Neuroptera of the Hawatian Islands. 235 
row yellowish longitudinal border (more conspicuous in the 
female). 
3. The tenth segment has a broad triangular excision 
on its border. Superior appendages black, very short, stout, 
obtuse, excised below the apex internally. Inferior ap- 
pendages black, long, subforcipate, turned inward, very acute ; 
more than twice the length of the superior. 
?. The appendages are very short, stout, conical, black. 
Valvules short, reddish varied with black, and with some- 
what long black appendages. 
Length of abdomen, ¢ 283 millim., 9 25 millim.; length 
of posterior wing, ¢ 20 millim., 9 19 millim.; expanse, ¢ 
41 millim., 2 38 millim. 
“Lanai and Oahu, at various elevations”? (Blackburn, 
two males, one female, No. 53). 
Notwithstanding the entire absence of postocular spots or 
lines, I think this insect is allied to A. xanthomelas, on account 
of general (and especially anal) structure. Eliminating it 
from Argta (with which it has affinity on acecunt of the long 
tibial spines), the absence of postocular spots would place it in 
Lrythromma; but the small head, slender body, and anal 
characters are opposed to its location therein. 
Agrion (2?) deceptor, n. sp. 
Wings hyaline (or with the faintest smoky tinge in the 
adult), rather acute. Pterostigma longer than broad, sur- 
mounting two cellules, reddish brown. Neuration black. 
Quadrilateral having its superior edge one third the length of 
the lower in the anterior wings, nearly one half in the pos- 
terior. ‘Twenty or twenty-one postcubital cellules in the an- 
terior wings, fifteen to eighteen in the posterior. Five cellules 
between the quadrilateral and the nodus. 
Head and thorax black. Abdomen bright red. 
Labium dingy yellowish. A broad border to the labrum, 
broad anterior orbits, a broad band above the rhinarium, and 
a small line on the basal joint of antennz beneath, yellowish 
or reddish. Postocular spots narrow, reddish, connected by a 
line. Posterior margin of prothorax having the sides broad] 
dilated, but the dilated portion is interrupted before the 
middle, leaving the apex of the discal portion projecting some- 
what obtusely between the two portions. Neck, a large 
median triangular spect, and the broad dilated portion of the 
posterior margin red. 
Thorax with a broad red antehumeral band, interrupted 
posteriorly in a point of exclamation, red, followed by a 
broader black humeral band. Sides red with two yellowish 
