326 PSYCHE. [January ,3,6. 



6. Sides of pionotum elongate, the length on dorsal margin greater 

 than the depth (Fig. 7b). Lateral carinae nearly or quite 

 parallel and disc unicolorous (Figs. 7, B). Foveolae absent. 



7. Sides of pronotum nearly vertical, flat above, meeting disc at 



nearly a right angle ; lateral carinae parallel throughout (Figs. 

 7, 7a). (Gen. 6, Dir/iromorp/ia, gen. nov.). Sp. 7, D. viridis. 

 [7'. Sides of pronotum convex above ; carinae slightly divergent on 

 metazona (Figs. B, Ba). ( Clinocep/ialiis, gen. nov.) 



C. elegans sp. nov.] 



6'. Sides of pronotum not elongate (Fig. Sd). Lateral carinae more 



or less divergent before and behind, and disc usually parti-colored 



on metazona (Figs. 8, 9, 10). Foveolae usually present on front 



margin of vertex (Fig. 8c). . . . {Gen. "j, Orpk^ila.) 



8. Vertex of head about rectangular, or a little acute in (J ; a little 



narrowed between eyes ; its central depression removed from 

 apex one-third ( (?) to one-fourth (?) the width of the veite.K ; 

 foveolae distinct, narrowly triangular. Lateral carinae of pro- 

 notum strongly incurved, and the distance between them at 

 hind margin much greater than at front margin. Prozona and 

 metazona ( Fig. 7 ) about equal on midline. Tegmina passing 

 hind femora ; apex scarcely tapering, sides sub-parallel ; ulnar 

 area in ^ usually closely reticulated (sometimes with spurious 

 vein), but little wider than discoidal area ; 9 with ulnar and 

 discoidal areas of ecjual width, the anterior ulnar vein parallel to 

 radial and the ulnar area divided by a long spurious vein. Apex 

 of wings usually with well-developed spurious veins between 

 branches of radial vein. (Figs. S-Se). Sp. S, O. macuUpeniiis. 

 8'. Vertex of head blunt, rounded, obtuse ( ? ), or rectangular ((?) ; 

 scarcely narrowed between eyes ; its central depression close to 

 apex ; foveolae shallow, triangular, scarcely discernible. Lat- 

 eral carinae of pronotum little incurveil, the distance between 

 them but little greater at hind than at front margin, especially 

 in 9 . Prozona longer tlian metazona. Tegmina about reach- 

 ing end of hind femora, often shorter, sometimes longer, taper- 

 ing toward apex ; ulnar area in $ coarsely, often regularly, 

 reticulated, the anterior ulnar vein strongly apjjroximated to 

 the radial ; in 9 usually slightly but distinctly nearer the radial, 

 the widest part of the ulnar area wider than the discoidal area, 

 spurious vein poorly developed or absent. Apex of wings 

 rarely with spurious veins between the branches of radial. 

 (Figs. 9-9C.) ..... Sp. 9, O. acqiialis. 



