jyjJIAN DRAUOy FLIES. 



Gil 



Larva ; middlo lobe of labium tlat, the lateral lobo 

 shaped as a double hook ; the lateral, tlexible claw that 

 terminates the basal part, extending beyond the middle 

 line : no mental spines. 



Antenn;e 4-jointed ; the third joint prolonged and 

 llattened, the 4th small and clubbed. 



Claw-hooks present 



Eyes separated by a very small interval, 



A vesicle present behind the ocelli. 



The trigone in the fore-wing nearly right-angled, in the 

 hind-wing elongated in the transverse axis of the wings ; 

 in the hind a very broad anal Held with rows of straight 

 reticulation. 



Several nervures in the subcostal and cubital spaces. 



No subtrigones. 



Femalw with a split vulvar scale. 



Middle lobe of labiuiu with a small notch at the end. 

 Larva unknown , . 



Eyes just touching or else separated by a very small 

 interval. 



The two hinder ocelli situated at the lateral ends of a 

 transverse protuberance whose form resembles slightly 

 that of a vesicle. 



Trigones in all four wings uniform, their costal side 

 moderately longer than the proximal. 



No nervures in the subcostal space but a few in the 

 cubital space. 



An imperfect subtrigone of uniform shape in both pairs 

 of wings. 



Female with a large, projecting but not fissured 

 ovipositor. 



Middle lobe of labium notched a little at the end. 



Larva : the basal segment of the labium arched, the 

 lateral lobes robust and complicated, their toothed borders 

 overlapping or dovetailing across the mid-line. Chin and 

 labial bristles. Antennse 7-jointed, slim. . 



Eyes narrowly separated. 



Vesicle poorly marked. 



Head similar in shape to the Gomphinte, 



The trigone a little different in the two wings, in 

 fore-wing its length lying in the transverse axis of the 

 wing, in the hind in the long axis of the A^ing. 



Subcostal space entire. A few nervures in the cubital 

 space. 



In the hind-wing an imperfect subtrigone as in Cor- 

 dulegaster, in the fore-wing a highly differentiated sub- 

 trigone as in the majority of the Libellulines. 



Female with an ovipositor like that of the Aesch- 

 ninse. 



Middle lobe of labium notched at the end. 



Larva with a flat mask, the lateral lobe of which is 

 more like the Gomphines and Aeschnines than the Cor- 

 dulegasterinea and Libellulines. 



Antennie 7-jointed, short and moderately robust 



Gomphiruc. 



Chlorogomphince. 



CordulegaAterinrp. 



Petalunnce, 



