3f0. 2340. TRIBE EPHIALTINI OF THE ICHNEUMONINAE—CUSHMAN. 353 



and those of mesopleura and mesosterum. The type of componotus 

 is also from a locality far west of the most western known range of 

 picticornis, being from Idaho. 



APECHTHIS PACIFICLS, new species. 



Easily distinguished in both sexes from any of the above-men- 

 tioned species by its tricolored front coxae, by the fact that the 

 middle, as well as the hind tibiae are black with a white annulus, 

 and from all but componotus by the yellow margined mesoscutum. 

 The female differs from Ontario in having a small tooth at the base 

 of the hind claw and from annulicornis in this tooth being much 

 smaller than in that species. The male differs from all described 

 North American males in not having the face entirely yellow. 



Female. — Length, 12 mm.; antennae, 10 mm.; ovipositor, 2 mm. 



Head shining; face sparsely, weakly punctate; temples weakly, 

 evenly convex, very sharply sloping; malar space a third as long as 

 basal width of mandible. Thorax shining, dorsal angle of pronotum, 

 mesoscutum, scutellum, mesopleura (except posteriorly), mesos- 

 ternum, and metapleura sparsely, weakly punctate; propodeum 

 laterally and at sides dorsally distinctly, rather densely punctate, 

 medially and posteriorly polished; notauli rather sharply but very 

 briefly impressed; propodeum in profile strongly rounded dorsally, 

 rather precipitate posteriorly, not at all angulate at the sides, and 

 with the upper hind angles barely indicated, carinae weakly diver- 

 ,gent, strong dorsally but not extending onto the posterior face; 

 basal teeth of all tarsal claws small, those of hind tarsi extremely 

 so. Abdomen very densely, finely punctate, the punctures longi- 

 tudinally elongate, tubercles strong, transverse; first tergite strongly 

 xingulate above, laterally rugosely coriaceous; second tergite nearly 

 .as long medially as wide at apex. 



Blav^k; mandibles, first two joints of maxillary palpi; inner orbits, 

 a semicircular spot at top of eye, tegulae, humeral angle of pronotum, 

 sides of mesoscutum from tegulae to notauli, a small spot at each side 

 of middle of mesoscutum just in front of scutellum, and apices of 

 scutellum and postscutellum white or whitish; apical three joints of 

 maxillar}^ palpi and entire labial palpi fuscous; antennae black, 

 brownish beneath; pedicel and basal joint of flagellum white marked 

 beneath; front coxae black with a white spot in front and a red 

 stripe outwardly; other coxae and middle and hind trochanters and 

 femora testaceous; the hind femora apically infuscate; front femora 

 and trochanters pale testaceous, whitish in front; hind tibia and tar- 

 sus black, the tibia with a broad white annulus, and the tarsal joints 

 all more or less white basally; this pattern repeated, but less con- 

 trastingly, on the middle and front legs, the dark color not extend- 

 ing entirely around the tibiae and the tarsi being white with the 

 181404— 21— rroc.N.M.vol.58 23 



