1864.] 47 



2. Antcnnse of the male irlth three rows of hranrhes ; the thinl. 

 intcnnc(U(tte one^ is shorter than the lateral ones ; antennae, of the female 

 elongated^ suhfliform ; male genitah large^ clavate ; female oripasitor 

 neri/ long, sirord-shaped. 



C. fumipennis u. sp. "J, ? • 



Nigra, alis fuliginosis : 'J, abdomine pedibusque nigris; 9 ^''f^on'i'^f iiigi''>. 

 basi ferrugineo, pedibus ferrugiiieis. 



Black, wings smoky black : % with the abdomen and feet black : 9 abdomen 

 black, ferruginous at the basis; feet ferruginous. 



Long. c<jrp. '^0.8, ? (i.ll : long. al. %i)Su). J 0.8. 



Head altogether black, with black hair. Antennse of the male of moderate 

 length, with three rows of branches, the intermediate branches short: the 

 three first joints black, flagellum brownish with whitish branches or altogether 

 whitish. Antennse of the female longer than head and thorax together, basal 

 joints black, Hagellum more or less ferruginous, extreme tips of the joints black, 

 terminal joints more or less infuseated, the first joint of the fiagellum is but 

 little shorter than the first antennal joint, the following joints of the flagellum 

 gradually decrease in length; the four or five penultimate joints are subellip- 

 tical and of about equal length. The whole thorax black, shining; a whitish 

 spot on the posterior end of the membrane between the collare and the root of 

 the wings. Halteres with a blackish stem and a dingy whitish knob, or alto- 

 gether blackish ; abdomen of the male altogether black with large, club-shaped 

 genitals ; abdomen of the female black, the two basal segments ferruginous : 

 the latter half of the abdomen is tapering and ends in a long, sword-shaped 

 ovipositor. Feet of the male black, the foremost pair rather brownish: the fore- 

 most tarsi livid-brownish from the tiji of the first to the base of the fourth joint : 

 feet of the/effia/e ferruginous, coxse and trochanters black: tarsi brownish, ex- 

 cept the first and the root of the second joint, which are ferruginous. Wings 

 uniformly brownish ferruginous, with a dark brown stigma. The second and 

 third longitudinal veins are nearly parallel, only very slightly diverging to- 

 wards their tip. 



Hah. Virginia (Dr. Wilson.) 



Observation. — One of the male specimens seen by me in the Cabi- 

 net of the Entomological Society in Philadelphia, has the basal two- 

 thirds of the wings almost hyaline, and the apical third is less brown- 

 ish than in the other specimens. There is also a small hyaline spot 

 beyond the stigma. It is evidently only a variety. 



C. topazina n. sp. % ^ . 



Nigra, vel ferruginea; abdomine plerumque flavo-ferrugiueo, vitta nigra: tho- 

 race vitta laterali flava. pedibus ferrugineis; alis flavescentibus, stigmate fusco. 



Black, or ferruginous; abdomen generally yellowish-ferruginous with a black 

 stripe; feet ferruginous; wings tinged with yellow; stigma dark brown. 



Long. Corp. "^ 0.7-0.75, 9 0.9-0.10; long. al. -J, 0.65. 



