258 



INDIAN DRAGONFLIES. 



BY 



Major F. C. Fraser, I.M.S 

 (With 10 Text-figvres) 

 (Continued from page 66 of this Volume.) 

 Part VIII. 

 Genus — Tholymis, Fabr. 

 Tholymis, Hageii, Stettin, ent. Ztg., 28, p. 221 (1867)— Brauer, Zool. 

 bot. Wien, 18, pp. 36o, 712 (1868)— Kirby, Trans. Zool. Sog. 

 Lend. 12, pp. 258, 265-1889)— Calvert, Biol. C. A. Neur , pp. 199. 

 219 (1905-1906). ^ 



Fig. 58. — Wings of male Tholymis tillarya (x 2^). 

 '" Head relatively large, eyes contiguous for a long distance, rather' more 

 than the antero-posterior diameter of the occiput, forehead rounded and 

 without prominent foreborder, suture flush, vesicle high and deeply fissured. 



Prothorax with a very small posterior lobe, almost hidden by the apposi- 

 tion of the head with thorax. 



Thorax robust, somewhat cubical and shortened. Legs slim and long, 

 hind femora with a row of fine, gradually lengthening, sparce spines, mid 

 femora with a similar row but fewer in number, tibial spines numerous, 

 very fine, claw-hooks robust, situated near the middle of claws. 



Abdomen dorso-ventrally swollen and less so from side to side,' then 

 tapering gradually to the end. 4th segment with a transverse ridge. 



"Wings moderately long and broad, rounded at the apices, reticulation 

 very close, trigone of forewing slightly distal to the line of the trigone in 

 the hind, traversed once, long and narrow, trigone of the hindwing at the 

 arc, entire, its distal side slightly concave, arc between the first and 

 second antenodal nervures, antenodal nervvires 10^, the final incomplete, 

 sectors of the arc with a moderately long fusion in the forewing, a longer 

 fusion in the hind, 1 cubital nervure to all wings, no supplementary 

 nervures to the bridge, all hypertrigones entire, 4th nervure markedly 

 undulated, 2 rows of cells between 5 and 5a, 7a well formed, Sth nervure 

 very flat and the discoidal field therefore much contracted, 3 rows of cells 

 in the discoidal field, loop very long and very narrow, open at its apex, 

 the inner border running straight to the termen, anal field very broad, the 

 narrow cells composing it arranged in transverse rows. Membrane large. 

 Stigma large, the anterior usually the same size as the posterior, but 

 occasionally very slightly larger. 



