478 BULLETIN 63, UNITED STATES NATIONAL MUSEUM. 



Buccal fTocesses of the gense strongly and siibacutely produced 

 aiiteriorl^^ over the base of the maxilla?. Mandibles emarginate at 

 tip, cusps apparently equal. 



Prothorax moderately transverse and margined ; pronotal apex 

 deepl}'' and broadly emarginate (Plate 12, fig. 39), base truncate; pro- 

 sternum longitudinally impressed before the coxa^. prominent in the 

 median line and continuously so with the intercoxal portion, which 

 is mucronate posteriorly ; anterior margin of the prosternum arcuate 

 at middle and broadly sinuate laterall}^ 



Elytra with the disc not strongly deflexed laterally, distinctly'' 

 margined by the superior border of the wide epipleurae which occupy 

 the whole of the inflexed side, the superior epipleural margin visible 

 from above throughout its entire length. 



MesosteniiDii and metasternum short and not prominent ventrally. 

 Anteriorly the mesosterniim is concave, posteriorly meeting the meta- 

 sternal intercoxal salient at middle of the coxse, suture slightly arcu- 

 ate. Metasternal epimera ver}^ distinct. Intercoxal process of the 

 first abdominal segment rectangular and broad, as usual. 



Legs rather short, femora moderately compressed and widest near 

 the middle; tibiae slighth^ but distinctly dilated apically, feebh' but 

 characteristically arcuate, spurs small and normal; tarsi moderate in 

 length and thickness, joints proportioned as in the other members of 

 the tribe, spinous beneath with the plantar grooves distinct. 



The tribal characters are distinct and the species has a very 

 BlapyUs-like form and the general structure is the same. The types 

 were for years associated with Eleodcs paroicollis^ scahrom^ and 

 cordata in my collection. 



The produced buccal processes of the gente are as marked as in 

 Nyctoporis. Eleodcs hlanchardi presents the same condition, but to 

 a much less degree. 



The maxilhiry galea is evidently quite different froni that observed 

 in Eleodcs and apparently two-jointed. I could not determine posi- 

 tively without dissection. 



Salient (/eneric characters. — Papist oma emarginate, sides of front 

 not dilated, buccal processes of the genae produced (Plate 8, fig. 2J:«), 

 mentum concave; impressed sides and prominent middle of the pro- 

 sternum, the latter with the anterior margin arcuate at middle and 

 sinuate laterally (Plate 8, fig. 24'') ; wide epipleura^, elytral disc 

 not inflexed at the sides; femora compressed and widest at middle, 

 tibia? arcuate and evidently dilated apically. 



These characters define a very distinct-genus, very unlike anything 

 else found in the United States. 



From its southern habitat T suspect that it may be related to some 

 Mexican form and have carefully searched all the literature to de- 

 termine that fact, but w'ithout avail. At present I have no way of 



