150 THE CANADIAN ENTOMOLOGIST. 



fifth. Thorax with very strong separated punctures, those on the 

 scutellum very sparse ; basal triangular space of metathorax well marked, 

 divided medially by a furrow, almost smooth (some specimens show traces 

 of longitudinal and others transverse striae); four posterior tibiae and 

 tarsi strongly spinose ; the anterior tibiae strongly ciliated ; spur of 

 anterior tibiae obliquely truncate ; wings hyaline, a fuscous cloud covers 

 the marginal, upper portion of third submarginal, the second submarginal 

 and parts of the first, second and third discoidal cells ; stigma and costal 

 nervure yellowish ; transverse medial and the cubital nervures of the 

 hindwing interstitial. Abdomen with strong, separated punctures 

 beneath the middle of the second and the basal half of the third and fourth 

 segments, impunctate ; pygidium short and broad, the lateral carinas or 

 margines not extending to the base of the segment. Black ; a broad 

 elongate mark on the cheeks, prothorax, dorsulum and mesopleurte in 

 part, the metathorax, except enclosed space at base and a somewhat 

 similarly shaped mark on the posterior face, the legs, variegated with 

 yellow, the first abdominal segment above, except apical margin, and the 

 last two segments, all rufous ; face, clypeus, basal half of mandibles, 

 antennae, prothorax above, a large blotch on the mesopleura anteriorly, 

 scutellum and a broad band on apical margin of segments 1-4 above, and 

 on segments two aud three beneath, all yellow ; the antennae slightly 

 inclining to brownish. Length, lo-ii mm. 



Var. — One specimen from Colorado, instead of being black, is entirely 

 rufous, but with the same yellow ornamentation. 



Montana and Col. 



GORYTES NEVADENSIS. 



$ . — Head as broad as the thorax ; ocellar region rather distinctly 

 raised ; ocelli forming a low triangle ; frontal furrow distinct, but not 

 Strong ; eyes distinctly converging towards the clypeus ; clypeus convex, 

 with large, scattered punctures, the anterior margin, a little incurved; 

 scape of antennae not as long as the width of the clypeus medially, the 

 flagellum long, not thickened ; third antennal joint about one-third longer 

 than the fourth ; front strongly punctured, the occiput finely and sparsely 

 so. Dorsulum with sparse, large punctures, with four impressed, parallel 

 lines basally, which do not extend beyond the middle ; mesopleurae with 

 exceedingly fine punctures ; suture between dorsulum and scutellum 

 foveolate ; enclosed space cf metathorax strongly sulcate medially, with 

 9-10 strong radiating strise on each side of the sulcus, the striations 



