new Species of Odonata. 23 
tiguous, subobtuse. Inferior appendages scarcely one fourth 
the length of the superior; viewed from beneath they are 
broad and triangular, with straight and contiguous inner 
edges, the basal half black, the apical yellowish. 
@ unknown. 
Length of abdomen (cum append.) 57 millim.; expanse of 
wings 73-79 millim.; length of posterior wing 36-39 millim. 
Hab. Darjiling. 
I have long had an old and mutilated male; more recently 
I received a fresh and perfect male. 
‘he presence of median dark bands on the wings of 
Agrionina is very rare, and is probably seen in a less inten- 
sified degree only in some species of Chlorolestes and Disparo- 
neura. It should be remarked that the dark portion of the 
wings shows a few irregular spots where the pigment has not 
developed, such as occursso frequently in Calopteryx maculata, 
Beauv., &e. : 
I dedicate this fine insect to a venerable and venerated 
naturalist and friend, who has devoted more than sixty years 
of a long life to the study of the Odonata. 
Lestes albicauda (Selys, MS.), sp. n. 
Wings hyaline. Pterostigma brown, narrowly paler on 
the costal edge (giving the appearance of an indistinct paler 
longitudinal line at that part), about twice as long as broad, 
surmounting nearly two cellules; 11-14 postnodal nervules 
in the anterior wings; external angle of the quadrilateral 
considerably acute. 
Head bronzy green above; ocelli testaceous; labrum 
whitish and fringed with hairs of the same colour ; labium 
and back of head whitish yellow. Prothorax dusky yellowish 
or smoky. Thorax dusky whitish yellow, above with a 
bronzy-green band on each side of the dorsal crest, very 
irregular externally, there being a median projection followed 
by a broad excision towards the base, this band followed 
beneath by a smoky band; there is usually a black spot on 
the humeral suture above the base of the anterior wings; a 
short black line under the base of these wings, another at 
the base of the median suture; pectus with a black median 
longitudinal line and at least two black spots anteriorly and 
posteriorly. Legs whitish yellow ; a black line on the femora 
and tibie (posterior femora excepted) above; tarsi blackish 
except at the base ; spines black, very long. Abdomen very 
slender, bronzy blackish above, varied with whitish yellow as 
follows :—First segment whitish yellow, with two large con- 
