132 Psyche [August 
BB. Basal segment of the antenne not reaching apex of tylus. 
Rostrum extending to the middle of the venter. Head 
longer than broad’ pyre ees tde. eet Orsillacis Barb. 
AA. Apical margin of corium inwardly sinuate. Scutellum near 
base with a more or less distinct transverse ridge; base before 
this depressed; longitudinally carinate behind ridge. Apical 
angle of the antenniferous tubercles prominent, acute or sub- 
acute. Sixth dorsal segment of the male rounded. Genital 
segmentsohmaletoveater ee pera e eter. « Tribe Orsillini Stal. 
D. Basal segment of antennz surpassing apex of 
tylus. Head moderately elongate. Rostrum 
short, its apex scarcely reaching upon the abdomen. 
E. Costal margins of hemielytra — straight 
throughout, parallel or converging poste- 
riorly. Eyes prominent, the exposed area 
back of eyes greater than half of the width 
of the eyes. Buccule less than lialf the 
length of gular area. Apex of orifices exte- 
riorly, prominently auriculate 
Ortholomus Stal. 
EE. Costal margin of the corium straight only 
at the base, if at all. Eyes not so prominent. 
Buccule variable. Apex of orifices suddenly 
abbreviated, rarely subauriculate 
‘ Nysius Dall. 
DD. Basal segment of antenne not reaching apex 
of tylus. Head much elongated. Rostrum long, 
reaching to or beyond the middle of the venter 
Belonochilus Uhl. 
Key to the Tribes and Genera of the Subfamily Cymine. 
A. Head without a curved longitudinal sulcus before each ocellus; 
apical angle of antenniferous tubercles not prominent. Basal 
segment of antennze surpassing apex of tylus; fourth segment of 
antenne longer than third. Scutellum equilateral with the 
claval commissure shorter than scutellum. Hemielytra hyaline, 
provided with few punctures. Orifices exteriorly extended and 
produced into a tooth at apex..... Tribe Ischnorrhynchini Stal. 
B. Head porrect, not abruptly deflexed in front. Eyes nearly 
