ART. 9 TWO-WINGED FLIES OF TEIBE MILTOGRAMMINI ALLEN 7 1 



divergent posteriorly, at level of lowest orbitals, three to four times 

 width of either parafrontal; frontal row of seven to nine bristles; 

 facial ridges with but two to three small bristles inserted directly 

 above vibrissae; antennae red, extending about five-sixths distance 

 to vibrassae, third joint three to four times length of second; arista 

 thickened on basal three-fifths, penultimate joint almost twice its 

 width; parafacials bare or sparsely beset with black bristly hairs, 

 distinctly narrowest at the lower corner of eye; in profile, bucca 

 equals one-sixth eye height; palpi yellow. Thorax and scutellum 

 densely gray pollinose, without distinct vittae; intermediate pair of 

 marginal scutellar bristles larger than the other two equal pairs; 

 small preapicals present. Abdomen gray to golden pollinose, first 

 segment somewhat more thinly so, with a median polished black spot, 

 intermediate segments each with one to three triangular black spots, 

 in third sometimes coalescing to form a continuous apical band, fourth 

 polished black with pollinose band on basal half; one lateral and one 

 median marginal pair of bristles on the first and the second segments, 

 third and fourth segments with median marginal rows of about ten. 

 Genitalia (pi. 1, fig. 6) as in fumosa excepting the claspers, which are 

 smaller. Wings hyaline; often slightly clouded in middle from discal 

 cell to costal margin; section of fourth vein beyond bend strongly 

 arcuate, distance from bend to hind cross-vein about half length of 

 preceding section; last section of fifth vein much less than half the 

 preceding section. Legs black; second joint of fore tarsus bearing 

 on ventral side a conspicuous tuft of long bristly hairs not horizontally 

 flattened or cupped when viewed from above; last three tarsal joints 

 much reduced in size and arched above the brush-like tuft, third 

 segment distinctly broader than the two apical joints which are 

 slenderly elongate; hind tibia with outside row of about nine uneven 

 bristles. 



Female. — Front at narrowest 0.44 of head width (average of fifteen 

 which range from 0.39 to 0.45) ; third joint of antenna two and one- 

 half to three and one-half times length of second. Fore tarsus (pi. 3, 

 fig. 17) broadly flattened but not reduced in size, and lacldng tuft 

 of long bristles. Otherwise save for usual difference in genitalia, like 

 the male. 



Length, 4.0 to 7.5 mm. 



Type.— Male, Cat.No. 3633, U.S.N.M., from Avalon, New Jersey, 

 (Johnson) . 



These notes are based on an examination of the type and a long 

 series of both sexes in the collections of the National Museum, Boston 

 Society of Natural History, Museum of Comparative Zoology of 

 Cambridge, Massachusetts, Massachusetts Agricultural College, 

 Dr. C. W. Johnson, Nathan Banks, Prof. J. S. Hine, and the writer, 

 including specimens from the following localities: New Hampshire; 



