342 COLEOPTERA OP NORTH AMERICA. 



Group III. — Eupogonil. 



The eyes are very coarsely granulated, with the lower lobe not 

 transverse, they are larger in Lypsimena than in Eupogonius ; 

 antennae not longer than the body, scape feebly clavate, shorter 

 than 3d joint ; clothed with long flying hairs in Eupogonius, 

 sparsely ciliate beneath in Lypsimena ; prothorax densely punc- 

 tured, without dorsal tubercles, armed on the side with a small 

 acute spine ; elytra sparsely punctured, with irregular mottlings 

 of yellowish pubescence in some species, with only erect hairs in 

 Eu. subarmatus. Body and legs clothed with erect hairs, which 

 are usually very long, but shorter in the species just mentioned. 

 Legs short, equal, middle tibia? without sinus or tubercle ; 1st 

 joint of hind tarsi a little longer than the 2d. Last ventral 

 rounded at tip, larger in 9 than % . 



Eu. subarmatus bears a deceptive resemblance to Amphionycha, 

 and the first specimen which I obtained being mutilated, was 

 described as belonging to that genus, from which it is abundantly 

 distinct by the coarsely granulated eyes, and entire ungues. 



Body with flying hairs ; 



Antennae pilose, joints 5 — 10 shorter, equal. Ecpogonius. 



No flying hairs ; 



Antennas sparsely ciliate beneath, outer joints very gradually shorter, 

 prothorax unarmed. Lypsimena. 



My specimen of the second genus is imperfect, so that the form 

 of the middle coxal cavities cannot be observed ; Lacordaire 

 states that they are open. The very coarsely granulated eyes 

 induce me to believe that its strongest affinity is with Eupogonius. 



Tribe X.— DESMIPHORIIV1. 



The occurrence of Desmiphora mexicana Thomson in Texas 

 requires the introduction of this tribe into our fauna. The front 

 is large, the support of the labrum is not visible, and the labrum 

 itself is of peculiar form, the basal half is densely pubescent, and 

 the apical half obliquely truncate, presenting an obliquely decli- 

 vous oval surface, which is finely carinated ; the mandibles are 

 large and the head is bent down to touch the presternum. The 

 eyes are coarsely granulated. The presternum is short, promi- 

 nent between the coxae, and very declivous before and behind. 

 The prothorax is armed with a strong lateral spine. The elytra 



