XXXJV, '23] ENTOMOLOGICAL NEWS 17 Undescribed Species of Eriocera and Penthoptera from Tropical America (Tipulidae, Diptera). By CHARLES P. ALEXANDER, Amherst, Massachusetts. The new species described in this paper were collected by E. B. and J. H. Williamson-and \Y. H. Ditzler, in Venezuela, and by J. H. Williamson in Peru. Through the kindness of the collectors, the author has been permitted to retain the types in his collection. Eriocera longipennis sp. n. Antennae short in both sexes; general coloration reddish fulvous; wings long and narrow, brown ; stigma very small ; abdomen and legs dark brown. c?. Length 9.5 mm.; wing 15.5 mm. Rostrum brown, the palpi dark brown. Antennae short, dark brown. Head fulvous, the anterior part of the vertex more suffused with brown. Mesonotum reddish fulvous, the praescutum with a narrow and indis-tinct brown line. Pleura brownish fulvous, the dorso-pleural membrane dark brown. Halteres dark brown, the base of the stem paler. Legs with the coxae and trochanters testaceous ; remainder of the legs black, the bases of the femora paler. Wings long and narrow, strongly tinged with brown; stigma very small, faintly indicated, dark brown; veins dark brown. Venation : Sc extending a short distance beyond the fork of Rs, Sc2 about opposite the fork of Rs : Rs very long, much longer than R4-\-5 ; basal deflection of the latter very short ; cell Ml lacking ; veins issuing from cell 1st .1/2 long and slender ; basal deflection of Cul just beyond the fork of M ; Cn2 a little shorter than the basal deflection of Cul ; cell 2nd A very narrow ; anal angle lacking. Abdomen dark brown, the hypopygium a little brighter. Habitat. Venezuela. Holotype, $ , Macuto, January 29, 1920 (Williamson). It is possible that Eriocera longipennis may more properly be considered a species of Penthoptera. Eriocera dimidiata sp. n. Antennae short in both sexes ; general coloration black, the mesonotal scutellum and postnotum reddish; pleura reddish, marked with black; wings with a strong brownish suffusion. $. Length 10 mm.; wing 13 mm. 9. Length 12 mm.; wing 11.6 mm. Rostrum and palpi dark brown. Antennae short in both sexes, black. Head brownish black, the occiput more brownish ; vertical tubercle very conspicuous, each lateral angle produced into a conical knob.