Hagen.] 286 [March 17, 



is nearer to the apex than the first ; four internal gradate ; hind wings 

 hyaline, veins pale, with six and four gradate series, the external 

 often blackish ; last segment of male yellowish, above the spoon- 

 shaped ventral valve two long, brownish, sharp, flat spines, excised 

 largely externally on tip ; a pale, small penis between them curved 

 upwards and somewhat inflated just before the tip ; dorsal segment 

 split from below nearly to the top ; two small darker appendages 

 with the tip a little incurved are seen very near together in the in- 

 terior of the dorsal segment ; apex of the female abdomen blunt, 

 pale. 



Hab. I have 15 specimens (4 $ ) before me from Philadelphia ; 

 New York, West Point ; Massachusetts, Cambridge, Beverly, 

 Provincetown, July 21 ; Rock Island, J. W. Walsh; from Upper 

 Wisconsin River, Kennicott ; from Morganton, North Carolina, 

 Morrison. 



Mr. M'Lachlan suggests, Journ. Linn. Soc, ix, 274, that M. in- 

 sipidus may be H. posticus Walker. Indeed, the description 

 agrees, but it is placed among the species with three sectors, and 

 besides I have compared in London my type of M. insipidus with 

 Walker's species, and noted nothing about the identity. Of the 

 two types from Georgia of H. posticus, one has four sectors and 

 seven and five gradate veins ; the other has three sectors and six and 

 three gradate veins ; I presumed the latter one to be H. posticus type. 



M. insipidus is not among the types of A. Fitch. 



Micromus sobrius Hag., Syn., p. 199, no. 5, should be better 

 united with M. insipidus. When I described those species I had 

 of M. sobrius, only two males, of M. insipidus, only two females, 

 before me, which are still in the collection. Now I find no reliable 

 difference between the two species. The appendages of the males 

 are not well known except for the spines, and even those are not 

 easy to be seen. 



9. Micromus Cubanus n. sp. 



Micromus Cubanus Hag. 



Long. c. al. 8 mm. ; exp. al. 14 mm. 



Similar to the smaller specimens of M. insipidus. The tibiae 

 have two black spots ; the front wings are not mottled with brown 

 on the membrane, but all veins are alternately yellow and dark 

 brown ; five sectors ; external gradate veins seven ; internal four. 



