432 MODERN CLASSIFICATION OF INSECTS. 

the last forming an elongated seta, occasionally apparently articulated 
at the base (fig. 116. 3. ant. of Ledra), and inserted between, not 
beneath the eyes. 
The ocelli also, two in number, are situated either on the forehead 
or the face (fig. 116. 16. head of Selenocephalus beneath, with the 
ocelli on the extreme edge of the forehead ; 116.8. face of Centrotus) ; 
the head is rarely produced in front into a proboscis ; the legs are fitted 
for leaping, and the species are destitute of sonorous organs. 
This family is very extensive, consisting of species of small size, 
and in one tribe comprising many most singular creatures; the 
majority of the latter are, however, tropical. The head is of small 
or moderate size, often very low, with the face broad (fig. 116. 2. 16.), 
the eyes lateral, the antenne inserted in the middle or lower part of 
the face ; the promuscis short ( fig. 116.16.), or but of moderate length 
(jig. 116. 8., and 116. 2., head of Ledra beneath) and 3-jointed ; the 
prothorax very variable in form and size, and in the sub-family Cer- 
copides being the portion of the body which assumes the remarkable 
forms above alluded to; instances of this are represented in fig. 116. 
7, Centrotus biclavatus Westw.; fig. 116.11. Heteronotus nigricans 
Lap., and fig. 116. 13. Membracis —? ; but this part exhibits an almost 
endless variety and grotesqueness of form and anomalous development. 
In the Tettigonides the prothorax is of the ordinary form and size, 
leaving the scutellum exposed (as in fig. 116.1. Ledra aurita); the 

H. Schiiffer. Nomenclator Entomologicus, and Continuation of Panzer. 
And the general works of Linneus, Fubricius, Panzer, Palisot Beauvois, Perty, 
Guérin, Griffith (An. Kingd.), Curtis, §e. (Eneycl. Meth. tom. x.). 
