XI, D, 3 Banks: Neuropteroid Insects 209 



Protacheron philippinensis Weele. 



Described from Florida Blanca Mountains, Luzon, and since 

 recorded from Celebes and Java. The male with hyaline wings, 

 in female the hind wings are dark near the outer hind margin. 



MYRMELEONID^ 



Key to the genera. 



a'. In fore wing the second and third anal veins are separate, but connected 

 by a cross vein; a line in apex of the wing. 

 6\ Legs and spurs very long and slender; wings not excised nor sinuated 

 on the outer margin ; first tarsal joint about as long as the last. 



Dendroleon. 

 b'. Legs and spurs shorter; first tarsal joint shorter than the last; wings 



more or less excised on the outer margin Episalus. 



a*. In fore wing the second and third anal veins are united for at least one 

 point, 

 c'. One cross vein before origin of radial sector in the hind wing. 



(f . In fore wing the anal runs parallel to the cubitus for a long distance ; 



first tarsal joint very long Protoplectron. 



(f . Anal diverges from cubitus. 



e\ Legs rather short and stout; spurs about equal to three or four 



tarsal joints Distoleon. 



e'. Legs very slender; the tibia about as long as femur. 



f. Radial sector in fore wing arises much before the cubital fork; 



spurs as long as three or four joints Acratoleon. 



f. Radial sector arises much beyond the cubital fork ; spurs shorter ; 



claws very long Paraglenurus. 



c'. Three or more cross veins before origin of radial sector in the hind 

 wing. 

 g^. Legs short and stout; spurs bent; body very hairy.... Acanthaclisis. 

 g'. Legs more slender and less hairy; spurs only slightly curved. 

 h^. Wings very broad at stigma ; a series of connecting veinlets before 



stigma in fore wing Hagenomyia. 



h*. Wings more slender, no such series of connecting veinlets. 



Myrmeleon. 

 Dendroleon sanchezi Navas. 



Described from Luzon, under the name Delgadus. I have not 

 seen it. 



Genus MYRMELEON Linnaeus 



The two species so far received may be distinguished as 

 follows : 



Key to the species. 



o\ Vertex all black celebesensis. 



a'. Vertex with two pale spots angustipennis. 



Myrmeleon angustipennis sp. nov. Plate II, fig. 16. 



Practically only a form or variety of M. tenuipennis Rbr., 



