5. sirex. 375 



7. Sirex feist hamelii. 



Urocerus feisthamelii, Brulle, Exped. Scient. cle Moree, iii. (1) pt. 2, 

 p. 387, pi. Hi. fig. 8 (1832). 



Hab. Greece. 



8. Sirex stephensii. 



(Plate XVI. fig. 6.) 



Sirex magus, p., Steph. (nee auct. al.) III. Brit. Ent., Mand. vii. 

 p. 116 (1835). 



Exp. al. 1 poll. 11 lin., long. corp. 1 poll. 6 lin. 



Head and thorax blue-black, strongly punctured, a large pale yel- 

 low spot behind the eyes ; first three joints of antennae blue-black, the 

 fourth blackish on the inside, the remainder pale yellow. Abdomen 

 black, smooth, the incisions chestnut, and marked with a row of 

 pale triangular spots on the sides and on the middle beneath ; seg- 

 ment 8 nearly twice as long as the preceding, and marked with a 

 long kidney-shaped spot on the sides. Legs black, with the basal 

 half of all the tibiae and of the first joint of the tarsi pale yellowish. 

 Wings smoky yellowish hyaline, with chestnut nervures ; costa and 

 stigma blue-black. 



Hab. England (probably introduced)*. 



a. 2 • (Type.) Near London. J. F. Stephens. 



9. Sirex (?) dubia. 



Sirex nigricornis, Acerbi (nee Fabr.), Travels through Sweden, ii. 

 p. 253, pi. i. fig. 1 (1802). 



Hab. Lapland. 



10. Sirex spectrum. 



Ichneumon spectrum, Linn. Syst. Nat. i. p. 560, n. 2 (1758). 



Sirex spectrum, Linn. Faun. Suee. p. 396 (1761) ; Klug, Mon. Sir. 



Germ. p. 39, pi. iv. figs. 5, 6, pi. v/fig. 1 (1803). 

 <$ . Sirex emarginatus, Fabr. Ent. Syst. ii. p. 128, n. 15 (1793). 



Hab. Europe ; North Asia ; North Africa. 

 a : b. 5 . Munich. H. Buchecker. 



c, d. $ 2 ■ Transbaikal. 



e-g. tf. Algeria. 



11. Sirex cedrorum. 



(Plate XV. figs. 2 rf , 3 $ .) 

 Sirex cedrorum, Smith, Ann. Nat. Hist. (3) vi. p. 256 (1860). 

 Exp. al. 1 poll. 3 lin. ad 1 poll. 10 lin., long. corp. 1 poll, ad 

 1 poll. 3 lin. 



* This species so closely resembles a Tremex in shape, and is so similar to 

 the descriptions of T. magus, that it is not surprising that Stephens should have 

 confounded it with that species, apparently eking out his own description by 

 those of other writers. In T. magus, however, the stigma and the last joint of 

 the tarsi are yellow. 



