350 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxxi. 



CHLORION (ISODONTIA) EXORNATUM (H. Fernald). 



Isodontki exornaia H. Feknald, Can. iMit., XXXV, 1903, p. 270. 



Cotypes. — Five male and two female specimens now in the collections 

 of the U. S. National Museum in Washington (Type, Cat. No. 6931, 

 U.S.N.]M.), American Entomoloj^ical Society in Philadelphia, Massa- 

 chusetts Agricultural College, Amherst. Massachusetts, and Dr. W. H. 

 Ashmead, Washington City. 



Body rather slender, black, parts of the antennt\? and legs and the 

 petiole yellow; wings deep fuliginous, with a slight violet reflection. 



Female. — Head; clypeus somewhat arched laterally, with a faint 

 median carina most pronounced posteriorly, sometimes not percepti- 

 ble; anterior margin quite broad, slightly reflexed, with two short, 

 blunt teeth close together at the middle; surface sparsely covered with 

 yellow hairs; clypeus and frons to the level of the insertion of the 

 antenna? golden pubescent; frons, vertex, and cheeks with scattered 

 punctures and long yellowish hairs; cheeks wntli a narrow, yellow, 

 pubescent band just behind the eye; eyes slightly converging toward 

 the cl3"peus; antenna?, tirst six to eight segments yellow ferruginous, 

 the remainder black; scape with a few yellowish hairs; first segment 

 of the lilament longest; mandibles two-toothed, ])lack at the base and 

 tip; elsewhere ferruginous. 



Thorax. — Collar faintly punctured, clothed with scattered yellow 

 hairs; its dorsal edge and the posterior margin of the prothoracic lobe 

 golden pubescent; mesonotum black with yellow hairs, rather coarsely 

 punctured and with a short, median groove extending about one-third 

 the length of the plate from its anterior edge; scutollum punctured, 

 the punctures rather more scattered than on the mesonotum; on each 

 side just internal to the attachment of the hind wing is a golden pubes- 

 cent spot; postscutellum covered with golden pubescence; median 

 segment coarsely punctured; a golden pubescent band on each side 

 passes from a point just lateral to the edge of the pubescence on the 

 postscutellum downward and backward below the stigma to the poste- 

 rior coxa; posterior end of the median segment between the fovea 

 which is h3^phen-like and the petiole, with a somewhat quadrangular, 

 golden pubescent spot; the end and sides of the median segment quite 

 thickly clothed with yellowish-brown hairs; mesopleuron with a some- 

 what triangular, golden pubescent spot just behind the prothoracic 

 lobe, and sometimes with a smaller one between this and the base of 

 the fore wing; mesopleuron and the upper part of the metapleuron 

 rather coarsel}" punctured and sparsely clothed with long 3'ellow hairs; 

 petiole long, slightly curved, ferruginous 3'ellow, somewhat darker at 

 the base beneath, with numerous 3'ellowish hairs; its posterior por- 

 tion yellowish pubescent. 



