338 REVISION OF THE I I \ HililoNIIi.K OF AMERK \. 



well developed. The middle lobe is also prominent along the middle and in front, the 

 lateral lobes with acute angles. The epipleurce extend beyond the last ventral suture. 

 The hind coxa: though rather widelj separated, have the intercoxal process oval, rounded 

 in front. The males have the tibiae more stronglj annate than the other >e\. the hinder 

 tibiae being armed near the tip with an acute tooth. The femora in both sexes are 

 strongly clavate and slightl) flattened. The only species known i- winged. 



M. Isevis, Oliv., Tenebrio Ent. 3, 10. Merinus) Lee, loc. cit., p. 231. 



\ large, elongate, sub-opaque, black insect, found not uncommonly under hark in the 

 i stem and Middle States, and more rarely in Canada. Easily known by its clavate 

 femora and the peculiar armature of the hinder tibiae of male. 



Length .10-1.0-1 inch. 



PACHYURGUS, /. 



Pacbyurgus, Lee, Class. C»l. N. A.mer., p. 230. 



I iitt'.rs from the preceding genus, in the mentum being nearlj flat in the middle and 

 emarginate in front, with acute angles. The femora are also clavate. The only specimen 

 known to me is a female; the males may have the posterior tibiae armed in Merinus. It 

 is doubtful whether these two genera should be retained as distinct. The genera ofTene- 

 brionini differ general!) so slightly from each other that these may be retained as distinct 

 until the male shall become known to us. 



I', a reus, Mels., Iphthimus Proc. Acad. '■'•. 65. Lee, Paehyi cit., p. 231. 



This species is similar in form to M. Icevis. It has a metallic bronzed, shining surface. 

 The elytra have stria' with fine punctures, becoming rather less evident on the sides and 

 at the apex. 



Length .(>"i inch. 



The specimen in the cabinet of Dr. Leconte is the type of Melsheimer, and the onlj 

 one known. It is probable with this, as has already been discovered with other species, 

 that the insect is a foreign (South American!) form introduced by mistake, and described 

 as North American. 



I" ['IS. Fabr. 

 Upis, Fabr., Km. Syst. 1 1, p. 75. 



In this genus the mentum is oval, prominent in front, with a median longitudinal ele- 

 vation and a groove on each side. The femora, though thickened, an' not so suddenlj 

 nor s,> stronglj clavate as in the two preceding genera. The epipleurae are not complete 

 behind, though reaching beyond the last ventral suture. 



I". ceramboides, Linn., i-ttelabus) Syst. Nat. II, p. 621. Fab., Ppis) loe cit. ret 3ay, Loug's Ex- 



ped. >. '.'7'.'. 



This species common in Europe, is also found abundantly in the northern portion ol 

 our own Continent, occurring as far south as Canada. 

 Length .54-.75 inch. 



