286 AMERICAN HYMKNOPTERA. 



Var. rivalifs differs in havincr the posterior coxae a bright rufous, while the 

 posterior tibia; aud tarsi are dusky with the yellow anuulus on tibise somewhat 

 obscure; the thorax has all the yellow marking including the scutellum ; abdo- 

 men black only on petiole. 



Two females from Michigan and Philadelphia (Chas. W. Johnson). 

 Types, coll. Davis and College. 



Dialges fasciatus n. sp. 



1, . — 6 nun. Black, with face, scape beneath, mouth-parts, cheeks beneath, 

 tegulse, spot in front, spot beneath, s(;utellums, line on apex of first two abdominal 

 segments and base of hind tibiae, white; antennae fulvous brown: apex of hind 

 femora and their tibiae and tarsi piceous : rest of legs rufous; vv'ings subhyaline, 

 nervures aud stigma brown; areolet present; body broad, shagreened, finely 

 punctured ; parapsidal grooves present ; metathorax without basal transverse 

 carina; basal segment of abdomen granular, broadly oval and with deep median 

 groove. 



One specimen from Massachusetts (coll. Davis). 



N<EMO]¥ Foerster. 

 (.Synopsis der Fam. uud Gatt. der Ichneumonen, 1868.) 



Body short, thickset, polished, punctured and finely pilose. Head 

 flat, broader than long ; front considerably inflated, nearly flat and 

 very coarsely punctured on the shield-like enlai'geraent ; eyes large, 

 deep set ; clypeus wide, arched, straight vertically with a transverse 

 ridge close to the base, apex broadly oval ; segments of antennae 

 short, strong. Thorax broad, oval ; scutellum large, not elevated, 

 rounding ; metathorax punctured with clear cut cariuse, the basal 

 transverse carina wanting. Abdomen well proportioned ; ovipositor 

 exserted and curved; petiole broad, slightly narrowed at base, 

 smooth, faint carinse at base are entirely wanting. Wings reaching 

 to apex of abdomen ; stigma broad, triangular ; peristigma large ; 

 humeral cross-nervure of hind wing broken below the middle. Legs 

 short, strong ; femora incrassate ; last tarsal segment of hind leg 

 more than half as long as the first and longer than third and fourth 

 together. 



Inflated portion on face entirely black. 



l*osterior tibiae color of femur, size small <*alifoi*iiicus Cress. 



Posterior tibiae with au external yellow stripe liiMOriiiS Cress. 



Inflated portion of face yellow, with median dark line paliiiai'iis n. sp. 



]Vceinou californicus Cress. {Tryphon). Pr Acad. Nat. Sci. Phil. 1878. 373. 



9 % . — 4-5 mm. Black, with clypeus, mouth-parts aud tegulae. yellow : abdo- 

 meu rufous, petiole except apex, black; legs rufous, coxae and trochanters black 

 and on posterior legs, apes of femora, tarsi and sometimes tibiae, dusky or pice- 

 ous; antennae piceous; wings subhyaline, nervures and stigma reddish browu ; 

 abdomen polished, finely punctui'ed. 



