Hebard—Dermaptera and Orthoptera of Hawaii 303 
pacificum are similar in having their internal margins armed with 
from 1 to 4 minute,” though well-developed, teeth. 
The species is reported as found throughout Hawaii, in the 
mountain forests and especially in damp and shady places. 
ENEOPTERINAE 
PROGNATHOGRYLLUS Brunner 
1895. Prognathogryllus Brunner, Proc. Zool. Soc. London, 
1895, p. 806. 
1899. Aphonogryllus Perkins, Fauna Hawaiiensis, II, p. 26. 
1899. Nesogryllus Perkins, Fauna Hawaiiensis, II, p. 27. 
Genotype, selected by Kirby,"? Prognathogryllus alatus Brun- 
ner. 
The synonymy of Nesogryllus, due to the sexual dissimilarity 
shown in the genus, was pointed out by Perkins in 1910," having 
been obscurely indicated in 1906. 
Failure to recognize the immature condition resulted in the 
description of the genus Aphonogryllus. In the earlier instars of 
Prognathogryllus tegmina and wings are absent, the former alone 
indicated by lateral lobation of the mesonotum. Moreover, no trace 
of a tympanum on the cephalic tibiae exists, this being first indi- 
cated merely by a slight depression in the later instars and fully 
developed only in the aduit. Noting such dissimilarity, Perkins 
described Aphonogryllus, based on immature males of the present 
genus. 
In all of the Prognathogryllides the cerci are not longer than 
the total length of the caudal tarsi, except in females of the present 
” The smallest of these teeth have evidently been worn off in some 
examples. This condition may account for the minimum number indicated. 
In some specimens of grande, the largest species of the genus, five such 
teeth are visible. 
PES ye Catan © nthe. lle pse1OOsGlOO6))): 
* Fauna Hawaiiensis, II, p. 680. 
* Proc. Hawaiian Ent. Soc., I, p. 50. 
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