456 Mr. W. F. Kirby on the 
Agrionida. 
A GRIONINZE. 
10. Ischnura aurora. 
Ayrion (Ischnura) aurora, Brauer, Verh. zool.-bot. Ges. Wien, xv. 
p- 510 (1865). 
Waihiri, Tahiti, Sept. 1875. 
CALOPTERYGINA. 
11. Vestalis melania. 
Vestalis melania, De Selys, Bull. Acad. Belg. (2) xxxv. p. 474 (1873), 
(2) xlvii. p. 360 (1879). 
Philippines. 
The brilliant blue of the male (sometimes shading into 
greenish, especially towards the base) and the rich purplish 
violet of the more highly coloured females render this species, 
which was not previously in the British-Museum collection, 
one of the most beautiful of the Odonata. 
PLANIPENNIA. 
Myrmeleontide. 
12. Myrmeleon variegatus. 
Myrmeleon variegatus, Klug, Symb. Phys. pl. xxxv. tig. 4 (1834). 
Common in July and August at St. Vincent and St. Jago, 
Cape Verdes, along with its larva from the former locality. 
It was previously known from 8. France and Arabia. 
LI.—On the Diptera collected during the recent Expedition of 
H.M.S. ‘Challenger. By W. F. Kirpy, Assistant in the 
Zoological Department, British Museum. 
THE collection of Diptera formed was not very extensive, but 
contained several interesting species, three of which are here 
described as new. The capture of a species of Tachininaw, 
originally described from the Red Sea, in the Cape-Verde 
Islands is very remarkable. 
