Hebard—Dermaptera and Orthoptera of Hawaii 359 
Kuliouou Valley, Oahu, VII, 25, 1916 and XII, 22, 1918, (P. 
H. Timberlake), 24, [Timberlake and Hebard Colls.]. 
attat, 3500) 10: 4000 fect, III) 20) te 1V,.13, 1919; 4(J.. A. 
Nusche),-2:2, 1 juv., [Hebard Coll.]. 
The intensively colored specimens have the limb markings heavy and 
the head and pronotum pale but heavily marked and suffused to varying 
degrees with very dark brown. Many of the other specimens have the head 
and pronotum immaculate, rather dark reddish-brown. 
In the series from Oahu, a number of females fit the descrip- 
tion of P. exiguum Perkins, as do the males, except that in none 
of the males are the tegmina quite so short as 4 mm. The insect is 
clearly one of the most widely distributed and plastic members of 
the genus, and the synonymy of eviguuim appears to be very pos- 
sible but can not be determined without examination of the pair 
from the Waianae Mountains (Oahu) upon which that name is 
based. 
Examples of the present species, many showing close superfi- 
cial resemblance to individuals of P. pacificum (Scudder), may be 
quickly separated from them by the lesser number of veins in the 
lateral* fields of the tegmina and the ovipositor, the transverse 
suture of which is meso-distad, instead of mesad. The latter type 
is peculiar to pacificum, of the known species of Paratrigonidium. 
Paratrigonidium crepitans Perkins 
1899. Paratrigonidium crepitans Perkins, Fauna Hawaiiensis, 
Hy p.s19. =| oo > Kauai, at 4000: feet:| 
Kanara soo, and 4000: tect, Ii; 29 and IV; 1 1910;-(CJ.-A: 
ieecHe \ij3, Oe [-ELebard ‘Coll:].. 
These females differ from those of P. varians Perkins before us in 
their smaller size, with dorsal surface of head, pronotum, and tegmina sol- 
idly dark brown, causing the paler lateral margins to be conspicuous. 
Paratrigonidium saltator Perkins 
1899. Paratrigonidium saltator Perkins, Fauna Hawatiensis, 
Hi pastOs. (2) ©Olaas (District), Hawaii, at 2000: feet.| 
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