INDIAN DRAGONFLIES, 111 
Genus Anacieschna i— 
Base of hindwing sub-rounded ; 4th nervure 
15< making an abrupt curve towards the ae 
beneath the stigma as in Anax : Anacieschna jaspidea. 
Base of hindwing in the pinto? more or less angulated and 
excavated Be ae ahs Ae Ae fs Ate as ae 26 
ticulate or elongate .. >. oe + te a3 fi 5 7 
Genus Gynacantha :— 
Dentigerous plate in the female prolonged as a _ two- -pronged 
Porky «2; se ae as oc a fe fe es 22 
Genus Aischna i— 
Dentigerous plate in the female rounded and denticulate or subden- 
16 
Dentigerous plate in the female elongate and spout-like, the hinder 
border furnished with a number of long teeth .. : ee 1s 
Dentigerous plate in the female rounded and subdenticulate eC 
17 
broadening widely at the apex and expanded 
abruptly into a hawk’s-bill-like process inferi- 
orly ; a robust spine on the dorsum of the 
10th abdominal segment a Aischna ornithocephala, 
Superior anal appendages broad and spa- 
tulate ; only a poorly-developed spine on 
the dorsum of the 10th abdominal seg- 
Superior anal appendages narrow but 
ment oe ap hs ait a Sf Aischna erythromelas. 
, Antehumeral bands on thorax green = ig so Be ig 20) 
mat 
Ws oie bands on thorax bright yellow At ie a deal 2. | 
Sides of thorax entirely green; a small 
spine on the dorsum of the 10th abdominal 
segment ; appendages narrow and tapering .. Aischna virrdis. 
20 Sides of thorax with 2 broad, yellow stripes ; 
no spine on the dorsum of 10th abdominal 
segment ; superior anal appendages very 
broad and leaf-like $c tke Ae es Aischna petalura. 
about 74 mm.; a sharp, robust and promi- 
nent spine on the dorsum of the 10th abdo- 
et minal segment .. Aischna juncea. 
Smaller insects with a . total length of about 
E mm.; only a poorly developed, depressed 
| Very large insects with a total length of 
spine on the dorsum of 10th abdominal seg- 
ment : i se oe od -f Aischna mixta. 
Inferior anal appendages more than half 
the length of the superiors® .. Gynacantha khasiaca. 
Inferior anal appendages less than one- third the length of the su- 
periors, usually one-fourth or one-fifth  .. ; 23 
Inferior anal appendages more than one-third but less than o one- half 
the length of the superiors .. ore ae te se eee 
