ART. 8. ASHMEAD MANUSCRIPT ICHNEUMONIDAE CUSHMAN. 13 



EUCEROS COUPERI Cresson. 



Euceros couperi Ceesson, Can. Eut., vol. 1, 1S69, p. 104. 

 Euceros couperi Davis, Trans. Amer. Ent. Soc, vol, 24, 1897, p. 255. 

 " Scorplorus flavopictus Asbm., n. sp.," Slosson, Ent. News, vol. 13, 1U02, 

 p. 6. 



EXOCHUS ALPINUS, new species. 



"Amerolijtns flavifrons Aslnn.," Slosson, Ent. News, vol. 17, 1906. p. 324. 



Very closely related to evectus Cresson, differing as follows : 



Male. — Length, 4 mm. ; antennae, 3 mm. 



Face shining, sparsely punctured ; mesoscutum practically impunc- 

 tate; scutellum distinctly, though slightly, convex; first tergite 

 slightly wider at apex than long; second a little more than half as 

 long as wide at apex ; third and fourth fully twice as wide as long ; 

 tergites 1 to 4 strongly punctate at least at base, the first polished 

 medially; scape, pedicel, and few basal joints of flagellum yellow; 

 scutellum and postscutellum not yellow at apex; legs stramineous; 

 hind coxae at extreme base more or less blackish; hind femur in mid- 

 dle and tibia at apex pale testaceous. 



Type locality. — Alpine region of Mount Washington, New Hamp- 

 shire. 



Type.—C2Lt. No. 25017, U.S.N.M. 



Two males from Mrs. Annie T. Slosson. 



EXOCHUS MANDIBULARIS, new species. 



" Polijclistus frontalis Ashni., MS." Slosson, Ent. News. vol. 13, 1902, p. 321. 



Chiefly remarkable for the swollen and basally constricted mandi- 

 bles, the thin, flat, and apically strongly rounded clypeus, and very 

 short antennae. It differs from alphms as described above as fol- 

 lows : 



Male. — Length, 6mm. ; antennae, 3 mm. 



Face more densely punctured; clypeus flat, thin, polished with very 

 sparse punctures, strongly rounded, almost angulate in middle at 

 apex : mandibles swollen in middle, constricted at apex ; antennae 

 only slightly more than half as long as body; mesoscutum sparsely 

 though distinctly punctured, especially laterally ; scutellum flat ; first 

 tergite much longer than wide at apex ; second quadrate ; third and 

 fourth only slightly wider than long ; tergites polished, at most with 

 minute and sparse punctures; flagellum not pale below at base; 

 scutellum yellow apically and laterally ; postscutellum narrowly yel- 

 lowish ; upper angle of prepectus with a yellow spot ; hind coxa and 

 femur testaceous, the latter whitish at apex, the tibia narrowly black- 

 ish at base and apex. 



B}^ most of the above characters it more closely resembles evectus 

 Cresson, from which the clypeal and mandibular structure will dis- 

 tinguish it. 



