Neuroptera of the Hawatian Islands. 237 
Prothorax having its posterior margin gently rounded and 
narrowly red (otherwise black). 
Thorax with the very narrow dorsal crest, and a narrow, 
slightly curved, continuous antehumeral line red, the latter 
followed by a broad black humeral band; sides red, with two 
yellowish lines (whereof the upper exists as a vestige at the 
base of the anterior wings) ; a black spot, and a narrow black 
mesothoracic sutural line. Pectus red. 
Legs red; spines black, those on the tibie long and divari- 
cate; apex of tarsal joints and tips of claws black. 
Abdomen very slender, bright red; a large quadrate spot 
on the first segment, a narrow ring at the apex of the second 
to sixth (broader and expanding on the sides in the fifth 
and sixth), and an anterior lateral line on the seventh, black. 
g. The margin of the tenth segment is shallowly ex- 
cised in a semicircular manner. Superior appendages longer 
than the segment, very stout, blackish, red at the base; the 
apex very obtuse and curved inward; internally they are 
greatly dilated at the base, with a sort of blackish basal 
tubercle. Inferior appendages shorter, red with black tips, 
cylindrical, curved inward, and with a basal internal ventral 
dilatation. 
¢. Unknown. 
Length of abdomen, ¢ 37 millim.; length of posterior 
wing 243 millim.; expanse 51 millim. 
* Lanai, about 2000 ft.” (Blackburn, one male, No. 55). 
In some respects this is the most aberrant of the red 
Hawaiian species, owing to its narrow wings and their greater 
amount of petiolation; the anal parts are, however, quite 
homologous. 
MEGALAGRION, n. g. (Légion Agrion.) 
Inferior sector of the triangle originating before the basal 
postcostal nervule. Arculus continuous with the second costal 
nervule. Pterostigma lozenge-shaped, its lower edge shorter 
than the upper, surmounting two cellules. Postcostal area 
with two rows of cellules. Postocular spots present, large. 
Labium excised for about a third of its length. 
Form robust, especially in the female. 
Spines of the tibize long and strong ; inner tooth of claws 
small. 
Colour red. 
No vulvar spine. 
I have established this division for the reception of two of 
the most magnificent species of the Légion Agrion hitherto 
