of certain Hymenopterous Insects. 
411 
linea interriipta alba; scutelli 
lineola vel punctis duobus albi- 
dis ; calcaribiis tarsisque pal- 
lidis, his apice nigrescentibus. 
Femina. 
Long. Corp. 5 — 6 mill. 
Expans. alarum 8 — 10 mill. 
Mas, similis at minor, an- 
tennis apice acutis, 13-articu- 
latis. 
Long. Corp. 4 — 5 mill. 
Expans. alarum 7 mill. 
Habitat in Insulis lonicis 
(Corcyra et Leucadia) rubis 
exsiccatis. Imagines mense 
Julio maturate. 
In Mus. nostro. 
From one of the pupa-cases, in noAvise differing from 
the others, the following parasite was obtained. 
Homalus nanus, n. sp. 
Aureo-violaceus, elongatulus ; capite thorace, abdo- 
mineque, latitudine fere cofequalibus, punctatissimis ; an- 
tennis nigricantibus ; meso-metathoraceque viridescen- 
tibus, macula centrali fulgente-aurea ; abdominis disco 
subobscuro, basi, apice, lateribusque viridi-cupreis ; femo- 
ribus, tibiisque anterioribus viridi-violaceis ; posticis, tar- 
sisque omnibus, brunneis. 
Long. Corp. 4 mill. ; expans. alar. 5 mill. 
Exemplar unicum. In Mus. nostro. 
Latreille, in his Genera Crustaceorum et Insectorum 
(tom. iv. p. 77, 1809), describes the genus Nitela as 
having the habitus of a Tachybulus (which he afterwards 
identifies with the genus Pison of Spinola, in his Ad- 
denda, p. 387), and the wings of a Trypoxylon, the mar- 
ginal cell being however somewhat appendiculated in 
Nitela. 
In the present genus the venation of the wings ap- 
proximates to that of Pison, the second submarginal cell 
being strongly petiolated and receiving both recurrents, 
the first of these near the base, and the second rather 
beyond the middle of the cell ; but, as Shuckard has 
pointed out in Pison (Trans. Ent. Soc. Lond. vol. ii. 
