P. ESBEN-PETERSEN, AFRICAN MYRMELEONIDAE. I. 17 



V. Dendroleini. 



Cymothales Gerstaecker. — Mitt. naturw. Verein f. 

 Neu-Vorpomm. und Riigen, p. 127, 1893. 



Mironus Nav as, Memorias Real Acad., Barcelona, p. 497, 

 1913. 



Tliis genus is only known from Africa (Madagascar incl.). 

 Instead of giving a real description of the genus Gerstaecker 

 compared his new genus with Gleiiurus Hagen, Ejoisalus 

 Gerst. and Periclystus Gerst., and the generic cbaracters 

 are therefore to be found in his description of the species 

 mirahilis from Cameroon. V^^hen Gerstaecker only pointed 

 out the main-characters it was because the genus was so 

 easily recognizable, what Gerstaecker also remarks. I have 

 looked upon several specimens of mirahilis, and it seems to 

 me that there are two forms. In the one the basal tarsal 

 joint is not longer than the apical joint, the tip of the hind- 

 wing is more elongate and much more pointed, and the an- 

 tennae longer; in the other form the basal tarsal joint is 

 longer than the apical one, and the tip of hindwing not so 

 pointed. There are also small differences in the shape and 

 size of the elevations on the vertex. I suppose these are 

 sexual differences only, but unfortunately my material is in 

 such condition, that the determination of the sex is impos- 

 sible. I think that Navas when he described the genus 

 Mironus did not know the genus Cymothales, because in that 

 case no reason was present for introducing a new genus. 



Cymothales spectabilis nov. spec. — Head, thorax and 

 abdomen (the apex löst) yellowish red.^ Fröns betvveen the 

 antennae somewhat darker. Antennae, hardly as long as 

 head and thorax united, yellowish red, the two basal joints 

 and the base of the third brown; the club scarcely indicated. 

 Prothorax about one and a half times as long as broad, a 

 little narrowed in front; a narrow blackish longitudinal me- 

 dian line, which does not reach either the front or the hind 

 margin; a short narrow yellowish white streak at the base 



^ The interiör of the specimen is destroyed by insects, and therefore 

 the colours are possibly somewhat paler than when the insect was alive. 



ÅrTci>) för zoologi. Band 10. N:o 15. 2 



