260 THE ENTOMOLOGIST. 
numbers, as might be expected. Mr. Howard Vaughan’s collection 
was very complete. The species commonly met with were 
Eurytoma rose, Nees (very common); Decatoma biguttata, Swed. 
(common) ; Syntomaspis caudatus, Nees (uncommon); Callimome 
regius, Nees(very abundant); Megastigmus dorsalis, Fabr. (not com- 
mon); M. stigmaticans, Fabr. (common); of Ormyrus tubulosus, 
Fonsc., I bredthree females and one male I believe, from these galls, 
but possibly they might have been from those of A. Sieboldii ; 
Eupelmus urozonus, Dalm. (not generally common), expressively 
called “ the little cock-tail” by Mr. Vaughan, figured by Haliday 
(see Entom vi. 226), and by Dalman; Pteromalus fasciiventris, 
Westw. (very common); P. tibialis, Westw. (very abundant) ; 
also another Pteromalid, which is common, but at present 
undetermined. In addition Walker bred Callimome abdominalis, 
Boh., and Decatoma flavicollis, Wik. Dr. Mayr bred three males 
of Diomorus calcaratus, Nees, and two specimens of Hurytoma 
nodularis, Boh., from the old galls inhabited by Stigmus pendulus, 
in whose larvee they are parasitic ; but, of course, from the various 
insects now ascertained to be casual inhabitors of these galls, a 
very fine collection of Chalcidide might be expected. 
Proctotrupes gravidator, Linn.—A fine female of P. gravidator, 
also one of the black species, were bred by Mr. Billups. The 
Proctotrupidé are mostly parasitic on fungivorous Diptera, and 
the probable explanation of their presence in these galls is that 
the imagos found them a convenient hybernaculum. ‘'T'wo plates 
in ‘ Pinacographia’ (pl. 18 and 19) well illustrate this family. 
Megaspilus sp. ?—One specimen belonging to this genus was 
bred by Mr. Billups. Bouché bred a Megaspilus from Syrphus 
pupe, and other species are frequent parasites of Aphides. This 
specimen, doubtless, had a similar origin to the Aphidius, also 
bred by Mr. Billups; but it is impossible to trace it exactly. 
Homalus (Hedychrum) auratus, L.—Mr. Weston again bred 
four specimens of this Chrysid. It must have been reared at the 
expense of one of the Fossores. 
CrABRONID&.-— As said in my former article, it is no uncommon 
thing for Crabronide to make their nests in these galls after they 
have been pierced by the exit of the Cynips (Entom xu. 118). 
Two species were received in Mr. Weston’s first collection ; these 
have been again met with, and three others in addition. Mr. 
Bignell has also bred Crabro clavipes in June, 1879. ‘The species 
