INDIAN DRAGONFLIES, 113 
curve towards the costa near outer end of stigma; 5th nervure (Rs or sub- 
nodal sector) not forked ; stigma long and slender ; arcular space entire ; mem- 
brane long and broad; trigones very elongated, of 4 to 8 cells; border of 10th 
abdominal segment in the female subrounded and subdenticulate ; anal appen- 
dages entire, variable but more or less lanceolate in shape; abdomen with 
or without lateral, accessory, longitudinal ridges on segments 4 to 8. 
Only two genera—Anax and Hemianazx. 
Genus—ANnax, LEACH, 
Fig. 3.—Dorsal and lateral aspects of the anal appendages of 1. Anax gutta- 
tus, 2. Anax parthenope julius, 3. Hemianax ephippiger, 4. Anax parthenope 
parthenope, 5. Anax immaculifrons. 
Anax, Leach, Edinb. Encycl. ix, p. 137 (1815). 
Aischna, Van der Lind. 
Cyrtosoma, Burm. Handb. Ent. ii, p. 839 (1839); Charp. Lib, Eur. p. 13 
(1840). 
Anax, Ramb. Ins. Nevr. p. 182 (1842); Brauer, Reise d Novara. Neur- 
p. 59 (1856); Steph. IIT. Brit. Ent. Mand. vi, p. 81 (1836); Selys, 
Mon. Lib. Eur. p. 113 (1840); id., Rev. Odon. p. 109 (1850); id.. 
Bull. Acad. Belg. (3) v., p. 723 (1883). 
Lateral supplementary ridges on abdominal segments 4 to 8; anal superior 
appendages thick, sublanceolate, hollowed inwardly, with a keel or ridge above, 
the inferior quadrilateral. 
16 
