McNeill revision of the XRUXALINiE OF NORTH AMERICA. 273 



company with a median carina wliich scarcely extends forward farther 

 than the posterior margin of the scuteUum. The lateral foveolje are 

 deeply impressed, sub-triangular in shape, and less than twice 

 as long as broad; the posterior is at right angles to the lower carina 

 and the upper is the strongly arcuate hypothenuse. The frontal costa 

 is scarcely sulcate, acuminate below and considerably divergent to the 

 ocellus, beyond which it is parallel for some distance and finally again 

 divergent to the clypeus. The face seen from the side is gently arcu- 

 ate and considerably oblique. The antennae are short, scarcely equal- 

 ing the head and pronotum, sub-filiform, a little flattened, and very 

 little expanded apically, and acuminate at the apex. The pronotum 

 is similar to that of Stiraplciira except that there are no carinae on the 

 lateral lobes. The episternal carina is present and the mesosternal 

 and metasternal lobes have the same structure as in that genus. The 

 tegmina exceed the abdomen in both sexes. The former are very 

 slender and the discoidal area is destitute of the intercalary vein and 

 is usually occupied by a single series of cross-veins. The posterior 

 femura are robust and clearly marked with the triangular brown spots 

 usual in this group of the sub-family. The posterior tibiae are reddish 

 or yellowish with the apical spurs on the inner side very unequal. The 

 ovipositor is moderately exerted. 



Psolocssa, Scud., 1S75. Ent. Notes, IV, 86. 



This is a North American genus represented by three species which 

 are all South-western. 



Key to psoloessa. Scud. 



A.i Anterior half of the tegmina not infuscated by the extension of 

 the postocular brown band. Triangular brown spots on the upper 

 face of the posterior femora sharply defined and very distinct. 



B.I Tegmina thickly and rather evenly maculate everywhere except in 

 the scapular area. Ash brown i. — Maciilipennis, Scudder. 



B.2 Tegmina plain, reddish-brown 2. — Ferruginea, Scudder. 



A.2 Anterior half of the tegmina infuscated by the extension of the 

 postocular brown band. Triangular brown spots on the upper face 

 of the posterior femora less distinct 3. — Buddiana, Bruner. 



I. Psoloessa maculipennis. Scud. Fig. 31. 



Psolo'cssa maculipennis, Scud., 1875. Ent. Notes, IV, 87. 

 Psolocssa maculipennis, Bruner, 1883. 3rd. Rept. U. S. Ent. 

 Com., 56. 



