DIPTERA. — BERIDE. 533 
(Entomol. Beitrage, vol. i. tab. 8. fig. 8.), his figure agreeing with the 
above description. 
The larva of Clitellaria Ephippium has been discovered by M. Van 
Roser of Stuttgart in a rotten nut tree; and this gentleman observed 
that, although more than half grown when found, it was two years 
in arriving at the perfect state. My fig.127. 8. was made from the 
specimens contained in the collection of this gentleman during my 
visit to Germany last year. 
The larve (fig. 127. 10.) of the genus Sargus are also of an oval 
oblong form, with the anterior segments narrowed; the head scaly, 
narrow, with two small ocelli at the sides, and armed with two hooks ; 
the body has also a number of small hairs scattered over it; and the 
last segment is larger and semicircular, but narrower than the preced- 
ing segment. 
The pupa is formed within the old skin of the larva, which does 
not essentially differ from its previous form. The perfect insect 
makes its escape by bursting off the anterior part of its covering. 
Réaumur (Mém. tom. iv. tab. 13. f. 19, 20., tab. 14. f. 4. 6., and 
tab. 22. f. 5 
which has been named after him, and the larva of which was found 
in cow-dung. Lyonnet (Mém. Posth. tab.17. fig. 21—24. 29.) and 
Bouché (Naturgesch. tab. 4. f.31—36.) have figured the transform- 
ations of S. cuprarius, but neither of these authors have figured the 

8.) has given the transformations of one of the species, 
true pupa. This I am fortunately able to supply, having found many 
of the larve of S. cuprarius in garden mould. It is represented in 
my jig: 127. 11. 
Amongst the exotic species of this family, some exhibit several 
curious variations in structure. Platyna hastata (Wied. Guinea) has 
the abdomen short, but very broad, being nearly four times as broad 
as the thorax. Ptilocera has the male antennez strongly bipectinated. 
Dicranophora furcifera 7 , figured by Guérin (Icon. R. An. Ins. pl. 98. 
f.12.), has a very long, slender, upright horn arising from the scutel- 
lum, and forked at the tip. 
The fossil insect figured by Curtis (in Hd. N. Phil. Journ. vol. vii. 
1829, pl. 6. f.12.), as apparently allied to Sargus, can have no re- 
lation therewith, the veins of the wings being totally unlike those of 
any Notacanthideous insect. : 

The family Ber1p# (Decatoma p. Latr., Xylophagi p. Meg.) has the 
M M 3 
