DIPTERA. — MUSCIDZ. 145 
S. g. Limosina Meq. Borborus p. Meig. 22 sp. B. sylvaticus Meig. 
Arista jointed at the base ; second transverse nerve perpendicular. 
S. g. Heteroptera Mcq. TBorborus p. Meig. 1 sp. C. pusilla Fall. 
Arista jointed at the base; second transyerse nervure oblique. 
C. HeEtomyzipes. 
HELOMYZA Fallen. Sumiuap. Rk. D. 18 sp. H. rufa Fall. Curt. 545. 
Wings with the anterior margin ciliated; epistome and fore femora thick and 
hairy ; antennz with the third joint oval ; style villose. 
S.g. Blephariptera Meq. MWHelomyza p. Curt. sp. ? M. serrata L. 
Differs from Helomyza in having the third joint of the antenne orbicular or len- 
ticular, and the style long, naked, or tomentose. 
Obs. Herbina R. D., (sp. H. Suilloidea R. D.), Leria R. D., (M. serrata 
Linn.), and Ccothea* Hal. (4 sp., type Cie. fenestralis and pallescens 
Mcq.), are given by Mr. Haliday as subgenera of Blephariptera. 
HETEROMYZAf Fall. Tuetipa R. D. 3 sp. H. oculata Fall, 
Differs from Blephariptera in having the fore margins of the wings not ciliated ; 
forehead narrowed in 3. 
Obs. Mr. Haliday refers to this genus the subgenera Lentiphora R. D., 
Thelida R. D. (H. oculata), Clusia Hal., (H. flava Meig. nearly allied 
to Heteroneura), and Heteromyza, (type H. occulta Fall.) 
ACTORA Meig. Hencomyza Curt. 2 sp. A. strum Meig. Curt. 66. 
Elongate ; head rather large; palpi large; face naked; forehead very broad, flat, 
obtusely advanced; antennz short, third joint lenticular; legs, except the 
middle tibiz, villose. 
DRYOMYZA Fall. Dryorr R. D. 4sp. M. flaveola Fab. 
Palpi rather large ; face short, concave ; epistome prominent, a kind of hood ex- 
tending over the epistome ; third joint of antennz oval ; style finely villose. 
LUCINA M, Sarticerzra R. D. Isp. L. fasciata Mg. Curt. 621. 
Face naked, vertical ; head broad ; antenna distant, third joint oval ; style naked ; 
abdomen depressed, distinctly 6-jointed; hind legs long; thighs thick, 
spinose. 
SCIOMYZA Meiy. Dyctia R. D. 12sp._ S. simplex Meig. 
Head rather broad; face perpendicular; epistome not prominent, naked; fore- 
head broader than the thorax; antenne distant, third joint oblong, obtuse ;_ ab- 
domen depressed. 
Obs. The subgenera Chetocera R. D. (C. albocostata Mg., §c.), Anticheta 

* CEcothea Hal. “ Antenne articulo tertio orbiculato ; arista gracillima, longa, 
nuda; tibie mediz spinose; ale costa distincté serrata; areola mediastina mi- 
nuta.” ( Hal.) 
+ “ Heteromyza Meigen is an incongruous mass. Some, as oculata, have the spines 
of the costa, though few and minute, still visible towards the lower edge; these, 
therefore, differ not materially from Blephariptera (Leria R. D.). H. oculata forms 
R. D.’s genus Thelida H. furcata may be taken as the true type; it is allied to 
Actora, and, with that genus, seems to come closer to the type of the Sciomyzides. 
H. flava M. has, I think, considerable affinity to Heteroneura, with which I once 
placed it. I have pointed out the principal differences in the Annals of Nat. His- 
tory.” (Haliday’s MSS.) 
L 
