300 NEUROPTERA. 
Amer. Ent. Soc. pp. 223, 227 (1893) °; Proc. Calif. Acad. Sci. (2) iv. p. 471 (1895) ’ ; 
Williamson, 24th Rep. Geol. Indiana, pp. 249, 315 (1900)°; Needham, Bull. 47 N.Y. St 
Mus. pp. 508, 509, 537 (1901) *; Krier, Stett. ent. Zeit. 1902, p. 81”. 
A circumtropical genus, the Mexican and Central-American representatives of 
which differ as follows :— 
I. Hind wings with dark basal colouring extending outward to the sub- 
median cross-vein, the origin of the distal subbasal sector (Ag), or, less 
often, to the proximal side of the triangle, nowhere extending beyond 
the level of the triangle, its outer margin nearly straight or slightly 
curved ; only one row of cells between A, and A3. 
a. Sides of the thorax with two broad (1 mm.) oblique yellow bands, the 
first running from the upper part of the metepisternum to the lower 
part of the mesepimeron, the second occupying most of the met- 
epimeron ; frons with a transverse, superior, basal, metallic-violet 
band, wider in the ¢ (1 mm.) than in the 9 (‘5 mm.) ; superior 
appendages of the ¢ 3-3°5 mm. long, shorter than segm. 8+9, 
inferior appendage one-half to three-fifths as long as the superiors, 
genital hamule projecting ventrad but slightly beyond the genital lobe, 
i.e. by less than half the height of the latter ; vulvar lamina ? reaching 
to 3-3 of the length of the lateral margin of segm. 9. Abdomen, 
& 29-31, 9 29-32; hind wing, ¢ 39°5-44, 9 41-46 mm. . . . 1. cophysa? 
aa. Sides of the thorax without yellow bands. 
6. Frons superiorly metallic-violet; superior appendages of ¢ 3- 
3°5 mm. long, shorter than segm. 8+9, inferior appendage half as 
long as the superiors, genital hamule recumbent, projecting ventrad 
beyond the genital lobe by less than half the vertical height of the 
latter. 2 unknown. ¢, abdomen 29°5-32, hind wing 41-44 mm. 2. longicauda, var. ? 
bb. Frons superiorly (¢), or with a transverse superior basal stripe 
(2), metallic-blue, vertex metallic-blue (4) or luteous (?) ; 
superior appendages of male 4-4°5 mm. long, as long as or longer 
than segm. 8+9, inferior appendage about € as long as the 
superiors, genital hamule more recumbent upon the genital lobe, 
projecting ventrad beyond the latter by less than half the vertical 
height of the lobe; vulvar lamina ¢ reaching to ? or whole length 
of lateral margin of segm. 9. Abdomen, ¢ 30°5-33, ? 29-81; 
hind wing, ¢ 3775-45, 9? 88-42 mm. ..... . . . 8. insularis. 
666. Frons superiorly and vertex shining red or luteous, with no 
metallic-blue ; superior appendages ¢ 3°75 mm. long, almost as 
long as segm. 8+ 9, inferior appendage half as long as the superiors, 
genital hamule erect, projecting ventrad at least as far beyond 
the genital lobe as half the vertical height of the latter; vulvar 
lamina ¢ reaching to posterior end of lateral margin of segm. 9. 
Abdomen, 3 30-33, 9 29-30; hind wing, ¢ 40-44, ¢ 39-40°5 mm. 4. abdominalis. 
