556 
ZOOLOGICAL LITERATURE. 
O^cinis pusilla (Meig.) was developed. He considers it doubtful whether the 
Oic/wis-larva was the destroyer of the egg. Verh. zool.-bot. Ges. in Wien, 
Bd. xiv. p. 695. 
New genera : — 
Macrothoraxy Lioy, Atti 1st. Ven. 3“ ser. tom. ix. p. 1121. Allied to 
Siphonella ; forehead smooth ; scutellum large, hemispherical, margined with 
small bristles, and with two elongated bristles in the middle. Sp. Siphonella 
rttficomis (Macq.). 
Cotilea^ Lioy, 1. o. p. 1123. Allied to Chloropi j forehead with its anterior 
margin advanced, with a deep furrow j arista of two distinct joints. Sp. 
Chlorops gracilis (Meig. ). 
Anthohia, Lioy, 1. c. p. 1124. AUied to Chlorops ; submarginal vein usually 
arcuate, not produced to the external margin; transverse veins closely approxi- 
mate. Sp. Chlorops lateralis (Macq.) and C. tarsata (Meig.). 
B tanohia, Lioy, /. c. 1125. Allied to Oscinis] marginal vein arcuate. Sp. 
B. chhropsoides, Lioy, and Oscinis duhia (Macq.). 
Tncimhaf Lioy, 1. c. p. 1125. Allied to preceding; thorax with three fur- 
rows. Sp. Oscinis lineella (Fall.) and Chlorops cincta (Meig.). 
Cryptoneura, Lioy, l.c. p. 1125. Allied to preceding; interno-median and 
externo-median veins not very distinct. Sp. Ch'orops Jlavitarsis (Meig.). 
Oscinisoma, Lioy, 1. c. p. 1125. Allied to preceding; interno-median vein 
not produced quite to the margin of the wing. Sp. Chlorops vitripennis and 
vindicata (Meig.). 
Oscinimorpha, Lioy, 1. c. p. 1126. Allied to preceding; second transverse 
vein very oblique. Sp. Oscinis ohliqua (Macq.). 
Macrostyla, Lioy, /. c. p. 1126. Allied to preceding; arista long, plumose ; 
scutellum convex, punctate. Sp. Chlorops plumigera (Meig.). 
Geomyzides. 
Loew (Berl. ent. Zeits. 1864, p. 357 et seq.) indicates that 
the genus Diastata (Meig.), when freed from certain species, such 
as D. luctuosa, obscurella, &c., which do not properly belong to 
it, may be divided into three groups, which will hereafter con- 
stitute so many genera. One of them has already been separated 
by Rondani under the name of Thryptochceta, These groups 
are best characterized by the structure of the antennae, but the 
clothing of the forehead and the venation of the wings furnish 
additional characters. 
Group. I. Diastata, sensu stricto. 
Antennae nutant, second joint with a strong bristle at its end, third oval, 
with long pubescence, seta with long hairs ; sixth longitudinal vein pre- 
sent, but abbreviated. Sp. D. nehidosa (Fall. ) = orna^a (Meig.); J). unipunc- 
tata (Zett.) ; D. vagans (Loew) ; D. costaia (Meig.) —fuscula (Fall.) ; D. in- 
ornata, sp. n. 
Group II. Euthych^ta (Loew). 
Antennae nutant, second joint with no horizontal bristle at the end, third 
