FHebard—Dermaptera and Orthoptera of Hawaii 365 
Mount Tantalus, Oahu, III, 11, 1906, (W. M. Giffard), 14; 
Vit 4, 1902 and -X; 1, 1941, -(O! H. Swezey), 3 juv.2 ; 
Peo, tect, Jl, 23, 1007, 5\(W Ma Giffard) 1 1500 
feet ul, 2, 1000, (W. M. Giffard), i1°9°> 1800 feet. 1X 
15, 1907, (W. M. Giffard), 1?, 1 juv. 6, intensive colora- 
Hon 2000) feet, 1 24, 1900, (W. MGiftard).-1 4, 2.0). 
3 juv. é, (with tegminal and wing pads) ; 2000 feet, VIT, 
29,1909, (J.-Kotmsky)>-1, | Terr. Bd. Agr, a: S; PL A., 
Hebard Coll. and U. S. N. M.]. 
Mount Olympus, Oahu, VI, 3, 1919, (J. A. Kusche; in hol- 
low branch of Freycinetia), 12, 1 juv. 8, (with tegminal 
and wing pads), intensive coloration, [Hebard Coll.]. 
Manoa Cliff Trail, Oahu, IX, 1, 1918, (P. H. Timberlake), 
16, [Timberlake Coll.]. 
Palolo, Oahu, VI, 24, 1917, (J. C. Bridwell), 1 juv. @ (with- 
out tegminal or wing pads), [Bishop Mus.]. 
This handsome insect is decidedly the largest species of the 
genus. Compared with the largest female before us, however, 
the smallest females are seen to have a very different general 
facies, due to their great size reduction and recessive coloration. 
The reduction in limb and cercal length in these, though great, 
is seen to be less marked than the reduction in ovipositor length. 
As a result of the decided size variation in the species, one 
immature male before us in the first of the instars that show 
tegminal and wing pads, is no larger than another immature male 
in the last instar in which the tegminal and wing pads are lacking. 
Compared with P. oahuwensis Perkins, the present insect, 
though slender, is seen to be much more robust than that species, 
while the smallest individuals approximate in size the largest of 
oahuensis, both species being subject to very great size variation. 
Owing to the heavier build, the pronotum of alatus is much 
broader, as is the stridulating area of the male tegmina. In 
females, the ovipositor of a@latus varies from slightly longer to 
over three times as long as the maximum known for oahuensis. 
In addition the present species shows a distinctive and_ striking 
[ 63 ] 
