196 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.53. 



Subfamily Vipiinae, new name for Braconinae of Authors. 



Mr. H. L. Viereck has shown that the genera Braco?i Fabricius 

 and CreTTinops Foerster are isogenotypic ^, and that the name Br aeon 

 must be used for the group of species formerly known as Crermiops. 

 Unfortunately this change makes necessary the proposal of a new 

 subfamily name for the Braconinae of authors, since the genus 

 Bracoii is no longer included in that group. The genus Viplo being 

 the oldest genus remaining in the group, it is chosen as the type of 

 the subfamily, which will consequently be known as Vipiinae. 



MICROBRACON SANNINGIDEAE, new species. 



Ver}^ similar to mellitor Say but differs as follows: The eyes are 

 larger, more bulging and slightly wider in proportion to their length ; 

 the nervulus is usually exactly interstitial; the third abscissa of 

 radius is longer than the combined first and second abscissae; the 

 second abscissa of cubitus is usually distinctly shorter than the 

 recurrent nervure; the second abdominal tergite is not emarginate 

 medially, the suturiform articulation being straight instead of 

 angularly broken at the middle. 



Female. — Length 2.25 to 4 mm. Face finely shagreened; head 

 above and the thorax smooth and polished; propodeum mostly 

 smooth but with the apical half more or less rugulose; abdominal 

 tergites finely wrinkled or shagreened ; ovipositor exserted the length 

 of the abdomen or a little more. Eyes and ovipositor sheaths black ; 

 flagellum dark brown or blackish ; tips of mandibles and the tarsi 

 brownish; wings slightly dusky, the costal vein and stigma dark 

 brown, other veins paler; remainder of the body reddish testaceous, 

 the mesonotum sometimes stained with blackish. 



Male. — Similar to the female, but more often with the mesonotum 

 and occasionally the mesosternum stained with blackish. 



Type-locality. — College Park, Maryland. 



Type.—Q-^t. No. 20374, U.S.N.M. 



Host, — Sanninoidea exitiosa. 



Described from many specimens reared by the writer from the 

 cocoons of the peach-tree borer and recorded under Maryland Ex- 

 periment Station Accession Cat. No. 809. 



This species has been confused with mellitor in the literature, but 

 can not be that species, since mellitor is a solitary parasite of Antho- 

 nomus grandis while sanninoideae is always gregarious, as many as 

 35 specimens often emerging from a single host cocoon. 



1 Bull. 83, U. S. Nat. Mus., 1914, pp. 23, 37. 



