65G NEW SPECIES OF BRACONID.E. 



Habitat. — Louisiana. 



One specimen received from Mr. Tyler Townsend. This species could 

 only be confounded with H. occidentalis (Jr., but it is larger, and the 

 punctured head, sculpture of pleura and uietathorax, and the darker 

 colored legs, will at once distinguish it. 



GYMNOSCELIS Forster. 



Gymnoscelis yukonensis n. sp. 



Female. — Length, 8""" ; ovipositor, 6f mra . Polished black, legs rufous, 

 tips of posterior femora, tibia', and tarsi, black ; sides of abdomen more 

 or less rufous. The vertex of head is smooth with a few widely sepa- 

 rated punctures; face roughly punctured, pubescent; the maxillary 

 palpi, long, 5-jointed; prothorax rugosely punctate; mesonotum pol- 

 ished ; parapsidal grooves distinct, the disks of the lobes slightly punct- 

 ured, the posterior surface of the middle lobe rugoso-punctate; meso- 

 pleura smooth, polished, the surrounding margins rugose; meta- 

 thorax and metapleura very coarsely rugose; abdomen long, above, 

 subeonvex, the 1st segment and the 2d basally rugose, the following 

 segments smooth. Wings hyaline, veius piceous; the 1st branch of the 

 radius about as long as the 2d, the 2d submarginal cell being trapez- 

 oidal. 



Habitat. — Fort Yukon, Alaska. 



Described from one specimen, received from Mr. L. M. Turner, 1877. 



Subfamily APHIDIINiE. 



As the forms in this group have been arranged in accordance with 

 the views of Dr. Aruold Forster, I give below a table for determining 

 the genera : 



TABLE OF GENERA. 



1. Wings with loss than three cubital cells 2. 



Wings with three cubital cells. 



Abdomen round : oviduct curved beneath the abdomen.. G. (1) Toxares Westw. 

 Abdomen lanceolate ; oviduct not curved beneath the abdomen. 



(;. (2) Ephedrus Hal. 



2. Abdomen lanceolate 3. 



Abdomen round; oviduct curved between the abdomen G. (3) Monoctonus Hal. 



:». First cubital and first disco idal cells confluent or not existing 4. 



First cubital and first discoidal cells separated G. (4) Praon Hal. 



4. First cubital cell and first discoidal cell not closed by a transverse vein 5. 



First cubital cell and first discoidal cell confluent, closed by a cubital transverse 

 vein. 



Metat borax much hump shaped G. (5) Calonotus Fdrst. 



Metathorax not very hump-shaped. 



Radius much elongated, inclosing more than two-thirds of the radial 



area G. (6) Aclitus Fdrst. 



Radius shortened, inclosing hardly one-third of the radial area. 



G. (7) Aphidius Noes. 



