Neuroptera of the Hawaiian Islands. 229 
Odonata. 
LIBELLULINA. 
Pantala flavescens, F. 
A nearly cosmopolitan species; found universally within 
the tropics (Mathew, Blackburn, &c.). 
Tramea lacerata, Hagen. 
A North-American species, extending to Mexico (Mathew, 
Blackburn). 
Lepthemis Blackburnt, n. sp. 
Wings quite hyaline, very shining, both pairs yellow 
(slightly olivaceous) at the base nearly or quite up to the 
triangles; this colour more intense and more extended out- 
wardly in the subcostal and median areas, not extending to 
the anal angle in the posterior wings. Neuration entirely 
black, the costal nervure black outwardly. Pterostigma long 
(4 millim.), greyish yellow (brown when very adult), be- 
tween thickened deep black nervules. Eleven or twelve ante- 
eubital and nine postcubital nervules in the anterior wings ; 
a supernumerary nervule in the anterior wings (not in the 
posterior). Sectors of the arculus with a short petiole. Dis- 
coidal triangle in the anterior wings rather broad, traversed by 
one or, exceptionally, by two nervules ; inner triangle with 
three cellules (in the posterior wings the discoidal triangle 
may be either free or traversed by a nervule; inner triangle 
absent or abnormally present); three rows of posttrigonal 
cellules. Membranule whitish cinereous. Posterior wings 
moderately dilated at the base. The network of all the wings 
fine and close.’ 
Head: face pale yellow, clothed with erect black hairs ; an 
isolated transversely oval shining black spot on the top of the 
front, and a broad band of the same colour in front of the 
ocelli ; labium and a broad inner margin on each of the side 
lobes black ; labrum black at its base and with a narrow 
black margin in the female (or with only the narrow black 
margin, male) ; occiput blackish, yellow behind; back of 
head shining black, with three yellow spots on either side, 
fringed with a strong crest of cinereous hairs. 
Prothorax black (with an indistinct median yellow spot), 
its posterior lobe very large, slightly emarginate in the 
middle (hence indistinctly bilobed), with a median im- 
Ann. & Mag. N. Hist. Ser. 5. Vol. xii. LG 
