344 ENTOMOLOGICAL NEWS. [Oct., 



of the sort described. The reference is made to the legion 

 Podagrion of de Selys, because of the existence of two inter- 

 polated sectors (one long and one short) between veins M 3 

 and Rs, with a number of short oblique ones behind the tip 

 of vein M 3 . 



Pseudagrion sp. ? (supposition), (Plate XI, figs. 5-8). 



Nymphs are in the M. C. Z. collection bearing numbers 327 

 and 355, collected by Rev. M. A. Carleton, in the Himalayas, 

 in 1871. 



A well grown nymph measures 19 mm., gills 6 mm. additional ; 

 abdomen, 14 mm. Width of head, 3.2 mm. 



A rather slender nymph, readily recognized by the extreme angula- 

 tion of the hind angles of the head, and by the conspicuous joint in 

 the middle of the gills. The head save for the hind angles, is of the 

 ordinary Agrionine form, with ocelli close together upon the middle 

 of the dorsal side. The antennae are apparently but six jointed, the 

 relative lengths of the joints being as i: .9: i.i : 1.2: .9: .7. Legs 

 slender. The wing cases reach the middle of the fourth abdominal 

 segment. Vein M2 arises opposite the fifth cross vein after the nodus 

 in the fore wing, opposite the fourth cross vein in the hind wing. 

 There are no interpolated sectors save Mia which arises in the hind 

 wing opposite the base of the brace vein to the stigma. The hind 

 side of the stigma is shorter than the cell behind it. The front side 

 of the quadrangle is in the fore wing about equal in length to the 

 inner end, but much longer in the hind wing. The gills are diver- 

 gent basally, distinctly divided into two segments by an oblique suture 

 at the middle of their length, and thereafter parallel to their rather 

 obtuse tips. In a wide transparent marginal area there are small pig- 

 mentation figures of more or less dendritic form, and the denser 

 more opaque median band is traversed by long and nearly parallel 

 tracheal branches, which gradually diverge to the margins. 



Aciagrion sp. ? (supposition), (Plate XI, figs. 9, 10). 



Nymphs of this species in the Museum of Comparative Zoo- 

 logy bear the numbers 395 ("Swamp, E. Jumma, India. Old 

 Holy Tank"), and 324 ("Ibania, East India. Old Holy 

 Tank"). They are interesting as showing a minimum devel- 

 opment of the median cleft of the labium. 



A well grown specimen measures : in length, 12.5 mm., gills 3.5 

 mm. additional ; abdomen, 7.5 mm. ; hind femur, 3 mm. Width of 

 head, 3 mm., of abdomen 2 mm. 



A not very slender nymph with short gills. Head rather deeply 



