61G NEW SPECIES OF BRACONIDiE. 



grooves are distinct, punctate at bottom, lateral sutures of lnesouotum, 

 black ; metatborax finely rugose on disk ; abdomen slightly longer than 

 the head and thorax together; the 1st segment rugose, the plate large, 

 oval, the following segments all distinctly longitudinally striated, ex- 

 cepting the tip of the 4th and the following segments, which are re- 

 tracted in the I tli ; the 2d segment has two distinct oblique grooves at 

 base, but no shield; the hypopygium is long, obtusely pointed, plow- 

 share-shaped. 



Habitat. — St. Catherine Island, Georgia. 



Described from one specimen taken by Mr. E. A. Schwarz, April 20, 

 1880. 



The species bears a superficial resemblance to B. eroceus Cr., but it is 

 larger, and the sculpture of abdomen is very distinct from that species. 



(.') Bracon arizonensis u. sp. 



Female. — Length, 3i mm ; ovipositor, 2f mm . Honey-yellow; eyes, tips 

 of mandibles, and apical portion of 3d abdominal segment, blotches on 

 dorsal surface of the 4th, 5th, and 0th segments, and the ovipositor, 

 black. The bead is transverse, delicately shagreened, the face sparsely 

 covered with white hairs ; the thorax delicately shagreened with three 

 distinct grooves — a median besides the parapsidals — all punctate at 

 bottom ; the scutellum is separated from the mesonotum by a broad, 

 transverse groove, which is crenulate with delicate raised lines; the 

 metatborax is rugose with some irregular raised lines ; abdomen broadly 

 ovate, not longer than the head and thorax together; all longitudinally ' 

 striated, except the apical half of segments 3 and 4, and the following 

 segments ; all the femora are swollen, the last pair being the longest and 

 stoutest. Wings, hyaline; stigma and veins, pale brown; the recur- 

 rent nervure is iuterstitial with the 1st transverse cubital, the latter 

 oblique, the 2d submarginal cell being longer than the first along the | 

 lower margin ; the submarginal cell is a little longer than the median, 

 which would seem to place the species in the group Exothecinw. 



The metatborax in the male is black ; otherwise it does not differ from 

 the female. 



Habitat. — Fort Grant, Arizona. 



Described from three specimens, two females, one male, labeled No. 

 2010°, and reared July 27, 18S3, from a cynipidous oak gall ; collected 

 by Mr. H. K. Morrison, at Fort Grant, Arizona. 



Bracon cecidomyiae. 



Female. — Length, 3 mm ; ovipositor, 2± mm . Honey-yellow, smooth and 

 polished; vertex of head blackish ; antennae 32-jointed, longer than the 

 whole insect, black, excepting the second joint, which is yellow ; parap- 

 sidal grooves not sharply defined, nearly obliterated; lower portion of 

 the mesopleura and mesosternum black; the metatborax has an im- 

 pressed line down the center, the dorsal surface mostly black ; abdo- 

 men ovate, the length of the thorax, lateral edges of 1st segment 



