148 Journal New York Entomological Society. t Vo1 - xxvii. 



Eriocera argentina new species. 



Coloration black throughout ; antennae short ; a narrow gray line around 

 the inner margin of the eyes ; wings with cell M x lacking. 



Male. — Length, 11-11.4 mm.; wing, 9.3-10 mm. 



Rostrum and palpi black. Antennae short, black. Head with the frontal 

 tubercle prominent, divided into two parts by a broad median furrow ; head 

 black with a narrow gray line surrounding the outer side of the frontal tu- 

 bercle and continued back around the inner margin of the eye. 



Mesonotal praescutum with a sparse gray bloom on the restricted inter- 

 spaces, the stripes very broad, black; scutum, scutellum and postnotum black. 

 Pleura and coxae black with a very sparse gray bloom. Halteres and legs 

 black. Wings strongly suffused with blackish ; costal region a little darker ; 

 veins black. Venation (Plate I, Fig. 7) : r inserted on R 2 , just beyond the 

 fork of R 2+s and near the tip of R 1 ; cell M i lacking. 



Abdomen black. 



Habitat: Argentina. 



Holotype, J\ La Plaza, Province of Catamarca, altitude 2,400 

 meters, February 18, 191 5 (P. Jorgensen). 

 Paratopotype, £. 

 The types bear the label " on the rivulets." 



Genus Penthoptera Schiner. 



Penthoptera sanctae-martae new species. 



Coloration dark brownish-black ; legs dark, the tarsi largely pure white ; 

 wings strongly infumed ; cell M t lacking. 



Male. — Length, about 6.5 mm. ; wing, 8.3 mm. 



Rostrum and palpi dark brownish-black. Antennae rather short, black. 

 Head black with a sparse grayish bloom. 



Mesonotum dark brownish-black. Pleura a little grayish. Halteres long, 

 dark brown. Legs with the coxae and trochanters dark brown ; femora dark 

 brown, the extreme bases yellowish ; tibiae dark brown ; metatarsi with the 

 basal two-thirds dark brown, on the hind legs less extensive, occupying less 

 than the basal half; remainder of the tarsi, excepting the last two segments, 

 white. Wings with a strong brown tinge, the costal region and the wing-apex 

 a little darker ; stigma small, oval, dark brown ; veins dark brown. Venation 

 (Plate I, Fig. 9) : r at the tip of R x ; deflection of R i+5 obliterated, r-m being 

 inserted just before the fork of the sector; cell M t lacking; r-m and the inner 

 end of 1st M 2 in alignment ; basal deflection of Cu t far beyond midlength of 

 cell 1st M 2 ; second anal vein very short. 



Abdomen dark brownish-black, the genital segment a little brighter. 



Habitat: Colombia. 



Holotype, g, Santa Marta Mt., December 31, 1916 (E. B. and J. 

 H. Williamson). 



