348 INSECTA. 
1753. Deep black; thorax satin-red with a spine on each side 
and twvu on the scutellum, On the trunks of old Oaks *. 
Oxycrera, Meigq. 
The Oxycerz resemble the Ephippia in the shortness of their 
antenne, which are also provided with a stilet; but the third joint is 
shorter, and not abruptly narrowed at the end; if we look at the 
profile of the antennz we observe that the stilet, longer and more 
slender than in the preceding subgenus, and approximating more to 
the form of a seta, is not terminal, but inserted on the back near the 
summit. 
O. hypoleon; Strat. hypoleon, Fab.; Panz., Faun. Insect. 
Germ., I, 14. Variegated with black and yellow; scutellum 
yellow, and with two spines f. 
There, the proboscis is long, slender, siphoniform, geniculate at 
base, and lodged in the inferior cavity of a rostrum-like projection 
of the anterior part of the head, bearing the antennz, of which the 
form and proportions are similar to those of the Ephippia. 
Nemoretus, Geoff., Fab. t 
In the others, the fourth joint of the antenna, together with the 
third, forms an ovoid or globular club, terminated by a long seta. 
The scutellum is rarely spinous. 
Curysocuiora, Lat.—Sarevs, Fab., 
Where the third joint of the antennz is conical, and terminated by the 
seta §. 
Sareus, Fab., 
Where the same joint is almost ovoid, or nearly globular, rounded 
or obtuse at the summit, with the seta inserted on the back, near the 
junction of the fourth || ring with the preceding one; the first joint 
is almost cylindrical. 
The scutellum is rarely spinous. The body is frequently elon- 
gated, green or cupreous, and brilliant. 
S. cuprarius ; Musca cupraria, L.; Reaum., Insect., IV, xxii, 
7,8; De Geer, Insect., VI, xii, 14. Golden-green ; abdomen 
cupreous-violet ; legs black, with a white ring; wings long, 
with a brown spot. 
The larva lives in cow-dung ; the body forms an oblong oval, 
narrowed and pointed anteriorly, furnished with a squamous 
head provided with two hooks. The body is interspersed with 
hairs. It becomes a pupa under its own skin, and without any 
material change of form. The perfect Insect issues from its 
* See Latreille, Meigen, and Macquar. 
+ Idem. 
+ Idem. © 
§ Sargus amethystinus, Fab. 
|| The Sargi, whatever Meigen may say to the contrary, have the third joint 
divided into four rings. 
