386 CLASS VIII. 
Comp. on this family: F. Kiva, Monographia Siricum Germania, Tab. 
zn. Berolini, 1803, 4to, and (on the following also) the excellent work of 
Tu. Hartic, Die Familien der Blattwespen und Holzwespen. Mit Abbild. 
Berlin, 1837, 8vo. 
Phalanx I. Oryssides. Borer capillary, incurved at base, con- 
cealed. Radial cell one, cubital cells two. 
Oryssus LatR. Antenne short, with ten to twelve joints, in- 
serted near the mouth. Maxillary palps long, five-jointed, labial 
triarticulate. Anterior tarsi of females with three joints only. 
Sp. Oryssus coronatus Fapr., Panzer, Deutschl. Ins. Heft 52, Tab. 19 
(Strex vespertilio), DuMER. Cons. gén. s. l. Ins. Pl. 35, fig. 4; in Germany, 
France, &e. 
Phalanx II. Uroceride. Borer straight, exsert. Radial cells 
two, cubital four. Antenne with eighteen to twenty-five joints. 
a) With maxillary palps long, 6- or 5-jointed. 
Cephus Latr., FABr. Antenne incrassated towards the apex. 
Abdomen compressed. 
Sp. Cephus spinipes, Banchus spinipes PANzER, Deutschl. Ins. Heft 73, Tab, 
17, &c. 
(Species small, This genus is placed in the following family by La- 
TREILLE and WESTWOOD). 
NXiphydria Latr., Fase. Antenne attenuated towards the apex, 
setaceous. 
Sp. Xiphydria camelus, Sirexw camelus L., DuméRIn, Cons. gén. s. l. Ins. 
Pl. 36, fig. 2, Harrie 1. 1. Tab. vii. fig. 9, &e. 
b) With maxillary palps extremely short, with only one or two joints. 
Strex L. (exclusive of species). Urocerus Georrr. Antenne 
setaceous or filiform, long. Maxille united at the base. 
Sp. Strex gigas L., Ichneumon gigas, Syst. nat. Eid. x. fem. (Strex mariscus 
L. ma.), Rasex, Ins. Bomb. et Vesp. Tab. vit. 1X., DUMERIL, Cons. gén. s. 
l. Ins. Pl. 36, fig. 1, Ratzepure, Forst-Ins. 11. Tab. Iv. fig. 2F; head 
black, with a large yellow spot on each side behind the eyes; the male 
with stone-coloured abdomen, the last two rings black; the female has the 
abdomen at the base and apex yellow, in the middle dull black. This 
insect is the largest native hymenopterum ; the expanded wings measure 
2in. 2lin., the body rin. 2lin., and the borer 4 lin.; but much smaller 
specimens of the species are met with. The larva lives more than a year 
in the wood before it changes into a nymph ; in summer the insect comes 
to view from the pupa after three weeks, but when the larva becomes 
a pupa towards winter, it continues thus throughout the winter. 
