MUSCIDJC. 
425 
Ulidiides. 
Myiodella, g. n., Rondani, Ann* Mus. Grenov. iv. p. 290, woodcut. Differs 
from Myiodina (details figured) in structure of antennas and wings. M. 
brachialiSj sp. n., id. ibid., Keren. 
Ulidia melampodia, sp. n., Loew, Eur. Dipt. iii. p. 287, Sarawschan. 
Empyelocera abstersa, sp. n., id. I. c. p. 289, Sarawschan. 
Sapromyzides. 
Lonchcea sylvatica, Beling, Verh. z.-b. Wien, xxiii. p. 549 (all stages), 
Harz ; L. incequalis, Loew, B. E. Z. xvii. p. 50, Hungary, splendida^ id. 
Eur. Dipt. iii. p. 292, Sicily : spp. nn. 
Palloptera Icetabilis, p. 293, Reichenhall, costalis, p. 295, Silesia, Ba- 
varia, pallens, p. 296, Kultuk (? = ephippium, Zett.), Loew, Eur. Dipt. iii. 
spp. nn. 
Sapromyza tetrachceta, id. B. E. Z. xvii. p. 50, Eur, Dipt. iii. p. 297, 
Hungary ; S. dedecor, p. 298, ? Austria, adumbrata, p. 299, Spain, pceci- 
loptera, p. 300, Langenau, Altvater, Galizia, id. Eur. Dipt. iii. : spp. nn. 
Tryjpetides. 
H. Loew, Sm. misc. Coll. No. 256, pp. 211-344, pis. x. & xi., supple- 
ments his paper on this group, published in 1860, by a " Review of the 
North American Trypetina.'" Various observations are made on the 
afi&nities of species and genera, and some synonymy is given. New 
genera are proposed and named in such a manner as to lead to the con- 
viction that the author himself only became aware of their real or sup- 
posed value when describing the species on which they are founded, and 
the old generic names of which he has indeed left standing in many cases. 
In the tables, these new genera are referred to as " smaller genera," — a 
new scheme of grouping, probably intended to represent sub-genera. A 
comparison is made between the European and American species ; with a 
critical examination of all the N. American species described by other 
authors, some of the descriptions of which are reproduced. Varieties of 
Trypeta longipennis, Wied., are described and named perfecta, typica, 
longitudinalis, vittigera, intermedia, confluens, and arculata, and T. corni- 
gera and cornifera^ Walk., are referred to it. TepJiritis segregata, 
Frauenf., = Trypeta angustipennis, Lw. 
The following new genera and species are characterized : — 
Acrotoxa, p. 227. Resembles Hexachceta : 4th longitudinal vein curved 
forwards towards its end, reaching the margin at a very acute angle. 
Trypeta suspensa, Jjw., fraterculus and serpentina, Wied., obliqua, Mcq., 
&c., and ludens, p. 223, pi. xi. fig. 19, Mexico, and tricincta, p. 225, Hayti. 
Epochra, p. 238. Allied to Acidia, but differing in the ovipositor and 
venation. Type [described 3 pages before as a Trypeta !] canadensis, 
p. 235, Canada. 
Acrotoinia, p. 274. Trypeta latipennis, Wied., and [a new species 
described at p. 272 as a Trypeta !] testudinea, fig. 13, Cuba. 
Eutreta, p. 276. Trypeta sparsa, Wied., and rotundipennis, Lw. 
Acidogona, p. 285: incidentally mentioned at the end of description 
