THE myce;tophii.id.5; of north America. 237 



coalesced part of the media a little longer than the petiole. 

 Tibije and tarsi appear infuscated because of the longitudinal 

 rows of the black setulse ; metatarsi of middle and hind legs 

 sparsely ciliate on flexor surface with short setae. Described 

 from a specimen from the Western states. The species was 

 recorded from Kaslo, British Columbia, by Mr. Coquillett. 



3. Ceroplatus clausus Coquillett. ^ 

 1901. clausus, Coquillett, Proc. U. S. Nat. Mus. XXIII. 594. 

 Male and female. Length 7 to 8 mm. Yellow, upper part 

 of head brownish yellow, a black ocellar dot, the antennae, 4 

 indistinct vittae on mesonotum, i or 2 spots on pleura, a fascia 

 at base of each segment of abdomen and knobs of halteres 

 brown; antennae greatly compressed, the joints except last one 

 wider than long; wings (fig. 82) hyaline, a grayish brown spot 

 fills the cell R2+3 and encroaches on the adjoining cells; sub- 

 costal vein extends considerably beyond the base of the radial 

 sector ; subcostal crossvein close to the humeral, R2+= ends in 

 Ri at about its length before the apex of the latter, costa 

 scarcely extending beyond the apex of R4+5, cubitus forks con- 

 siderably beyond the base of the radial sector. Recorded from 

 New Hampshire and New Jersey by Coquillett. I have speci- 

 mens from Ithaca, New York. 



4. Ceroplatus mdlitaris n. sp. 

 Male. Length 8 mm. Face, palpi, posterior margin of eye, 

 and narrow space over base of antennae, yellow ; vertex pos- 

 terior part of head, antennae, and a slender streak between 

 antennas brown; ocellae area black; basal joint of antenna with 

 tubercle below. Thorax mainly yellow, with 6 dark brown 

 longitudinal stripes, the median pair meeting posteriorly 

 and produced upon the scutellum, sometimes a slender 

 median line between this pair, the latter sometimes 

 connected by a transverse stripe anteriorh/; the first 

 laterals somewhat broader than the median p'lr; the second 

 laterals on the margin of the mesonotum, v row, and some- 

 times interrupted, usually reaching the base r . the wing, pleura 

 with large brown spot, sternum and margi 1 of the prominent 

 pteropleural lobes infuscated; scutellui.i and metanotum 

 yellow. Setae on thorax short, black and sparse ; those on 



