328 BULLETIN: MUSEUM OF COMPARATIVE ZOOLOGY. 



MYRMELEONIDAE . 



CYMOTHALES HERMOSA, sp. nov. 



TYPE. M. C. Z. 10,565. N. Angola: Dalla Tando, 29 November 

 (Le Moult); two specimens. 



Wings marked in general as in C. spedosa and eccentros; only very small 

 stigmal spot as in eccentros; apical band broken up more by spots than in 

 eccentros. The upper part of the middle band is broader in front than behind 

 (in eccentros broader behind). Head pale, black between and above antennae, 

 antennae pale, dark on extreme base, vertex with a hump each side which has 

 a slightly bilobed summit. Pronotum black, a pale line each side, and behind 

 are two oblique lines on each side; thorax blackish, with a pale line each side; 

 pleura dark. Abdomen pale with two black stripes above; legs pale, femur 

 of front legs black except at base and tip, with dense black hair, and longer 

 erect black bristles, hind femora also with black bristles. Front tarsus has 

 basal joint longer than the fifth, the spurs a trifle longer than first and second 

 joints together. In fore wing four to six cross-veins before any are crossed, 

 but the radial sector arises farther out at the middle band; nine or more 

 branches to radial sector; in hind wing one cross- vein before radial sector. 



Length fore wing 30 to 34 mm., hind wing, 35 to 38 mm. 



This belongs to the section or subgenus Mironius. 



CHAETOLEON, gen. nov. 



Differs from Brachynemurus, Austroleon, and allied genera in having erect 

 enlarged bristles upon the mesonotum in front, also in that on the fore wing the 

 second and third anal veins are united for a short distance, the second anal, 

 however, does not approximate the first anal vein in its basal part (as in the 

 Formicaleonini). The antennae are long and slender, with much enlarged tip. 

 Legs slender, with very long bristles, the tarsus shorter than the tibia, the first 

 tarsal joint a little longer than the second, spurs equal, two tarsal joints. 

 Wings moderately slender, in fore wings three cross-veins before radial sector, 

 in hind wings two such cross- veins; radial sector in fore wings arises much 

 before the fork of the cubitus. 



TYPE. - Myrmeleon pumilis Burmeister. 

 Brachynemurus pusillus Currie also belongs here. 



PUREN. 



I include in this genus Myrmeleon inscriptus Hagen. It differs from 

 Psammoleon in having the basal joint of the tarsus much longer than 



