658 NEW SPECIES OF BRACONID^E. 



APHIDIUS Nees. 



TABLE OF SPECIES. 



Mules. 



1. Antci 1 11 w less than 20-joiuted 3. 



Antennae 20-jointed 2. 



Antennae more than 20-jointed. 



Black, except the legs. 



Antenna- 26-jointed A. procephali n. sp. 



Antenna 1 22-jointcd, sometimes 21-jointed, the two terminal joints being 

 connate A. pterooomma n. sp. 



2. Second branch of radius not longer than the transverse cubital. 



J. avenaphis Fitch. 

 Second branch of radius distinctly longer than transverse cubital.. .A. lachni n. sp. 



3. Antenme 16-jointed 4. 



Antennae 19-jointed, 



Head black or piceous ; thorax, abdomen, and legs honey-yellow. 



A. xanthus n. sp. 

 Head and thorax black ; abdomeu brown or piceous. 



Hind coxa 1 and legs brown; trochanters aud knees yellowish. 



A. obscuripes n. sp. 



4. Head and thorax black ; abdomen black or piceous. 



Middle and posterior coxae black A. jihorodoiitis n.sp. 



Females. 



1. Large size. 



Head and abdomen piceous black ; thorax and legs ferruginous. 



A. bicolor n. sp. 

 Moderate or small-size species. 



Antenna 1 17-joiuted or less 2. 



Antenna 19-jointed. 



Hind coxae black ; petiole yellow basally A. californicus n.sp. 



Hind coxa pale brown ; petiole black A. lachni n.sp. 



2. Antenme 16-joiuted or less 3. 



Antenna l?-joiuted. 



Head black or piceous ; thorax, abdomen, and legs yellow ferruginous. 



A. pallidas n. sp. 



Head and thorax wholly black 4. avenaphis Fitch. 



Collar, pleura, and met at borax, hrown var. A. avenaphis Fitch. 



3. Antenme 16-jointed. 



Petiole black or piceous, not constricted A. obscuripes n. sp. 



Petiole wholly yellow, strongly constricted at middle A. confusus n. sp. 



Antenme 14-jointed. 



Petiole constricted, basally yellow A. phorodontis n. sp. 



Aphidius bicolor n. sp. 



Female. — Length, 5f mm . Head and abdomen piceous black ; a blotch 

 back of the ocelli and face ferruginous; antenna 1 broken at tips; two 

 basal joints ferruginous, llagellnm black, the joints being about one 

 and a half times longer than thick; thorax ferruginous, smooth, pol- 

 ished, except the disk of mesonotum, which is shagreened ; metathorax 

 black, minutely rugose, its posterior face very oblique aud centrally 



