Vol. XXXl] ENTOMOLOGICAL NEWS 15 



cate the relation of the species. The size and shape of the 

 radial cell seem to give good specific characters and it is best 

 studied of course in balsam mounts, but a two-thirds objective 

 and ocular micrometer will serve the purpose on well mounted 

 pinned specimens. As here used the "radial cell ratio" is 

 the length of the radial cell divided by the width (inside 

 measurements) and the "cell to wing ratio" is the maximum 

 width of the front wing divided by the greatest width of the 

 radial cell. 



Genus CHARIPS Haliday. 



Scutellum with 1-2 pits subgenus Bothrioxysta Kieffer. 



9 ; bred from Siphonophora ambrosiae on Ambrosia; Massachusetts 



ambrosiae Ashmead. 



Scutellum without pits subgenus Charips Haliday. 



"Head higher than broad." 



cf and 9 ; bred from an aphid on Tanacetum; Massachusetts 



areolata Kieffer. 

 cf and 9 ; bred from Aphis atriplicis; Massachusetts 



hayhursti Kieffer. 



Head broader than high or not stated. 

 9 antennae 14-segmented. 



d 71 and 9 ; bred from aphid on pine in Florida, .lachni Ashmead. 

 9 antennae 13-segmented. 

 "Radial cell almost twice as long as broad"; female; California 



bakeri Kieffer. 

 Radial cell ratio i :2.i4; cell to wing I :,54; male; reared from orange 



aphis, Florida xanthopsis Ashmead. 



Radial cell ratio 1:2.3; ce ^ to wing 1.5.0; segm'ents 3, 4, 5 in male 



antenna all excised; male and female brassicae Ashmead. 



Radial cell ratio 1:2.3; cell to wing 1:8.6; female; reared from 



tomato aphis in Florida megourae Ashmead. 



Radial cell ratio 1:2.4; ce ^ to wing 1:7.0; segments 3, 4, 5 in male 

 antenna not excised; male and female leguminosa Weld. 



Charips (Charips) leguminosa new species. 



9 . Polished black, legs and first five segments of antenna testaceous. 

 Head broader than thorax with scattered white hairs; facial line .8 and 

 axial .56 of transfacial ; lateral ocelli farther from each other than from 

 eye; interocular area slightly broader than high; malar space equal to 

 ocell-ocular; antennae 13-segmented, first and second stout and subequal, 

 3-5 slender and becoming shorter, 6-13 incrassated and increasing in 

 length to 1 2th with last one and one-half times preceding, all last eight 

 showing in balsam about four longitudinal ridges in the middle of each 

 of which is an elliptical clear spot. 



Pronotum with scattered white hairs. Mesoscutum broader than long, 

 without trace of grooves but a few microscopic white hairs. Scutellum 

 li.ill" as long as mesoscutum, conical in outline but rounded behind, no 

 pits at base. 1'ropodeum with (wo outwardly bent cannae eiiclo^ini; a 



