310 REVISION OF THE TENEBRIONIDjE OF AMERICA, 



The thorax is finel) and very sp irs< 1\ punctured, the elytra coarsely and densely, with a 

 faint tendency to the arrangement of the puncture- in lines, more evident in the smoother 

 varieties of the species. Cognata, Hald., is merely a more robust and rather smoother 

 form of extricata. 



11 curs abundantly on the plains of Kansas and Nebraska, and some few have been 

 obtained in Utah and eastern Oregon. 



Length . 12-.56 inch. 



Group II. 



This group is distinguished readily from the preceding, by having the spurs of the an- 

 terior tibise very nearly equal in size and in no way differing from each other in thickness 



and shapi . 



Section I. contains the bulk of the species of the group, and may be recognised by the 

 smooth, sparsel) punctured thorax. 



The three following species differ from all the other-, by having all the femora of each 

 sex armed with a very distinct tooth, large and strong in the first two, small in the last. 

 The tibiae are also more strongly curved than in an) others of the genus. 



E. militaris, n. sp., black, moderately shining, elongate, similar in form to femorata. Thorax '■.., sub quadrate, 

 moderately convex, -iil<-- rounded, feebhj converging al base; apex rather deeply emarginate, angles acute, nol denti- 

 form; base feeblj rounded, angles no! prominent; J thorax one-third broader than long, more convex at sides, moder- 

 ately rounded, uol converging ;a base; apes as in male, base truncate or feebly rounded, notably broader than apex, 

 5 not prominent. Elytra elong ite oval, strongly attenuate behind, verj convex above, with distant rows of rather 



.ml distant punctures. Legs coarsely punctured. Presternum prolonged, horizontally mucronate. Mesosternum 

 slightlj concave. Length .86 1.00 inch. 



Lower California. Mr. Wm. M. Gabb. 



The se\es of this species differ from each other, in the form of the elytra, the female 

 as usual being the broader and more robust, and also in the form of the thorax. In the 

 ■ there is scarcely anj difference between the thoraces of femorata and militaris, while 

 that of the female of the latter species is much broader, the side- regularly rounded to the 

 basal angles and the base broader near the apex. In both s,.\ r s all the femora are armed 

 with a ver) strong triangidar tooth, broader but less acute than armata. This species 

 differs from armata in the character last given, and also in its much lis- prominent and 

 never dentiform apical thoracic angles. The elytra approach the form of femorata, and 

 are more attenuate behind than in armata. The peculiar form of thorax causes the fe- 

 male to appear more obtuse in front. 



E. armata, I.e.. Ann. Lye. 5, KM; Tl -on. Arcana I, PI. XII. Qg. 2. 



The elytra of this species are less attenuate, rather more suddenl) declivous behind 



than either of tin' other- of the group. The anterior angles of the prothorax are acute. 

 usuall) prominent and dentiform. Further comparison between this and the preceding 



