THE CANADIAN ENTOMOLOGIST. 375 



the length of tlie thorax, the antennae not the same, but longer and fili- 

 form ; genitalia exserted in death ; eyes oval, riot ovate. 



Scape slightly longer in proportion to the pedicel, ring-joints and first 

 two funicle joints, the pedicel and ring-joints relatively shorter, the first 

 two funicle joints relatively longer, than in the female ; flagellum filiform ; 

 pedicel obcuneate, small, twice the size of the combined ring-joints, but 

 only about a third the length of the first funicle joint ; both ring-joints 

 narrow longitudinally, subequal ; first funicle joint longest, twice the 

 length of the ring-joints and the pedicel combined and a fifth longer than 

 the second joint ; funicle joints 2 and 3 and 4 and 5 subequal, each a 

 little shorter than the one immediately preceding, but all longer than 

 wide, the 6th only a third shorter than the first and more than a third 

 longer than the proximal club joint ; club slightly narrower, its proximal 

 and intermediate joints subequal, the latter slightly shorter and each 

 about half the length of the first funicle joint or less ; the apical club joint 

 distinctly smaller, subequal to the pedicel, obtusely conic. (Fig. B). 

 Hairs of antennae about as in the female ; in balsam mounted antennae, 

 or under the microscope, appearing as though they were in circular rows 

 of white ridges around the joints, in two or three series, or single as the 

 case might be; in three series or rows on joint i of funicle, in two rows 

 on joints 2-6 of funicle, and in a single row on the club joints; in the 

 latter cases the hairs reaching to or beyond the apices of the respective 

 joints ; on the first funicle joint, the hairs originating at the base of each 

 third and a third the length of the joint ; on the remaining funicle joints 

 at the base of each half and as long as the respective halves. Scape and 

 pedicel practically impubis. Mandibles as in the female. 



(From 3 specimens, 2/3-inch objective, 2-inch optic, Bausch and Lomb.) 



Described from three males and nine females received for determina- 

 tion from Mr. R. L. Webster, of the Iowa Agricultural Experiment 

 Station, Ames, Iowa, and bearing the following labels : "Exp. 204, 29, 

 30 July, 1908" (i(^, 3 $s); "Exp. 205, 31 July, 1908" (r ?); and "Exp. 

 332,5-14 Oct., 1908" (2 c^s, 4 $s); and "Exp. 177, July 27, 1908" 

 (i $ ). Appeared in breeding-cages containing the larvae of (Alceris) 

 Perovea ininuta (Robinson), after the ichneumonoid Clinocefitrus 

 americanus Weed and before the entedoninine Horisvieiius microgaster 

 (Ashmead). Reared at Ames, Iowa, from host material collected at 

 Shenandoah and Des Moines, Iowa. (Webster, 1909). 



Types. — Accession No. 40,28^, Illinois State Laboratory of Natural 

 History, Urbana, Illinois ; 6 9 s on tags and i (^ , 2 $ s antennae in 



