171. 
172. 
173. 
174. 
175. 
176. 
177. 
178. 
179. 
180. 
FAM. EMPIDIDZE 
Ins. Brit. Dipt. Vol. r, p. 102 (1851); Schiner, Fauna Dipt. Austr. 
Vol. 1, p. 116 (1862); Strobl, Mitteil. Naturw. Ver. Steiermark, 
Graz, Vol. 29, p. 92 (1852); ibidem, Vol. 46, p. 71 (1909); Boitard, 
Man. Ent. Vol. 3, p. 321 (1843). 
? ferruginea, Roser, Correspondenzblad Landw. Ver. Würtemb, Stuttgart, 
Volr, p. 53 (1840). 
? melanocephala, Macquart, Mém. Soc. Sc. Lille, 1823, p. 161 [1823] (Empis). 
magica, Mik, Wien. Ent. Zeit, Vol. 6, p. roo (1887) ; Strobl, Verh. Zool.- 
bot. Ges. Wien, Vol. 42, p. 175 (1892). 
H. Tisfii, Strobl, Verh. Zool.-bot. Ges. Wien, Vol. 42, p. 150 (1892); 
Mitteil. Naturw. Ver. Steiermark, Graz, Vol. 29, p. 9o (1892). 
H. transfuga, Walker, List Dipt. Brit. Mus. Vol. 3, p. 491 (1849); 
mom 
Hm 
Coquillett, Proc. Wash. Acad. Sc. Vol. 2, p. 411 (1900); Melander, 
'Trans. Amer. Ent. Soc. Vol. 28, p..270 (1902). 
. tristis, Loew, Berl. Ent. Zeitschr. Vol. 8, p. 82 : Cent. 5, No. 62 
(1864); Coquillett, Proc. U. S. Nat. Mus. Vol. 18, p. 394 (1895); 
Melander, Trans. Amer. Ent. Soc. Vol. 28, p. 267 (1902); Slosson, 
Ent. News. Philad. Vol. 14, p. 286 (1903). 
. triviltata, Loew, Berl. Ent. Zeitschr. Vol. 6, p. 204 : Cent. 3, No. 39 
(1862); Coquillett, Proc. U. S. Nat. Mus, Vol. 18, p. 394 (1895); 
Melander, Trans. Amer. Ent. Soc. Vol. 28, p. 200, 265 (1902); 
Slosson, Ent. News, Philad. Vol. 14, p. 268 [1903] (Aabifs); McAtee, 
Ent. News, Philad. Vol. 20, p. 360 [1909] (Zabits). 
. iyrolensis, Strobl, Verh. Zool.-bot. Ges. Wien, Vol. 42, p. 121 (1892). 
. umbrosa, Loew, Berl. Ent. Zeitschr. Vol. 6, p. 202 : Cent. 3, No. 34 
(1862); Coquillett, Proc. U. S. Nat. Mus. Vol. 18, p. 394 (1895); 
Melander, Trans. Amer. Ent. Soc. Vol. 28, p. 264 et 350 (1902). 
brachystoma, Coquillett, Rept. New Jersey Board Agric. Vol. 29, Suppl. p. 652 
[1899] (Empis) no description; Melander, Trans. Amer. Ent. Soc. 
Vol. 28, p. 350 (1902). 
. uncicauda, Bezzi, Suppl, Ent. Berlin, Vol. 3, p. 72 (1914). 
. unicolor, Loew, Berl. Ent. Zeitschr. Vol. 6, p. 203 : Cent. 3, No. 37 
(1862); Coquillett, Proc. U. S. Nat. Mus. Vol. 18, p. 394 (1895); 
Melander, Trans, Amer. Ent. Soc. Vol. 28, p. 265 (1902). 
. velutina, Loew, Berl. Ent. Zeitschr. Vol. 6, p. 203 : Cent. 3, No. 36 
(1862); Coquillett, Proc. U. S. Nat. Mus. Vol. 18, p. 394 (1895); 
Melander, Trans. Amer. Ent. Soc. Vol. 28, p. 264 (1902). 
. Wheeleri, Melander, Psyche, Vol. 9, p. 214 (1901); Trans. Amer. 
Ent. Soc. Vol. 28, p. 270, f. 95 (1902). 
I6. GENUS PHLEBOCTENA, BEZZI 
C. Europe. 
Boreal America. 
New Hampshire. 
United States. 
C. Europe. 
E. United States. 
Formosa. 
E. United States. 
E. United States. 
Wyoming. 
Phleboctena, Bezzi, Nova Acta Akad. Naturf. Halle, Vol. 9r, p. 3o2, 382 (1909). 
127 
. Characters. — Yellow species, measuring six millimeters, with stout thorax and short abdomen. 
Eyes separated on the front a distance equal to the length of the first antennal joint, two ocellar bristles; 
'antennz elongate, almost bare, third joint long and compressed conical, terminal style two-thirds the 
length of the third joint, distinctly two-jointed, the basal joint quadrate, the long terminal joint tipped 
by a microscopic seta; proboscis thick, vertical, as long as the head; palpi long, thin, porrect and finely 
hairy. Disk of the thorax with very short hairs, notopleural, postalar, single dorsocentral and four 
scutellar bristles long, no strong humerals, pleure bare. 
Genitalia retracted, finely golden-hairy. 
Legs simple, with very short hairs, only the coxe and posterior femora and tibiz bearing short black 
bristles. "Wings long and broad, costa thinned beyond the third vein, basal bristle present, auxiliary 
