138 
and lower side of the third at its base, the palpi, apex of scutel- 
liim and of the abdomen, yellow : front in female one and one-fifth 
times as wide as either eye, two pairs of orbital bristles, sides 
of faee bristly on the upper two thirds in addition to the row of 
macrochaetae, eheeks slightly wider than the eye height, antennae 
four-fifths as long as the faee, the third joint four times as long as 
the second; arista thickened on the basal three fifths, the penulti- 
mate joint four times as long as wide, nearly twice as long as the 
first joint; thorax gray pollinose, marked with four black vitt;e; 
scutellnm bearing three pairs of long marginal macrocha'ta'; 
abdomen destitute of dorsal macrocha'ta' on the first two seg- 
ments, the third with a marginal row, the fourth covered except 
<m the basal half; middle tibiae each bearing three long macro- 
chaetae <>n t lie outside near its middle, front tarsi slightly dilated ; 
wings hyaline, apical cell nearly as wide as the discal cell, third 
vein bristly nearly halfway to the small crossvein, the others 
bare, bend of fourth vein not appendicnlate, calypteres white; 
length, 11 mm. Beverly, Mass. Two female specimens. Type 
No. 3643, II. S. National Museum oriental™ n. sp. 
Genus MICROPHTHALMA Macq. 
Mierqphthalma Macquart, Dipterea Exotiques, Vol. II, Part III, p. 211 (84); 1843. 
Our species is black, the antenna', face, cheeks, palpi and apex of 
proboscis, yellow; three postsutnral and three sternopleural macro- 
chaetae; length. 12 to 15 mm. Franconia, X. II.; Beverly, Mass.; Dis- 
trict of Columbia: OhW<^ Ml.: Georgia; I'tica, Miss. ; Texas: Onaga, 
Kans., and Kern County, Gal. (Analecta Entomologica, p. 45; 1824: 
Tachina. MUtogramma trifascutta Say. Jour. Acad. Nat. Sciences 
Phila.. Vol. VI, p. 174; 1829. Mioraphthalma nigra Macquart, Dipteres 
Exotiques. Vol. II. Part 111, p. 242 (85); 1843. Tachina trixoides 
Walker, List of Dipt. Insects, Part IV, p. 7(H); 1849. Megapr08opil8 
miehiganensis Townsend, Trans. Amer. Ent. Soc, Vol. XIX, p. Ill; 
May, 1892. Maer onychia trifasciata Say, Braner and Bergenstamm in 
litt. Dcxiosoma sp.. Braner and Bergenstamm in litt.). .disjuncta Wied. 
Genus AMOBIA Desv. 
Amdbia Desvoidy, Essai sur lee Myodaires, p. 96; 1830. 
A/acroni/chia Roudaui, Dipterologia' Italic* Prodroinus, p. 229; 1859. 
Trixoclista Townsend, Trans. Amer. Ent. Soc, Vol. XIX, p. 102; 1892. 
Ammobia Brauer and Bergenstamm, Zweifliigler Kais. Mus. Wien, VI, p. 226; 1893, 
(Xon Billberg, Enumer;itio Insectorum, p. 105; 1820.) 
The synonymy of Amobia and Macronychia has already been given 
by Schiner, 1 and repeated by Brauer and Bergenstamm. 2 Two species 
occur in our fauna; both have only three postsutural macrochgetse: 
Thorax marked with three or five black vittae; abdomen gray polli- 
nose, marked with three rows of black spots; orbital bristles 
1 Fauna Austrica, Vol. I, p. 501 ; 1862. 
2 Zweif. Kais. Mus. AVien, VI, p. 226; 1893. 
