G. C. DAVIS. 299 



in 9 and varies from pale rufous to white in % ; clypeus. mouth-parts, tejfulfe, 

 point in front, line beneath, large spot on lateral margins of mesonotum, lateral 

 stripes on scutelUun, and in % four anterior coxae and trochanters and more or 

 less of face and scape beneath, white; legs rufous to pale rufous, with posterior 

 tarsi and tibiae at apex, dusky ; tibiae pale yellowish to dusky rufous ; abdominal 

 segments more or less rufous ; antennae brown, paler beneath. 



Five specimens from Canada, New Hampshire, New Yoi-k and 

 Washington. 



Mesoleius striatus n. sp. 



'J, 9 • — •'' '""!• Black, with scape beneath, clypeus. mouth-parts, cheeks beneath, 

 orbital lines in 9 . face in % , tegulae, spot in front, triangular spot on lateral mar- 

 gins of mesonotum, small lateral spots near base of scutellum, a stripe on inner 

 basal two-thirds of posterior tibite and apical margins of abdominal segments, 

 yellowish white; four anterior legs and posterior coxae and trochanters pale ru- 

 fous: hind femora piceous to black, and tarsi and tibiae, except inner basal por- 

 tion, nearly black; antennae brown; wings subhyaline, uervures and stigma 

 brown ; transverse median nervure curved with convex portion toward apex of 

 wing. 



Two specimens from New Hampshire, one hibeled as follows : 

 "Carriage road, Mt. Washington, N. H., July 18, 1875, Geo. Dim- 

 mock" (types, coll. Amer. Ent. Soc. and Davis). 



9IesoIeiiis amiax n. sp. 



9. — 7 mm. Black, with clypeus. mouth parts, lateral margins of mesonotum, 

 tegulae, spot before, spot beneath, scutellums, apical margins of abdominal seg- 

 ments and annulus on posterior tibiae, white ; posterior tarsi and tibiae at base and 

 apex black, remainder of legs clear rufous; venter yellowish white; antenntB 

 dark brown; wings hyaline, nervures and stigma brown. 



Three specimens from Colorado and New Hampshire (types, coll. 

 Amer. Ent. Soc. and Davis). 



mesoleiiis piiritanicns n. sp. 



9 . — 6 mm. Black, with face, except median T-shaped spot reaching from 

 antennae to clypeus. anterior orbits, mouth-parts, cheeks beneath, scape beneath, 

 tegulae, line in front, another beneath, lower pleurae, apical margin of abdominal 

 segments, four anterior coxae and trochanters, posterior coxae beneath, apical 

 segment of posterior trochanter and with annulus at base of posterior tibiae which 

 continues on the inner part of the tibiae to beyond the middle forming almost 

 another median annulus, white; posterior legs with coxae above, basal trochan- 

 ters, base and apex of femora, apex of tibiae, with posterior stripe extending 

 upward nearly to base, and tarsi piceous to black : remainder of legs and the 

 sternum rufous ; antennae dark brown ; wings subhyaline. nervures and stigma 

 brown; basal segment of abdomen slightly oval above and with carinas distinct 

 nearly to apex. 



One specimen from New Hampshire (coll. Amer. Eut. Soc). 



Mesoleins pertiiiax n. sp. 



9 . — () mm. Black, with clypeus, mouth-parts, tegulae. spot in front, tibial 

 spurs and broad median annulus on posterior tibiae, yellowish white: posterior 



TRANS. AM. ENT. SOC. XXIV. OCTOBER, 1897. 



