152 ^ GEO. H. HORN, M. D. 



The anterior tarsi of the male are more dilated than in the female. The sexual 

 characters are otherwise variable and are found in the form of the middle and 

 posterior tibiae and the sculpture and pubescence of the abdomen. 



In comparing the species of this tribe with those of the Odacanthini 

 and CtenodactyUni it will be seen that there is a close relationship which 

 can not be neglected for the structure of the ligula alone. By retaining 

 Agra in any part of the true Lebiide series we introduce confusion as 

 great as with Mormolyce. In many parts of the Carabide series the 

 ligula has been entirely neglected where its consideration would cause an 

 obvious violation of natural affinities. Conspicuous among these cases of 

 neglect we find the Cxraphipterini and Athiini. 



It may be well to call attention to the fact that in all the tribes 

 with long head and thorax the tibial spurs are exceptionally small, and 

 Lacordaire says of Agra " sans epines terminales." 



The species of this tribe belong to two genera, Agra and Agridia and 

 all with one exception occur in intertropical America. 



Tribe XXXIII.— Egini. 



Antennae moderate in length, slightly thicker externally, arising under a feeble 

 frontal ridge, the four basal joints glabrous, that is they are somewhat hairy but 

 not densely punctured and finely pubescent as the following joints, the basal joint 

 moderately stout but not equal in length to the two following joints together. 

 Head oval rather strongly constricted at a distance behind the eyes to a neck, with 

 two supra-orbital setae. Eyes oval in the axis of the head, moderately prominent 

 but distant beneath from the mouth. Clypeus feebly prolonged, a setigerous 

 puncture each side. Labrum feebly prominent, slightly emarginate, sexsetose. 

 Mandibles acute at tip, without setigerous puncture externally. Maxillse slender, 

 slightly hooked at tip, spinulose and ciliate internally, outer lobe slender, biarticu- 

 late, the terminal joint shorter, the palpi moderate in length, the terminal joint 

 obovoid, suddenly narrowed and prolonged at tip, surface pubescent. Mentum 

 deeply emarginate and with a short obtuse tooth; ligula not prominent, emar- 

 ginate and bisetose at apex, the tip free for a short distance, paraglossse slightly 

 longer than it, palpi moderate the terminal joint like that of the maxilla, the 

 penultimate bisetose in front. Thorax ovate, somewhat constricted at base, margin 

 almost entirely obliterated, sides with two setigerous punctures placed almost as 

 in the Clivince. Body distinctly pedunculate, scutellum not visible between the 

 elytra. Elytra not margined at base and without scutellar stria, lateral margin 

 obsolete, sides narrowly inflexed, apex subtruncate, disc striate at base, dorsal 

 punctures three but indistinct. Prosternum not prolonged. Mesosternum oblique, 

 the epimera very narrow. Metasternal epimera distinct, posterior coxae separated. 

 Legs slender, tibiae ciliate externally, the anterior deeply emarginate within. 

 Tarsi slender and long, fourth joint entire. Claws simple. 



The anterior tarsi of the male are merely a little stouter than those of the 

 female and somewhat more ciliate. 



I know of but one genus which enters this tribe, Ega. In the books 

 it forms a part of Lacordaire's tribe Anchonoderides and with Schaum 

 and LeConte of the more comprehensive tribe Odacanthini. 



