EEVISION OF ELEODTINI BLATSDELL. 323 



strongly convex; anterior tibiae somewhat constricted at base; an- 

 terior tarsi with the first joint slightly thickened at tip beneath, and 

 there clothed with a small tuft of piceous spinules. 



Measurements. — Female : Length, 16.2 mm. ; width, 8 mm. 



Genital cliaracters., male. — Not studied. 



Female. — Genital segment triangular and somewhat dej^ressed, 

 glabrous, very sparsely setose, and well chitinized. 



Valvula (Plate 5, fig. 21). — Dorsal plate suboblong, slightly widest 

 at base, external border slightly convergent apically and slightly 

 explanate; surface somewhat outwardly declivous, feebly convex 

 but slightly concave before the apex, glabrous, Avith a few^ coarse, 

 scattered, setigerous punctures, seta? short ; external border feebly 

 arcuate or straight, passing arcuately into the apical border, the latter 

 defined from the apical surface, angle not evident; internal border 

 more or less feebly sinuous. 



Apex fully chitinized, feebly convex above, scarcely excurved, 

 rather broadly rounded at tip, with a number of moderately short 

 seta> over the base along the apical margin of the dorsal plate; in- 

 ternal valvular membrane densely clothed with very short setae; fossa 

 an excavation at the base of the external surface of the apex and 

 beneath the apical margin of the dorsal plate. 



Appendage small and mammilliform, not conspicuous, A\'ith a tuft 

 of moderately long setse at tip. 



Saperior pudendal membrane longitudinally rugulose and attaining 

 the apical third of the dorsal plate. 



Verifrolateral surfaces flattened centrally with the surface lines 

 straight when view^ed longitudinally, laterally moderately arcuate 

 and sparsely setose; surface glabrous; submarginal groove distinct 

 beneath the slightly explanate external border of the dorsal plate 

 and terminating in the fossa. Apex somewhat concave beneath and 

 somewhat densely set Avith short seta\ Internal margins of the 

 valves contiguous at basal two-thirds; fissure apical, apices not con- 

 tiguous. Inferior pudendal membrane not visible. 



Ilahitat. — Colorado (no special locality indicated by the labels). 



Number of specimens studied, 1 female, which was carefully com- 

 pared with type and pronounced typical by Mr. Blanchard; the 

 specimen is in his collection. 



Type in the LeConte collection. 



Typc-docality. — Colorado. 



Salient type-characters. — Somewhat shining. Head and thorax 

 thickly and finely pimctate, the latter with apex scarcely emarginate; 

 apical angles acute, not prominent ; sides finely margined and strongly 

 rounded, not sinuate posteriorly; base strongly truncate and scarcely 

 narrower than the apex; basal angles obtuse. Elytra with the dor- 

 sum slightly convex, apex strongly declivous, sides suddenly inflexed, 



