194 E. T. CRESSOX. 



black, quadrate, abrupt laterally and abruptly truncate at tip, above minutely 

 and transversely aciculated, the disc with four or five approximate longi- 

 tudinal carina}, posterior face transversely aciculated, the sides longitudinally 

 so; tegulse ferruginous; wings tinged with yellowish-fuscous; legs short, 

 robust, pale ferruginous, anterior coxaj black, all the femora incrassate; abdo- 

 men elongate ovate, smooth and polished, black, immaculate, apex ferruginous. 

 Length .26 inch. 



Oue specimen. (Coll. (J. W. Belfrage.) A very conspicuous 

 species, resembling rujipc^ in general form, but much larger and 

 diiferently colored. 



Kpyris rufipes. 



Belhi/lus rujipes, Say, Long'.s 2d Exped. ii., p. "29. 

 Two specimens. (BellVage.) 



DORYLID^E. 



I^al>idii!i> Sayi. 



Labidus Saj/i, Ilald. Stansb. Salt Lake Exped. Append, p. ."07, pi. 9, fig. 1—3. 

 Three % specimens. (Ijelfrage; Heiligbrodt.J 



I..abicliis inexieaiiii'^. 



Labidus incxicanus, Smith, Brit. Mus. Cat. vii. p. 7. 

 Eight % specimens. (Belfrage.) 



Ijabidii^t Ilarri^^ii. 



Labidus harrisii, Hald. Stansb. Salt Lake Exped. Append, p. '.',67, pi. 9, tig. 4. 

 Eleven % specimens. (Belfrage.) 



liabidiis nigrescens, n. sp. 



% . — Black, clothed with a short appressed yellowish silky pubescence, 

 long on vertex and face; eyes smaller than usual, prominent; ocelli approxi- 

 mate, a broad space between them and the eyes; before anterior ocellus two 

 j)rominent longitudinal ridges; mandibles robust, reddish at tips; antennae as 

 long as head and thorax, dark ferruginous; thorax above gibbous anteriorly 

 and posteriorly, rather closely and finely punctured; mcsothorax with a cen- 

 tral longitudinal ridge extending from disc to anterior margin; wings uni- 

 formly pale fuliginous, stigma tolerably large and with the nervures black, 

 marginal cell elongate triangular, pointed at apex, second submarginal coil 

 irregularly elongate quadrangular, narrower at apex, receiving the recurrent 

 nervure about one-third from base; legs slender, rufo-piceous, knees and tars^i 

 paler, tip of posterior tarsi not quite reaching to apex of abdomen : abdomen 

 strongly sericeous, densely and minutely punctured, apical margin of the seg- 

 ments slightly constricted and rufo-piceous, the peduncle very transverse, base 

 broadly not deeply concave with sides rounded, apex truncate, pubescent, an- 

 gles subobtuse, lateral margin not raised, apical segment rounded, not com- 

 jiressed, except at the extreme apex which is acute and ferruginous, apical 

 Ventral segment ferruginous, produced at tip into a bilobate, bicarinate, scale- 

 Uke process, the tip of each lobe acute and somewhat recurved. Length .15 

 inch. 



One specimen. (Coll. G. W. Belfrage.) 



