1868.] 275 
Aulax glecliomce [read glechomatis], Hart., in Germ. Zcits., 3, 
342 ; 4, 412. 
The largest species, distinguished by the thick, globose abdomen, 
and slightly shining mesothorax, the coriaceous appearance of which is 
due to very minute punctures, with glabrous interstices. It forms 
galls from one to three-fourths of an inch in diameter, beset with 
whitish hairs, in the axilla) of the leaves of Oleclioma Tiederaceujn, L., 
the common ground-ivy. These galls are well figured by Eeaum., Ins., 
iii., pi. 42, f 1 — 5 ; and Malpighi, Opera omnia, pi. 9, f. 34. The Lin- 
ncan description of Cynips glecliomce [sic], P. S., 1520 ; Syst. Nat., 2, 
917; and Fab., E. S., 2, 101, " Fiisca, tlwrace villoso," must refer, as 
remarked by Hartig, to a different insect, — probably a Synergiis, — as the 
present species has the thorax totally free from villosity. Aulax gle- 
chomatis, Hart., is not uncommon in England. I possess the inner gall 
and the insect, through the kindness of Mr. P. Inchbald. 
iii. Disc of the mesothorax entirely glabrous and shining. 
Aulax hrevicornis, Curtis ? 
" ? . Black, shining ; abdomen bright ferruginous ; legs bright 
ochreous, tips of tarsi fuscous ; mandibles and antenna) ferruginous, the 
latter brownish towards the apex, not much longer than the head and 
thorax, 13-jointed (?), terminal joint longest. \\ lines. Dover." 
Curtis, B. E., 688, 19 {Cynips hrevicornis). 
The apex of the abdomen is more or less dark above. The antenna) 
are sometimes much darker than " ferruginous," and vary in having 
13 — 14 joints. The mesothoracic sutures are abbreviated in front. 
Mesothorax very black and shining. Radial cell more or less imperfect ; 
in one specimen completely obliterated on the right side only. 
5" . Long. 1 — 11 ; alar. exp. 2\ lin. 
? Gynips hrevicornis, Curt., I. c. 
? Gynips potentillce, Villers. 
? Aylax splendens, Hart., in Germ. Zeits., 2, 196. 
Hartig gives the antenna) as 15- (i. e. 14-) jointed. Notwith- 
standing the apparent disagreement of his and Curtis's diagnoses, I 
cannot but think the insects identical. Five German specimens in 
Mr. "Walker's collection are ticketed A. splendens, in the handwriting 
of Forster, but the determination must be incorrect, as they have not 
the " Mittelbrustriicken vollkommen glatt und glanzend." I consider 
them to be ^. sahaudi, Hart. 
Of unknown habits, but taken occasionally amongst oak trees. 
{To be continued in Vol. V.) 
