INSECTA. 557 
joint oval, -with short pubescence, seta with short hairs j sixth longitudinal 
vein as in preceding. Sp. D. s^jcctahilis, sp. n. 
Group III. Tiiryptoch^ta (Rond.). 
Antennje, applied to the face, reaching nearly to epistoma, second joint 
with a short and weak horizontal bristle at the end, third joint elongate, seta 
with short pubescence : sixth longitudinal nervure wanting. Sp. D. punctum 
(Meig.) ; D. nigricornis (sp. n.). 
Diastata vagam, Loew, Berl. ent. Zeits. 1864, p. 302 = Z>. ohscurella (Meig.) 
= 2>. costata, var. 6-(Zett.), Europe and North Asia; D. inornata, Loew, 
1. c. p. 364, Posen and Silesia ; jD. spectabilis, Loew, 1. c. p. 365, Posen ; D. 
nigricornis, Loew, 1. c. p. 367 = ? fumipennis (Meig.), Germany. 
New genera : — 
Balioptera, Loew, Berl. ent. Zeits. 1864, p. 347 = Opomyza (Meig.) ex 
parte = Geom?/ 2 <? (Zett.) ex parte. Form very slender; antennae depressed, 
arista pectinate above; tibiae without an erect biistle near the apex above; 
alula not distinct ; second longitudinal nervure unusually long, sixth wanting. 
Sp. Balioptera comhmata (Lin.) ; B. ventista (Meig.) = Op. tremula (Hal.) ; B. 
apicalis (Meig.)= maculata (Ahr,)=Geom. terminalis (Zett.); B. tri- 
punctata (Fall.), B. majuscula, sp. n„ p. 356, from Germany. Opom. lurida, 
Loew, 1. c. p. 98, from Sitka, also belongs to this genus. 
Trichoptera, Lioy, Atti 1st. Ven. 3* ser. tomo ix. p. 1109. Allied to Dro- 
sophila and Trixoseelis (Rond.) ; outer margin of the wings furnished with 
small bristles for two-thirds of its length. The author proposes this name 
for the restricted genus Diastata, the latter being, in his opinion, too near the 
name Astata employ ed elsewhere by Fabricius ! Sp. Diastata adusta (Meig.) 
and claripennis (Macq.). 
Gioenia, Lioy, 1. c. p. 1110 {Opomyza auct. ex parte). Third joint of 
antennae patelliform ; second transverse vein far from the inner margin. Sp. 
Opomyza albimana (Meig.). 
Clep.toneria, Lioy, 1. c. p. 1120. Allied to Gymnopa) body very narrow ; 
top of the forehead, thorax, and extremity of abdomen furnished with bristles ; 
veins not very distinct. Sp. Madiga glabra (Fall.). 
Phytomyzides, 
Loew (Berl. ent. Zeits. 1864, p. 334 et seq.) states that 
Scliiner has erroneously referred his Heteronevra alyina to //. 
pictipes (Zett.), and described the male of one variety of H. albi- 
mana (Meig.), distinguished by Loew, as H. pictipes, and its 
female with a second variety as H. albimana. Loew now pub- 
lishes descriptions of the German species of this genus with their 
synonymy, as shown below : — 
I. Without a bristle towards the apex of the upper surface of the tibiae. 
A. Posterior transverse vein not far from the apex of the wing. 
1. decora (Loew). 
%f,ava (Meig., Zett., Walk., Schin.) = s/7wrcrj (Hal.). 
B. Posterior transverse vein far from the apex of the wing. 
8. nigrimana (sp. n.). 
