328 COLEOPTERA OF NORTH AMERICA. 



Tribe X.— DESiWIPHORIjVI. 



The occurrence of Desmipho?^a mexicana Thomson in Texas 

 requires the introduction of this tribe into onr 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 de- 

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

 large S,nd the head is bent down to touch the prosternum. The 

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

 nent between the coxa3, and very declivous before and behind. 

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

 are parallel and cylindrical, rounded at tip. The front co.\iB are 

 angulatcd externally and closed behind. The mesostcrnum is 

 protuberant and perpendicular in front; the middle coxiB are 

 angulated, but scarcely open externally. The 5th ventral segment 

 (in 9 ) is as long as the three preceding united, and truncate at 

 tip. The legs are short, equal, the thighs not clavate, the middle 

 tibiai sulcate externally, with a slight protuberance; 1st joint of 

 hind tarsi not longer than the 2d ; chivvs divaricate. 



The antenna; (?) are two-thirds the length of the body, and 

 pilose, the scape rather stout, scarcely clavate, joints 4-11 gradu- 

 ally, but rapidly decreasing in length. 



Tliis insect is remarkable for being covered with very dense 

 brown pubescence, with lines and crests of very long, fine whitish 

 hairs looking like mould. Beneath it is very prettily variegated 

 with darker spots each surrounded with a white line. Length 15 

 nun. The only specimen we have seen was sent from Texas to 

 Mr. A. S. Fuller, and by him to Dr. Horn. 



Tribe XL— OIVCIDERIIVI. 



With this tribe commences a series in which the front coxal 

 cavities are angulated externally and closed behind, the middle 

 ones open externally, and the claws moderately divergent. The 

 antenna3 in the present tribe are longer than the body in the % , 

 about as long as the body in the 9, and the scape is stouter, 

 Rubcylindrical, nearly as long as the 3d joint, and has no apical 

 cicatrix. The front is very large, quadrate, vertical, and flat, the 

 support of the labrum coriaceous, the mouth large, the palpi 



