8o Records of the liiiian Museum. [Vol. XXII^ 



I cf I 9 . Cherrapunji, Assam, 4,000 ft., 2 — 8-X-14, vS W. 

 Kemp. 8186—87/20. 



I have been unable to find an\' character of sufficient import- 

 ance by which to separate this species generically from Australian 

 Austroaeschnas. The pterostigma has a brace (save in the r. 

 hinder-wing of the female) not shown in Martin's figure. The anal 

 appendages of the male bear a considerable resemblance to those 

 oi Aiistroaeschna parvistigma, Svlys, and the dentigerous plate of the 

 female is a simple spout-like structure, its apical margin armed with 

 a few small spines. The strong antenodals of the fore-witig are 

 the first and seveath in the male, the first and sixth in the female. 



The distal strong antenodal lies, as in Australian species, 

 some two or three cells distal to the arculus. 



Cephalaeschna ? sp. 



I 9 . Cherrapunji, Assam. 4066/H2. 



Wings relatively short and broad, with open venation. Ptero- 

 stigma very short, well braced. Nodal indicator -^^^ — ^~'" . On 

 * 13—15 I 16—13 



the fore- wing the second and seventh, on the hinder-wing the first 

 and fifth antenodals are strengthened. All four triangles contain 

 four cells, Rs forks rather nearer to pterostigma than to nodus. 

 The median, basal and supratriangular spaces are all traversed 

 by cross-nerves. 



Head. — Upper-lip, clypeus and frons brownish-yellow ; occiput 

 small, black with a fringe of black hairs. Eyes large, yellowish 

 green. The frons is verj' wide, seen from in front it is semi-circular 

 with a prominent ridge separating the horizontal from the vertical 

 part. 



Thorax. — Dorsal surface black, with a pair of pale green 

 antehumeral bands, squarely truncate above, pointed below. 



The sides of the thorax are pale green, with a single broad 



black band on either side. 



Abdomen hrovmish black; segment 

 2 moderately inflated, 3 — 7 about equal 

 in size, 8 — 10 progressively smaller. 

 Segment i with small mid-dorsal green 

 spot ; 2 with longitudinal mid -dorsal 

 band of green, interrupted at its mid- 

 dle and widening at the apex of the 

 segment. At the level at which the 

 Text-fig. i.—Cephalaesch- longitudinal band is interrupted there 

 "^Apex of dentigerous plate of are a pair of transverse marks of the 

 female from below 1 specimen same colour. Segments 3 — 6 with 

 somewhat crushed). sxa-iW median and apical spots of green 



divided into pairs by the mid-dorsal 

 carina ; 7 with minute median spots onl3^ (The median spots on 

 these segments lie on the structure I call the jugum, vide infra, 

 under A nax gtdtatus). Segments i — 2 with lateral band of yel- 



