6 Annals Entomological Society of America [Vol. IV, 



Acanthaclisis baetica Rambur. 



Not before recorded from Africa; in the Petersen coll. a 

 specimen from Oran, Algeria agrees with Spanish specimens. 



Myrmecaelurus Costa. 



This genus is related most closely to Nesoleon, but separated 

 from that as well as from Myrmeleon by the longer spurs; there 

 is a line through the apical part of the wing. 



There are several species recorded from Africa, but I have 

 seen but one which is new. The Myrmeleon tristis has been 

 referred to this genus, but is nearer to Myrmeleon, and is better 

 placed in a new genus. 



Type — M. flavus ( = trigrammiis). 



Myrmecaelurus subcostatus n. sp. 



Pale yellow; no mark between antenna?, and only very faintly on 

 each side on the anterior part of vertex; antennae pale brownish; pro- 

 notum with a black line each side not reaching either margin, and a 

 median black dot on front margin; three black lines on rest of thorax, 

 the median one nearly complete (single on the scutelli), the lateral ones 

 interrupted, some dark lines over base of coxa? I and II; abdomen with 

 a dark median stripe from base to tip, and a dark stripe each- side on 

 the venter. Wings hyaline, venation yellowish, the subcosta very 

 strongly marked with black nearly to the stigma; the black extending 

 up on each costal crossvein; the radial sector much marked with black, 

 and at tip with a black streak extending out over the end of radius 

 toward the tip of wing; some dark dots on origin of branches of cubitus, 

 and a few others near middle of wing. In the hind-wings the subcosta 

 and radius are marked near base, and to a lesser degree on the radial 

 sector and cubitus, and a few veins near middle of wing. Pronotum 

 much broader than long, rounded in front. Wings rather broad near 

 tip; about seven or eight crossveins before radial sector, and about ten 

 branches to the radial sector; costals simple; hind-wings a little narrower 

 but scarcely more acute than the fore-wings. 



Expanse 5s mm. 



From Erythraea (Kristensen coll.); types in coll. Banks and 

 Petersen. 



Nesoleon Banks. 



This genus is near Myrmeleon, having several crossveins 

 before origin of the radial fork in hind wings, but a single costal 

 series, and the spurs no longer than basal tarsal joint. There 

 are from 6 to 10 crossveins before radial sector (more than in 

 Myrmeleon , and the spurs or one of them is much shorter than 

 the basal tarsal joint, which is nearly as long as the apical joint ; 

 the antennae are wide apart at base. The wings are broad and 



