274 On Some New 



The gense are narrowly and deeply emarginate^ the mesosternal 

 side-pieces completely divided, the mentum rather small, 

 scarcely wider than long and rather deeply seated, gular opening 

 small, and the mandibular scar strongly transverse, oval and 

 somewhat prominent. 



This genus greatly resembles Elissa in general characters, but 

 differs in the nearly obsolete vibrissas, and the shorter basal 

 joint of the tarsi. The single species is probably subaquatic. 



P. cinerea n. sp. — Form rather slender, convex, entirely covered 

 with a dense crust of pale cinereous scales, slightly mottled with brown 

 on the head and elytra, and with very feebly defined vittse of the same 

 tint at the sides and along the middle of the pronotum. Head and 

 beak small, distinctly longer than wide; front strongly and coarsely 

 rugulose, convex; beak feebly impressed, truncate and feebly trisinuate 

 at apex; alae small; antennae fuscous. Prothorax widest at anterior 

 third, where it is distinctly wider than the head and very slightly wider 

 than long; sides broadly rounded anteriorly, feebly convergent and 

 nearly straight thence to the base, not at all constricted near the apex; 

 base transversely truncate, subequalto the apex; the latter very broadly 

 arcuate; disk rather coarsely, deeply, irregularly and densely punctate. 

 Elytra elongate-oval, two-thirds longer than wide, two- thirds wider 

 than the prothorax; sides parallel and nearly straight in the middle; 

 humeri broadly rounded, not at all prominent; disk convex, coarsely 

 and moderately deeply striate; strise rather closely, coarsely, 'and deeply 

 punctate; intervals feebly convex, each with a row of minute erect 

 scales. Under surface with small erect setae, slightly denser on the 

 tibiae; tarsi setose beneath. Length 3.0 mm. 



Texas (El Paso). Mr. G. W. Dunn. 



The surface of the head and prothorax is covered rather 

 densely with very small, erect, scale-like setae, and the latter has, 

 near the anterior margin and laterally, and also along the basal 

 margin, a few widely distant erect scales, which are slender and 

 rather long. This species is apparently much less abundant, 

 but few specimens having been obtained. 



SCYTHROPUS Sch. 



The species of this genus are somewhat numerous ^ and differ 

 considerably amongst themselves in abdominal structure, as 



1 One of the finest species of this genus, represented by a single speci- 

 men from Colorado in the cabinet of ^^Dr. Le Conte, has yet to be de- 

 scribed. 



