252 SEKEICOENIA. 



It would be rather difficult to assign this insect to a generic position in the absence 

 of the closely related species. The propleural groove is so very narrow posteriorly 

 that it seems to be in front merely a separation of the prosternal sutures. While the 

 species closely resembles M. elatus, it differs in the much longer postero-inferior line, 

 the comparatively smooth propleurse, and the feeble elytral striae at the middle near 

 the base. One male specimen alone has been seen. 



12. Microrhagus meticulosus. 



Microrhagus meticulosus, de Bonv. Mon. p. 604 \ 

 Eab. Mexico, Cordova (Salle 1 ). 



By some singular mistake, de Bonvouloir has confounded two very distinct species, 

 this and the following. Having now the type before me it is possible to indicate the 

 differences. M. meticulosus has entirely ferruginous elytra, the thorax not grooved 

 along the middle, and the outer carina of the juxta-sutural groove entire. This 

 species has not yet occurred in temperate North America. The figure (t. 29. fig. 6) 

 given by de Bonvouloir applies to M. humeralis. 



13. Microrhagus humeralis. 



Eucnemis humeralis, Say, Trans. Am. Phil. Soc. vi. p. 189 \ 



Microrhagus humeralis, Lee. Proc. Acad. Phil. vi. p. 48 2 ; de Bonv. Mon. p. 607 3 ; Horn, Trans. 

 Am. Ent. Soc. 1886, p. 36 *. 



Hab. Noeth Amekica, United States from Canada southward 4 , Pennsylvania 2 3 , 

 Indiana 1 , Tennessee, Georgia 3 , Louisiana 3 . — Guatemala, Capetillo (Champion); 

 Panama, Caldera in Chiriqui (Champion). 



This species is quite constant in its colour, piceous-black, the elytra at the basal third 

 orange-red. The disc of the thorax is feebly impressed along the median line and the 

 outer carina of the juxta-sutural sulcus does not extend more than three-fourths to the 

 base. The description of M. meticulosus seems to have been made from this species, 

 at least in part, while the figure (t. 29. fig. 6) is very good for this one. 



14. Microrhagus thoracicus. 



Cylindrical, convex, piceous-black, feebly shining, head and thorax reddish-brown, very indistinctly pubescent : 

 antennae piceous, strongly ( $ ) or moderately serrate ( $ ), a little longer than half the body ; head convex, 

 not carinate or impressed, coarsely, closely, and subrugosely punctate ; thorax a little longer than wide at 

 the base, sides straight and parallel, arcuate near the front angles only, disc convex, sometimes with a 

 fovea each side of the middle, an oblique impression each side of the middle of the base, and a depression 

 at the hind angles, a faint trace of a median carina near the base, surface rather coarsely and closely 

 punctate posteriorly, densely and more finely in front, carina of the hind angles well elevated, anterior 

 supplementary line extending one third towards the base, the posterior line well defined, extending 

 two-thirds to the apex, the outer carina of the juxta-sutural groove extending only two-thirds to the 

 base ; elytra striate, intervals slightly convex, closely muricately punctate, especially at the base ; tip of 



