480 
[March 
the first of which in J is dorsally scarce half as long as the second. This su¬ 
ture, however, in some specimens is scarcely distinguishable and in none can 
be seen without difficulty. 
Synerges. Antennae 15-jointed, 9 Id-jointed, or 13-jointed with the last joint 
long. Thorax transversely rugose under the lens before the scutel; scutel ru¬ 
gose. Pleura of thorax scarcely glabrous or polished. Abdominal peduncle 
apparently constricted strongly in the middle, but in reality comiDOsed of two 
parts, the first a short cylinder, the second much larger and in the form of a 
truncate cone, the small end of the cone towards the second abdominal joint. 
Second abdominal joint occupying nearly or quite the whole abdomen, exclu¬ 
sive of the peduncle. 
Hitherto Sijnerges has occurred exclusively in hard, woody galls, 
and the other two genera in the more soft and fleshy ones. The inqui- 
linous genus Aulax^ which is peculiar in having the 2nd and 8 rd 
joints % abdomen subequal, while in 9 the 2 nd joint covers the suc¬ 
ceeding ones, 1 have not yet met with.* 
According to the arrangement proposed above, the genera Oi/nips Lin¬ 
naeus {—Diplolepis GeofTroi and Latreille, = Callaspidia Fitch non Dahlbom). 
Biorhiza Westwood, Philonix Fitch, JDiastrophus Hartig, Rhodites Hartig, Ibalia 
Latreille and Tribalia Walsh, will all of them belong to Cynipidae Pseni- 
des: 8 i/nophrus Hart, and 0. S., Spnerges Hart. 0. S., Amblynotas Hart. 0. S., 
Sarothrus Rheinh. 0. S. and Aalax Hart. 0. S. to Cynipidae Inquilinae: and Fi- 
gites Latr., Onychia (?) Haliday, Callaspidia (?) Dahlbom non Fitch, Allotria{l) 
Westw., Kleidotoma {1) Westw., Fucoila (?) Westw. and AEgilips (?) Haliday to 
Figitidae. Onychia is said to have the scutel “canaliculate,” which seems to be 
peculiar to true Figitidae, and Callaspidia, according to Dahlbom, is closely 
allied to Onychia. (See Brulle Hymcnopt. IV, p. 635.) Allotria is parasitic in 
Aphis. If I have rightly identified Kleidotoma and Eacoila, both are true Figi¬ 
tidae, and both have the wings fringed like a Mymar (Proetotrupidae), and the 
former has them emarginate at tip with the radial area in my species distinctly 
open, and the latter simple at tip with the radial area in my species margin¬ 
ally closed by a coarse brown vein. A species of Eacoila was supposed by West- 
wood to infest the turnip, but several species are asserted by Walker to be pa¬ 
rasitical, (Westw. Introd. II, p. 132,) and in that case Westwood’s species was 
probably parasitical upon some other insect that infested the turnip. For “it 
seems hardly probable,” as Baron Osten Sacken well observes, “that species of 
the same genus should sometimes be true gall-producers and sometimes para¬ 
sites.” {Rroc. Ent. 80 c. Phila. I, p. 49.) Respecting the genus .Mgilips see the 
note on page 477. 
I notice that in Aulax sylvestris 0. S. and probably in other Aulax, the ab¬ 
domen is proportionally as much smaller than the 9 abdomen as it is in the 
genus Cynips. This is not the case in the above-mentioned three inquilinous 
genera.—March 21, 1864. 
