130 GENUS SITtEX. 



2. XlPHYDRIA CAMELUS. 



Ichneumon camelus, Lin., S. N. ( i, 560, 4 (1758). 



Sirex camelus, Lin., F. Sv., 397. 



Hybonotus camelus, Klug, Mon., 14, pi. i, fs. 4, 5. 



Xiphydria camelus, Ste., 111., vii ; Htg., Blattw., 369; Thorns., 

 Hym. Sc., i, 330 ; Andre, Species, i, 562, 

 pi. xxiv, f. 3 ; Cat., 70.* 



Black ; legs red ; two longish marks on vertex and two smaller and 

 more rounded ones behind, a spot in front of tegulse, and five or six 

 large irregular marks on sides of abdomen, white. Coxse, trochanters, 

 and the apex of tarsi, black. Generally the lower orbits of the eyes are 

 white, but they may be black entirely. Wings hyaline. 



The only $ I have (a very small one) wants the white spots on the 

 head, but otherwise, mutatis mutandis, agrees with the ? . 



Length 7 10 lines. 



Newcastle, South of Scotland (Stephens). 

 Continental distribution : Sweden, Germany, Russia, 

 Holland, France, Switzerland, Tyrol, Italy. 



Genus SIEEX. 



Sirex, Lin., Faun. Sv., p. 396 (1761) ; Klug, Mon., 31. 

 Urocerus, Geof., Ins. Par., ii, p. 264 (1762). 



Antennae 18 25-jointed, setaceous or filiform. Head much dilated 

 behind. Wings with two radial and four cubital cellules. Lanceolate 

 cellule with an oblique cross-nervure. Posterior wings with two middle 

 cellules. Abdomen ending at apex in a serrated spike-like projection. 

 Labial palpi 3-, maxillary 1-jointed. Pronotum transverse in front, 

 with an almost perpendicular slope; prosternum small. Sutures on 

 mesonotum obsolete. 



The head is well developed behind the eyes, which 

 have between them the ocelli. The clypeus is trans- 

 verse, and is iinmoveably united (there being no suture) 

 with the front. Mandibles stout, thick, bluntly toothed . 

 Labium and maxilla small, the former much the larger 

 of the two, and placed in front of the latter. Its apex 

 is membranous, rounded, entire, the apical membranous 

 part narrower than basal ; both are covered with long 

 bristle-like hairs. The apical joint longer than the 

 other two together, and also thicker. At the base the 



