1888.] PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 613 



pile ; the incisions between the coxae, trochanters, and femora more or 

 less reddish. 



The male is but Of"" 11 long ; it is like the female except the suture of 

 the 5th abdominal segment as well as the 2d and 3d are crenulate; the 

 5th segment is abnormally shortened. 



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

 4087°, and reared from Agrilus on maple, April 21 and 23 and May 3, 

 1887. 



The cocoon or pupal covering of this species is in the collection at- 

 tached to a piece of maple bark. It is oval in outline, perfectly flat 

 above and beneath, 7 m,n long, 2£ lnm wide, and l niln in depth, and com- 

 posed of delicate silken threads, which are woven into a dense, tough, 

 parchment-like substance. 



The species approaches nearest to B. orbitalis Cr., but the absence of 

 an orbital line and the structure of the abdomen will at once separate it. 



Bracon Kcebelei n. sp. 



Male. — Length, 4§ mni . Head, labial and maxillary palpi, prosternum, 

 and legs, black ; thorax and abdomen sanguineous. Head transverse, 

 nearly twice as wide as long and not full behind the eyes, polished; 

 face covered with pale sericeous hairs ; antennae 49 jointed, nearly as 

 long as the whole insect, very gradually slenderer towards apex ; seape 

 oval, one- third shorter than the width between the eyes, the apex not 

 dilated ; joints of the flagellum, after the first, only slightly longer than 

 wide. Thorax smooth not trilobed, blackish, excepting sanguineous 

 parapsidal lines. Wings black, excepting a pale streak across first sub- 

 marginal cell, connected with a large pale spot just behind the upper 

 angle of first discoidal cell, a spot in the second discoidal cell, and the 

 transverse vein separating the second and third submarginal cells ; 

 tegulae black ; a black spot on mesopleura directly beneath posterior 

 wings. Legs, including coxos, black ; the sutures between coxae and tro- 

 chanters yellowish. Abdomen ovate, about as long as the head and 

 thorax together and delicately rugose; 1st segment with an oval plate 

 and a longitudinal keel or raised line laterally; no shield at base of 2d 

 segment, and, while there are oblique depressions laterally on this seg- 

 ment, they do not form distinct grooves, as is usual in this genus; the 

 sutures between 2d, 3d, and 4th segments are broad, distinct, and sub- 

 crenulate. The whole insect is covered with pale sericeous hairs. 



Habitat. — Alameda County, California. 



Described from one male received from Mr. Albert Koebele. 



Bracon rugosiventris n. sp. 



Female.— Length 6 mm to 8" im ; ovipositor 6 min to 8 mm . Head, antenn», 

 palpi, thorax, excepting "the metathorax, wings, legs, and ovipositor, 

 black; metathorax, excepting a dusky median line and sides, and the 

 abdomen, brownish-yellow. The head is large when viewed from above, 

 quadrate, smooth, and polished, pilose, the hairs on face long and white ; 





