AMERICAN COLEOPTERA. 145 



or rounded in Euphorticus, the striae entire, the eighth stria distant from 

 the margin with very distinct ocellate punctures in the former genus, not 

 distinct in the latter. The setigerous punctures of the side of the thorax 

 are two in number, the first situated at the point of greatest width, the 

 second midway between this and the hind angle. The thorax is not 

 wider than the head between the eyes. 



The males have the anterior tarsi slightly dilated and from the 

 anterior angle at the inner side of the joints 1 — 3 proceeds a brush 

 of fine silken hair. 



To the two genera above named it will probably be necessary to add 

 Lasiocera. Euphorticus n. g. is founded on Lachn. jmhescenx Dej., and 

 the only characters separating it are those given in the table. 



•Group Anchosoderi. 



The eyes are not prominent. Head oval slightly narrowed behind 

 the eyes, front horizontal. Elytra not margined at base, the apices 

 rounded, surface striate, eighth stria distant from the margin and with the 

 ocellate punctures feeble, dorsal punctures three but fine and indistinct. 

 Thorax cordate as wide as the head, lateral setigerous punctures situated 

 at the point of greatest width and in the hind angle. 



The anterior tarsi of the males have three joints slightly dilated and 

 with squamiform papillae and ciliate at the side. 



Anchonoderus and probably Camptofoma enter this group. The former 

 genus alone is represented in our fauna by one species from Texas. 



Group Atrani. 



Head oval, more elongate than AnihonoderuR the eyes not prominent. 

 Antennae with but three joints glabrous, the fourth punctured and 

 pubescent as the fifth. Thorax cordate, a little broader than the head, 

 the setae in the normal position at the side and in the hind angles. 

 Elytra margined at base, the apices rounded, surface striate, the ocellate 

 punctures well marked, dorsal punctures not distinct. 



The sexual characters are as in Anchonoderus. 



This group contains in our fauna but one genus Atranns Lee. The 

 species A. puhescens Dej., was originally described as an Anchomenus ; 

 separated by LeConte with its present generic name it was placed among 

 the Chlaeniini. Chaudoir first suggested its removal from that position 

 to that in which it is now found. 



Tribe XXVIII.- Ctenodactylini. 



Antennffi slender, base free, three basal joints glabrous, first joint stouter, as 

 long as the next two, ,S— 11 equal or nearly so. Head rhomboidal, prolonged 

 behind the eyes and narrowed to a distinct neck, front with two supra-orbital 

 setse; clypeus moderately prolonged, a setigerous puncture each side. Eyes large 



TRANS. AM. ENT. SOC. IX. (32) SEPTEMBER, 1881. 



