ligula 

 at less than half the length, curving inwardly and slightly longer ; 

 ligula bisinuate at tip and distinctly carinate ; last joint of 

 labial, and the two ultimate ones of the maxillary palpi swollen, 

 clavate at tip ; prothorax quadrate ; joints of anterior tarsi of 

 male not dilated Eliopalomelns. 



Last joint of palpi subcylindrical, truncate at tip ; prothorax 

 quadrate ; joints of anterior tarsi of male dilated Procletus. 



Mentum with a short triangular median tooth, bluntly bifid 

 at tip ; ligula broad, truncate ; paragiossse disunited from it near 

 the apex, a little longer and incurved ; last joint of maxillary- 

 palpi swollen and broadly truncate at tip Lcemosthenes. 



Mentum with a median tooth, long or moderately long, apical 

 part of the lateral lobes very sharp ; paraglossse disunited from 

 the ligula at either half the length [Platymis) or close to the 

 apex [Meg atony clius) or adhering to it [Agonum), longer and in- 

 curved ; ligula slightly sinuate at tip ; last joint of palpi fusi- 

 form Platymis. 



Mentum without a median tooth ; ligula long, truncate at tip ; 

 paraglossse disunited from near the base, and longer than the 

 ligula by one-fourth ; last joint of palpi subfusiform Eulej^itus. 



Mentum without a median tooth ; ligula broad, bordered by 

 the paraglossse at tip ; mandibles scooped internally at tip . . . . Atrotus. 



Mentum with a long median tooth ; posterior sides of prothorax 

 not recurved ; elytra without any dorsal puncture Enoicus. 



Characters of Platynus ; prothorax as broad behind as in front ; 

 claws straight, sharp, and close together Angionyclius. 



