INDIAN DRAGONFLIES. 617 



Sexual organs prominent, reddish in colour : lamina broad but recumbent : 

 external tentaculae projecting, foliate : internal tentaculse stout, curved, black- 

 tipped hooks : lobe prominent and arched. 



Female : 



Head : eyes brown above, lilaceous at the sides and beneath : occiput oliva- 

 ceous : vesicle brown : frons, epistone and labrum pale yellow. 



Prothorax brown or ochreous. 



Thorax a golden brown without markings. Legs ochreous with black spines. 



Abdomen olivaceous brown, with a fine black dorsal carina. 



Wings as for male but the basal markings paler and the reticulation yellow 

 instead of red as in the male. 



Hab. Throughout Continental India, Burma and Ceylon. I have seen it 

 also in fair numbers in Basra, Bushire and Suez, but in these places it is largely 

 replaced hj the yelloAV form erytluea. 



49. Crocothemis servilia servilia., var. maxima. 



Expanse 65 mm. Length 45 mm. 



This species does not differ in colour from the foregoing but it is of a much 

 larger size and is apparently a local insect. I have only taken it in Poona 

 district. Usually it shows bilateral polymorpliism as regards the neuration 

 of the wings, thus quite occasionally the discoidal field of one side begins 

 with a row of 3 cells and is then continued as 2 rows of cells. 



In this respect it resembles R. rufa so closely that it is only with great diffi- 

 culty distinguished from that insect, usually however this character is present 

 only on one side. Very occasionally the antecubital nervures number 12J on 

 one side and lOJ on the other. Generally it is of a much more briUiant red 

 than servilia servilia. 



50. Crocothemis servilia servilia., var. enjlhcea. 



Crocothemis erythcea, Brauer. 

 Libellula ferruginata, Fabricius. 

 Libellula victoria, Fourcroy. 

 Libellula rubra, de Villers. 

 Libellula ferruginea. Van der Linden. 

 Libellula eri/thcea, BruUe. 



Expanse 55 mm. Length 35 mm. 

 ]\Iale and female very similar. 



Head : eyes puce coloured above, ochreous at the sides and beneath : occiput 

 olivaceous : vesicle brown : frons, epistome and labrum a pale straw colour but 

 m some males the frons is ochreous. 

 Prothorax olivaceous browin. 



Thorax a golden yellow, rather darker on the dorsum and with a usually 

 sharply defuaed, antehumeral, pale whitish green stripe. The sides much paler 

 especially in the female and with a distinct greenish tinge. Legs olivaceous. 

 A whitish green stripe on the tergum. 



Abdomen ochreous, this colour being most intense along the sides, paler on 

 the dorsum, the dorsal carina finely black. Anal appendages yellowish. 



Wings hyaUne, the apices more often than not tinted faintly and diffusely 

 with broAAli or sepia. An amber suffusion, pale and diffuse, runs along the costa 

 of both wings and blends AA-ith the basal marking which is more diffuse and much 

 paler than in servilia servilia. Stigma bright yellow. 



Hab. ^Mesopotamia, Egypt, Southern Europe, throughout Africa, Quetta, 

 Bombay, Poona and Ceylon. I have noticed specimens of this msect on board 

 ship during voyages from the Persian Gulf to Karachi and Bombay, so possibly 

 its spread has followed trade routes. I am of opinion that specimens from 

 India have in the past been regarded as teneral forms of servilia servilia. 



(To be continued.) 



