‘Challenger’ Neuroptera. 455 
Agrees very fairly with the description, except that Brauer 
gives 17-19 antecubital and 12 postcubital nervures. This 
specimen has only 14 antecubitals on both fore wings, and 11 
posteubitals on the right fore wing and 12 on the left. 
8. Lepthemis sabina. 
Lrbellula sabina, Drury, I. Ex. Ent. i. pl. xlviii. fig. 4 (1773). 
Philippines. 
A rather small specimen. 
9. Diplax pacificus. 
Male.—Exp. al. 1 unc. 10 lin.; long. corp. 1 une. 1§ lin. 
Wings hyaline, rounded; fore wings rather narrow ; hind 
wings slightly stained with yellow at the base, and consider- 
ably expanded between the base and the nodus. Nervures 
black, pterostigma yellowish brown. Fore wings with 8 
antecubital nervures of the costal series and only 7 of the 
subcostal series, and 7 postcubital nervures of the costal 
series and 4 of the subcostal before the pterostigma; hind 
wings with 6 antecubital and 7 posteubital nervures; in the 
second series only the last 4 of the latter; triangles ordinary, 
that of the fore wings with the basal side rather shorter than 
the outer; the dividing line slightly oblique. Body testa- 
ceous yellow. Head: middle ocellus red, placed in a deep 
depression ; epicranium emarginate above, vertex convex ; 
clypeus (which is semicircular and with two indentations in 
front), labrum, and sides of epicranium paler yellow than the 
rest of the head ; prothorax quadrifid, the frontal lobes trans- 
verse, each marked with a large black spot, the hinder ones 
contiguous, being less distinctly separated ; mesothorax rather 
long, with two large black spots in front, almost concealed by 
the junction with the prothorax ; a deep longitudinal depression, 
with a narrow keel in the middle; the lateral sutures slightly 
marked with black at two or three points. Abdomen with a 
longitudinal keel on the back, which is reddish brown beyond 
the second segment, and marked somewhat irregularly with a 
series of square spots, chiefly towards the ends of the seg- 
ments ; there is also a dark line on the ventral surface, and a 
series of 4 or 5 irregular long and partly connected reddish- 
brown spots on the sides of the middle segments. Legs 
yellowish, the four hinder ones black above; spines strong ; 
claws very large and slightly bifid. 
Anal appendages as long as the two preceding segments, 
pointed ; lower appendages broad and a little shorter. 
Tongatabu, July 1874. 
