402 BULLETIN 63, UNITED STATES NATIONAL MUSEUM. 



in nigr'ma. This character has not been observed elsewhere in the 

 genus Eleodes. The surface of the middle lobe is finely scabrous; the 

 lateral lobes bear a few rather long seta?, while the middle lobe is not 

 noticeably setigerous. 



The prosternum is not strongly protuberant ventrally with the 

 coxae, and distinctly setigerous. Between the coxse it is more or less 

 convex antero-posteriorly. sometimes horizontal. Generally with a 

 small mucro behind, sometimes nearly vertically truncate with a 

 mucronate angle. 



The mesosternum is arcuately declivous and more or less concave, 

 with numerous small seta^. 



The metasternum laterally between the coxae is as long as the width 

 of a mesotibia at middle. 



The abdominal process is quadrate (male) or subquadrate (female) 

 and about a fourth (male) of its width broader than the metasternal 

 salient or subequal to it (female). 



The jjost-coxal part of the first segment is equal in length to the 

 second ; the latter is twice as long as the fourth. 



Tn the male the third is about three-fourths longer than the fourth, 

 in the female it is about two-thirds longer than the same segment. 



The profemora are clavate, the mesofemora slightly swollen, and 

 the metafemora somewhat narrowing toward base; the grooves are 

 shallow and flat, the margins feebly subcariniform and sometimes 

 feebly asperulate. The anterior margin of the profemoral grooves 

 is not so distinctly sublaminate internal to the apical sinuation as in 

 nignna. On the meso- and metafemora the grooves vary as to their 

 degree of convergence before evanescence. 



The tibiae are without tarsal grooves; the external faces of the meso- 

 and metatibia) are somewhat flattened but not glabrous, and the 

 articular cavities are closed. The protibia? may or may not be 

 carinate externally. 



The setae and spinules on the femora and tibiae are usually bhick- 

 ish, but frequently somewhat ferruginous on the tibiae; on the tarsi 

 they are nearly always ferruginous. 



The tarsi are somewhat slender, but frequently they api)ear mod- 

 erately stout. 



Tarsal formula : 



Pro. Meso. Met a. Metatibia. 



Male.— 2|^ 3^ 3§ 5^ 



Fcuiiile.— 2 ' ^ 3i .'i 



ELEODES DISSIMILIS var. NEVADENSIS new. 



Cylindrico-fusiform (o ovate, elongate, moderately depressed, 

 opaque, more or less alutaceous and slender; thorax obsoletely punc- 

 tulate; elytra striato-punctate; antenucC, tibiae, and tarsi with the 



