116 



The species is named for C E. Pemberton, whose studies 

 of the biology of the parasites of fruitflies have been of unusual 

 interest. He began studies of the life history of this species 

 which have been continued by H. F. Willard, To Mr. Willard 

 I am indebted for a series of specimens of this species bred 

 from Pectiijopliora gossypiclla in the course of his studies upon 

 the species. 



Since writing the des<'ri])tion above ]\lr. Willard has -hown 

 me specimens used in refrigerator experiments in whirl: the 

 mesosternum is largely black. 



Microbracon Swezeyi, n. sp. 



Bracon sp. and Bracon sp. ? Swezey. Proc. Haw. Ent. 

 Soc. 3:109. 1915. 



$ . Yellow, tips of mandibles, edges, ocelli, antennae, ovipositor 

 sheaths, ungues and apex of last tarsal joint black or blackish, head 

 more or less piceous, propodeum and ist and 2nd tergites suffused 

 with fuscous sometimes pale, wings grayish hyaline, the nervures col- 

 orless, very translucent, the second transverse cubital nervure obso- 

 lescent. 



Head and thorax highly polished, smooth and shining; propodeum 

 reticulorugose, the spaces round but hardly punctiform, a crenulate 

 line down its middle; abdomen rugulose, tergites 1-3 longitudinally, 

 the following transversely and more finely rugulose ; furrow between 

 the first and second tergites smooth narrowly interrupted in the mid- 

 dle; furrow between the connate second and third tergites crenulate, 

 tergites 4, 5 and 6 contracted at base, hardly furrowed. 



Antennae about 36-jointed, not as long as the head, thorax and 

 abdomen together; ovipositor short, not more than half the length of 

 the abdomen. 



Length 3.5 mm. ; wing 3 mm. ; ovipositor .75 mm. These are the 

 measurements of the type. The other $ $ are considerably smaller. 



^ Similar, the abdomen very slender. 



Described from 1 9 (the type) bred by O. H. Swezey 

 from Bactra siraminea (Butler), Jan. 7, 1913, 4 9 and 2 $ 

 bred from Batracliedra cuniculator Busck May 4, 1914, Lepi- 

 doptera whose larvae feed in the brackish-marsh sedges in the 

 Kewalo district of Honolulu. I have also 1 9 taken at Wai- 

 kiki in 1917, aud C 9 and 2 S taken in the marshes there 

 Mav 30, 1919 (Bridwell). 



