XIV] CLASSIFICATION 275 



about half-way between base and nodus, or nearer to base (much nearer in 

 Philoganga). Larva not known for certain 1 . 



Tribe 3. Amphipterygini (fig. 139). 



Wings petiolate. Pew antenodals of the first series, only 2-3 in second 

 series. Arculus nearer to base than to nodus. Larva without lateral gills; 

 caudal gills of saccoid form, tapering to a point (fig. 35). 



Fig. 139. Basal half of forewing (total length 32 mm.) of Diphlebia 

 nymphoide-s Tillyard, <$, New South Wales. Original. 



Subfamily 2. Thorinae (fig. 21). 



Sectors of arculus arising from top of arculus ; hence quadrilateral irregular, 

 with basal side longer than distal side. Pterostigma long, regularly formed. 



Larva (Cora) similar to that of the Epallaginae, with lateral abdominal 

 gills ; caudal gills not tapering to a point, but irregularly truncated. Mandibles 

 biramous. 



Subfamily 3. Calopteryginae (figs. 140, 151, 177, also PI. I, 



figs. 6, 7). 



Sectors of arculus arising from lower third of arculus. -3/i_ 2 arching 

 strongly upwards from M 3 , so as to approach R very closely, and, in some 

 cases, even fusing with R. Pterostigma much reduced, false, or completely 

 absent. 



Fig. 140. Forewing (36 mm.) of Vestalis amoena Hagen, <J, Borneo. Original. 



Larva of slender build, with moderate or long legs (fig. 40). Antenna 

 with hypertrophied pedicel, longer than the other six segments taken together. 



1 See, however, Karsch., Berliner Ent. Zeit., 1893, xxxvm, fig. 11. This larva 

 from Togoland resembles that of Diphlebia, and is very probably a Libellago. 



182 



