HEMIPTERA HETEROPTERA. 
69 
a little acute tubercle behind the eyes; 
ocelliferous part not elevated. First joint 
of the rostrum extending 1 nearly to the 
middle of the eyes; second more than twice 
the length of the first. Antennae genicu- 
lated ; first joint somewhat thick. Anal seg- 
ment of the female elongated, bilobed. Fore 
femora thick, with a spine beneath towards 
the tip. 
A. Tylus compressed, lengthened, porrect, 
acute, distinct from the upper apical 
process. Head, prothorax and the border 
of the abdomen unarmed. Side angles of 
the prothorax prominent, not rounded. Fore 
wings much shortened. - 
B. Tylus elongated into a compressed spine, 
which touches the upper apical process. 
Head above, prothorax and border of the 
abdomen with little spines. Each side angle 
of the prothorax elongated outward into a 
spine; hind angles elongated and rounded 
backward. Fore wings extending to the tip 
of the abdomen ; both areolets emitting a 
vein from the outer apical angle; the vein 
closing the hind areolet hindward abbre- 
viated. - 
Subfam. 2. ECTINODERIDA. 
A. Prothorax much elongated hindward and 
extending beyond the tip of the sculellum. 
Fore tibiae above with a groove for the 
reception of the joints of the short tarsi. 
Claws, at least the hind pair, toothed or with 
appendages. - - - - 
B. Thorax not extending hindward beyond the tip 
of the scutellum. Fore tibiae with no apical 
furrow. Fore tarsi incrassated, not or hardly 
shorter than the hind tarsi. Claws simple. 
a. First joint of the antenuae longer than any of 
the others, somewhat longer than the head ; 
second joint shorter than the first. 
b. First joint of the antennae shorter than any of 
the others, less than half the length of the 
head ; second joint longest of all, thrice the 
length of the first. - - - - 
Subfam. 3. SALYAVATIDA. 
A. Fore tibiae at the tips above with no oblong 
femora for the reception of the tarsi, 
a. Fore tibiae dilated and leaf-like on each side, - 
Dicrotelus. 
Nvllids. 
Diaspidius. 
Ectixoderus. 
Amulids. 
Petalochirus, 
