72 
except a dorsal row of spots and the hind edges of the last two 
segments, yellow: last two segments of abdomen sometimes 
almost wholly black: length, 5 to 8 mm. White Mountains, 
New Hampshire, and Agricultural College. Miss. (Trans. Am. 
Ent. Soc, Vol. XVIII. p. 372; December, 1891 : Glytia. Redten- 
bacheria sp., Brauer and Bergenstamm in lift.) flava Town. 
Genus EUTRIXA, new genus. 
The principal characters of this genus have been given in the table 
of genera on previous pages of this work. The type species is black, 
the lower part of the front, face, antenme. base of arista, cheeks, pro- 
boscis, palpi, femora, and tibia', yellowish; apex of antenme and the 
proboscis sometimes brown; three postsutural and two sternopleural 
macrochaetae; apex of antenna' less than the length of the second 
antenna] joint from the point where the facial ridges approach each 
other the most closely: length, (J to 8 mm. Franconia, X. II.: Maty- 
land, and District of Columbia. (List of Dipterous Insects. Part IV, 
]>. 753; 1S1!>: Tachina. Clytiomyia exile Coquillett, Journal X. V. Ent. 
Soc, Vol. III. p. 53; June, 181)5.) masuria Walk. 
Genus XANTHOMELANA v. d. W. 
Xanthome! ana van der Wulp, Tijd. voor Entomologie, Vol. XXXV, ]». 188; 1892. 
Xanthomelanodes Townsend, Canadian Entomologist, Vol. XXV, ]>.l(i7: .Inly. 1893. 
The latter name was proposed for Xanthomelana under the mistaken 
idea that this inline is preoccupied by Xanthomelon : but the two terms 
do not conflict with each other. Our two species have three post- 
sutural macrochaetae, scutellum bearing two marginal pairs; wings on 
costal half or less brown, the remainder hyaline or subhyaline: 
1. Oral margin bearing black macrochaetae in addition to the vibrissa 1 , 
legs black, bases of femora yellow 2. 
Oral margin destitute of black macrochaetae besides the vibrissa 1 , 
legs yellow, apices of tibia- and the tarsi black; black, the 
antenme, lace, cheeks, palpi, abdomen except a spot on each 
side of tirst segment at its base and a triangular dorsal spot on 
posterior part of second and third segments, coxae, femora, and 
tibia' except the apices, yellow; abdomen shining, the fourth 
segment and sometimes the base of the third thinly yellowish 
pollinose: wings hyaline, the costal margin to slightly below t\\e, 
third vein smoky brown; posterior calypteres yellow, the bases 
white: length, 7 mm. Ilorseneck Beach, Mass. A specimen of 
each sex collected August 1, 1896, by Dr. Garry deN. Hough. 
Type No. 3568, U. S. National .Museum flavipes n. sp. 
