74 
CATALOGUE OF 
tt Tip of the head lengthened on each side at the 
base of the rostrum into a short porrect 
obtuse spine. First joint. of the rostrum 
extending to the hind border of the eyes, 
about equal in length to the third and 
fourth joints together. Fore femora some- 
what incrassated, with little spines beneath 
in two series. - - - -  GNATHOBLEDA. 
b. Head unarmed beneath or with simple spines, 
rarely with a basal lateral ‘slightly forked 
spine. 
* Ocelli not or but slightly elevated. Post-ocular 
part of the head not narrowed hindward, or 
but slightly and gradually so. 
+ Fore tibia at the tips with a long spongy 
furrow. 
t Body very narrow, much elongated. Head 
small, oblong, with a porrect obtuse little 
spine on each side at the base of the rostrum. 
Ante-ocular and post-ocular parts of the head 
almost equal in length, the latter a little 
broader than the former, hardly narrowed 
hindward, suddenly straightened at the 
extreme base on each side beneath with 
many rather stout spines, which are seti- 
gerous at the tips. Antenne short, inserted 
near the tip of the head; first joint much 
shorter than the head, extending far beyond 
its tip. First joint of the rostrum extend- 
ing to the middle of the eyes, about 
equal in length to the third and fourth joints 
together. Eyes rounded, entire. Prothorax 
very long, subtruncate at the base, more 
than twice longer than the head, slightly 
narrowed forward from the base beyond the 
middle, slightly widened from thence to the 
tip, not straightened; side angles rounded, 
not prominent. Fore wings somewhat 
shorter than the abdomen; tip of the mem- 
brane lengthened into an acute angle. 
Abdomen of the male at least, with almost 
parallel sides; apical segment acutely 
bilobed at the tip inthe male; lobes apart, 
lengthened hindward. Legs short; fore 
coxe a litle longer than thick ; fore femora 
thickened, with many little spines beneath; 
fore tibie slightly shorter than the fore 
femora; hind femora extending a little 
beyond the hind border of the fourth abdo- 
minal segment. = - - - CTENOTRACHELUS. 
