494 Dr. H. A. Hagen’s Notes on 
499). Legs yellowish-brown; femora above (the posterior alto- 
gether), and the tarsi, brown. Wings broad, oval; neuration 
clear yellow; 9 antecubital nervules, 4 discoidal areoles ; ptero- 
stigma long, narrow, four times as long as broad, with one trans- 
verse veinlet in the middle; inner side nearly straight, outer 
somewhat oblique; the areole below the pterostigma exactly its 
length, pentagonal, commencing at the same point, or slightly 
later. 
Length, wings included, 15 millimétres; of the upper wings, 
103 mill. 
The female above described has perhaps not altogether attained 
its full coloration ; but it is a good species, of almost the size of 
R. affinis, with which it cannot be confounded. It differs from 
R. xanthostigma by its size, and by the head being more convex 
and more inflated posteriorly, but the pterostigma is similar. A. 
cognata is smaller, has the head broader and shorter posteriorly, 
and has only three discoidal areoles. It is to be remarked that in 
Schneider’s figure of xanthostigma the form of the head is incor- 
rect, and applies better to Schneiderii. 
2. Raphidia ophiopsis. 
The insects described under this name by De Geer, Schummel, 
Schneider, Rambur and Ratzeburg (according to his type) are 
identical. 
The colour, the form and largeness of the pterostigma, and the 
areole below it, are very remarkable and easily recognizable. In 
Rambur’s type the pterostigma is clearer, not mature. The form 
of the areole below the pterostigma is variable according to Schnei- 
der. Zetterstedt’s type of this name in my collection is R. media. 
Male.—Penultimate abdominal segment as long again as broad; 
above with a narrow triangular excision in the apical half; be- 
neath with the basal half inflated, split longitudinally to admit of 
the insertion of the penis, which is long, brown, slightly flattened, 
and divided beneath: the apical half of this segment is excised, 
so that nothing remains of it but the lateral borders, prolonged 
at the apex for the insertion of a long moveable crotchet, which 
is acute, black, curved upwardly, and covered by the last seg- 
ment; this segment is entirely open above, rather short, very 
broad, triangular when viewed from the side, and elongated late- 
rally into an obtuse point, with a sort of V-shaped crest. 
Female.—With the last ventral segment excised at the middle, 
widened at the sides, with a tuft of hairs (fig. 1, post, p. 499). 
