THE STINK-BUG FAMILY. 93 
Brochymena annulata Fab. (The Angular Gray Tree Bug). 
This insect has a square head with the front rather short, 
and a deep notch on each side. The surface is unevenly dotted 
with black; the membrane is also distinctly marbled with black; 
the side-margins of the prothorax are moderately toothed; the 
shoulders are oblique, feebly curved, and knobbed. The insect, 
according to Prof. Uhler, is notwithstanding its long and slender 
rostrum a great enemy to caterpillars and other insects; it 
searches for them upon the leaves and twigs of a great variety of 
trees in cities and in the thin woods in the adjacent country. 
But it has also other habits not so useful, and its presence upon 
young apple trees in nurseries and orchards is not desired, as 
here it is frequently seen engaged in sucking the sap from the 
tender ends of still green twigs. It is shown in Fig. 91. 
Similar to the species of Euschistus already mentioned are 
the insects in the genus Podisus; they belong, however, to a 
different sub-family, the Asopina. 
Fic. 92.—Podisus spinosus Dall. 
Original. 
Podisus spinosus Dall. (The Spined Tree Bug). 
This bug, illustrated in Fig. 92, is a well known insect, 
frequently mentioned in entomological literature as destroying 
the potato-beetles, currant-worms and other well known pests. 
All insects belonging to this genus are very similar in general 
appearance, but the one under discussion has the angles of the 
prothorax prolonged into spines. It measures about four-tenths 
