18 ARKIV FÖR ZOOLOGI. BAND 10. N:0 15. 



at each side. Meso- and metathorax at each side with a 

 yellowish white streak. Legs påle reddish yellow; front femora 

 somewhat darker. Tip of tibiae and tarsal joints påle reddish 

 brown. Tibiae with an abrupt blackish brown band near 

 their base. Bristles påle, spurs and claws reddish brown. 

 Spurs as long as first and second joint united. First tarsal 

 joint almost as long as fifth, which is as long as second, 

 third and fourth united. Membrane of wings hyaline irri- 

 descent. Nervures påle yellowish. Markings reddish yellow 

 or påle yellowish brown with reddish tinge. The cross veins 

 in the spöt at the origin of Rs yellowish margined. 



Length of forewing 30 mm; that of hindwing 32 mm. 



One specimen from British East Africa (Lindblom leg.) 

 in Mus. Stockholm. 



Fig. 8. 

 Cymothales spectabiles. Mus. Stockholm. 



VI. Formicaleonini. 



Gaiululus Na v AS. — Broteria, p. 73, 1912. 



This genus was founded by Nav as for a new species G. 

 leptogaster (Broteria, p. 73, 1912) from Brit. South. Africa, 

 a species which is the same as Myrmdeon filiformis Gerst. 

 The genus is a good one, and below I give some supplementary 

 notes to the description of Na vas. 



Antennae with distinct club and at least as long as the 

 thorax. Abdomen in the male long and slender, longer than 

 the wings. The appendages formed as in Macronemurus but 

 shorter. Legs rather slender; spurs straight and long, at 

 least as long as first tarsal joint, which is much longer than 

 any of the following three and almost as long as the fifth. 



