xrv] CLASSIFICATION 263 



Larva with elongated abdomen and slender 7-jointed antennae (fig. 29 

 A-D). Mask flat, without setae (exc. Gynacantha) ; lateral lobes narrow, 

 with apex of variable form ; long movable hook. Gizzard with four radially 

 symmetrical fields carrying a few large specialized teeth. Gills duplex, but 

 not lamellate. . 



Fig. 121. Wings of Cordulegaster annulatus Latr., <J, Britain. 

 (Hw. 46 mm.) Original. 



Tribe 1. Petaliini (fig. 122, also PL I, fig. 1). 



Triangles only moderately elongated, very close to arculus and to base 

 of wing. Us unforked. A series of dark brown or red blotches along costal 



Fig. 122. Wings of Austropetalia patricia Tillyard, 

 New South Wales. (Hw. 38 mm.) Original. 



