18 ARKIV FÖR ZOOLOGI. BAND 11. N:0 26. 



the area between M.^ and the hind margin, two rows in the 

 apical part. Cu2 and 1 A nnforked. No Banksian lines pre- 

 sent. A few crossveins present in the apical area. Basal 

 tarsal joint one and a half times longer than second joint; 

 fifth joint as long as second, third and fourth united. Spurs 

 a little longer than first tarsal joint. Abdomen a little shorter 

 than the hindwing. 



Geno-type is the below described species. 



This genus is easily recognized by the unforked Cu2 

 in the hindwing. 



Myrmeleonellus pallidus n. sp. (pl. 2, fig. 3). — Face 

 reddish yellow. Inner margin of mandibles blackish. Palpi 

 yellowish. Vertex much raised, reddish yellow and with a 

 few transversely placed reddish brown indistinct spöts. An- 

 tennae påle brown. Prothorax as long as broad, yellowish 

 and with rounded front angles. Two rather broad brownish 

 longitudinal streaks, separated by a narrow yellowish median 

 streak; these two brown streaks continue on the meso- and 

 metathorax, but more widely apart. Two short and narrow 

 streaks are yet found on the dorsum of metathorax. Sides 

 of meso- and metathorax below the wing-roots more or less 

 blackish. Abdomen dark brown; pleurae paler. Legs påle 

 brown with blackish bristles. Membrane of wings hyaline. 

 Costa and the apical half part of the hind margin blackish; 

 the other nervures and all the crossveins påle brown. 



Length of body 20 mm; that of forewing 21; that of 

 hindwing 19 mm. 



Two specimens from Kimberley district, N. W. Australia, 

 February. 



Leptoleon n. g. 



Body rather short. Antennae distinctly clavate. Pro- 

 thorax short and broad. Legs short and robust. First tarsal 

 joint one and a half times as long as second; fifth joint as 

 long as the four others united. Spurs a little longer than 

 basal tarsal joint. Wings rather long and slender, gradually 

 widened towards pterostigma; the tips of the wings rather 

 obtuse. Se and R in all the wings and in the forewing Cu^ 

 also very conspicuous, blackish and with påle annulations. 



