No. 22.] HYMENOPTERA OF CONNECTICUT. 183 



antennas; legs, excepting tarsi and hind tibiae, mostly- 

 blackish stramineous; tarsi dusky; hind tibiae and their 

 tarsi mostly blackish, the former pale at base; notauli not 

 extending to middle of mesonotum; abdomen mostly black- 

 ish; second dorsal abdominal segment almost concolorous 

 with hind femora; stigma and veins blackish; mandibles 

 emarginate beneath; second abscissa of radius not much 

 shorter than third. Length 2.5 mm. (female) pequodorum 



*0. (Allotypus) exareolatus Viereck (new species). 



Female : length 2 mm. ; black ; scape and pedicel yellowish 

 in front, flagel dark brown or black; tegulse pale castaneous, 

 wings transparent tinted with brown, stigma and veins brown; 

 legs mostly stramineous except hind tibiae and tarsi which are 

 dusky ; the former with a stramineous annulus at base ; abdomen 

 with first, second, fifth and following dorsal segments more or 

 less dark brown, the third and fourth segments mostly blackish ; 

 first dorsal abdominal segment longitudinally striate ; propodeum 

 rugose. Apparently related to O. apicalis Gahan. 



Type locality: Branford, 20 July, 1905 (H. W. W.). 



*0. (Hypolabis) pequodorum Viereck (new species). 

 Remarkable in having the mesonotum divided by a median 

 longitudinal sulcus. Apparently related to O. americanus Gahan. 

 Type locality: West Haven, 27 June, 1905 (H. L. V.). 

 *0. (Desmiostoma) novaeangliae Viereck (new species). 

 Type locality: Connecticut. Type in collection of American 

 Entomological Society, Philadelphia. 



Cardiochiles Nees. 



Toxoneuron Say. 

 °C. populator Say. 



Length 10 mm. ; black ; abdomen red ; wings dark fuliginous ; 

 exserted portion of ovipositor longer than the abdomen. 



°C. tibiator Say. 



Length 5 mm. ; black ; wings hyaline with a fuscous tip ; fore 

 tibise and tarsi yellowish white; mid tarsi whitish, hind tibiae 

 white at base. Parasitic on a leaf-roller infesting the black 

 locust. 



C. viator Say. 



Reddish ; length 6-7 mm. ; head partly black, appendages of 

 head black; lower half of thorax, propodeum, coxae, trochan- 



