114: NORTH AMERICAN" 



minal segments ilistinctly narrower than the elytra ; sides nearly parallel : 

 surface strongly convex, finely rather closely and evenly punctulate ; first 

 two dorsals with two extremely short widely divergent and very widely 

 separated basal carinae. Legs long and slender. Length 1.4 mm. 



Cohjmbiis, Texas, 1. 



Tlie fourth joint of the maxillary pal[>i i.s large, actiminate and 

 widest near the base. The under surface of the head in the type 

 specimen does not possess the loose pad of sensitive setae, but the 

 setae appear to have been removed by abrasion. 



17. E. arciiatllS Lee. — Bost. Journ. VI, p. 10(3. — Form very moderately 

 robust : color throughout ferruginous, legs and antennae slightly paler and 

 more tlavate ; pubescence short, fine, sparse and rather inconspicuous ; in- 

 teguments highly polished. Head very slightly wider tJian long ; ]X)sterior 

 angles rather pronounced, narrowly rounded ; eyes small, prominent ; inter- 

 ocular surface impnnctate, having two small round spongy-pubescent foveae 

 on a line with the midille of the eyes and mutually twice as distant as either 

 from the eye ; intermediate surface entire, strongly convex ; canaliculations 

 strongly convergent, feebly impressed, short and joined anteriorly by a 

 broadly arcuate channel behind the transverse epistomal ridge which is 

 moderately prominent; supra-antennal tuberculations elongated, rather con- 

 spicuous, each crossed by a narrow channel ; labrura three times as wide as 

 long, constricted at base, broadly sinuate anteriorly, angles rounded, bear- 

 ing six or seven setae along the anterior edge resembling those of Ilarpalus : 

 antennae one-half longer than the head, very si>arsely setose toward the 

 base, eleventh joint conical, acuminate, elongated, as long as the four pre- 

 ceding joints together. Prothorax widest at the middle Avhere it is as wide 

 as the head and slightly narrower than long ; sides thence equally and very 

 strongly convergent anteriorly and posteriorly, very strongly arcuate in 

 the former and feebly sinuate in the latter direction ; apex slightly shorter 

 than the base, equally and feel)ly arcuate ; disk strongly and evenly c-onvex, 

 impuuctate, having at one-fourth the length from tlie base a transverse 

 channel in the form of a posteriorly pointed cusp, cusp-point slightly pro- 

 longed posteriorly in the form of a nude punctiform impression, arms termi- 

 nating laterally in rather large nude deeply impressed foveae. Elytra at 

 base just visibly wider than the pronotum ; sides somewliat strongly diver- 

 gent, one-third longer than the width at base, strongly and evenly arcuate 

 throughout : together transversely truncate behind ; suture scarcely one- 

 third longer than the jironotum ; disk rather convex, impuuctate; sutural 

 striae arcuate, feeble ; basal canaliculations mther strong, disappearing at 

 one-third the length from the base ; humeral protuberances rather strong. 

 Abdominal segments increasing very slightly in width, first slightly nar- 

 rowir than the contiguous elytra ; surface imj)unctate, convex ; border 

 strong ; first segment without dorsal carinae. Legs long and slender ; 

 second joint of the posterior tarsi very slender, greatly elongated, nearly 

 twice as long as the last joint. Length 1.0-1.2 nuu. 



