BRITISH ICHNEUMONS. IQI 



quadrate, broader in ^ and occasionally incomplete apically ; costulae 

 entire ; apophyses small or sub obsolete. Scutellum, and in ^ often 

 post-scutellum, flavous. Abdomen fulvous, rarely flavidous with the inter- 

 mediate segments ferrugineous or black ; the last three sometimes, or the 

 abdomen rarely entirely, black ; post-petiole finely aciculate ; gastrocaeli 

 small and superficial ; ($ with second to fourth ventral segments plicate, 

 and the ultimate elongate, laterally sinuate. Legs normal, red or flavidous ; 

 coxae, trochanters partly or wholly, and the apices of the 5 posterior tibiae, 

 black ; femora externally closely punctate. Wings a little clouded, stigma 

 and tegulae fulvous or ferrugineous, latter often flavous in (J. Length, 

 12-16 mm. 



The apophyses of this species, like those of the last, are often very small 

 or sub-obsolete ; the post-petiole also is pale, but not sub-rugose ; all the 

 femora are fulvous and the conformation of the mandibles is distinctive. 



The $ vaviety com mu fa/us, Berth. (A. aniennatorius^ var. i, Wesm. 1854), 

 has the frontal orbits, central flagellar joints, pronotum, lines at radix, 

 scutellum, post-scutellum, marks on co.xae and tegulae, as well as the 

 second to fourth segments for the most part, flavous ; the sixth, seventh 

 and apex of the fifth segments are fulvous. The $ var. fiaviceps has the 

 coxae and trochanters entirely flavous and is larger than the typical form. 



This species does not appear to have been recorded from Britain since 

 Stephens found it, rarely, near Hertford, and at Ripley, in June, and bred 

 it from Trachea piniperda ; it seems to be attached to pine woods, since it 

 has been bred from the above host on the Continent, where it is very 

 widely distributed and the female hibernates ; Gravenhorst found it be- 

 neath bark of decaying Finns sy/vestris, in the middle of October, and also 

 " in Pino abiete " ; Panzer, too, took it in w'oods. 



7. atratorius, Fab. 



Ichneumon atratorius. Fab. E. S. ii. 134 ; Piez. 56 ; Trentep. Isis, 1826, p. 76 ; Gr. 

 I. E. iii. 891, 9. Amhlyteles atratorius, Wesm. Bui. Ac. Brux. 1S54, p. 89, 9 ; Mem. 

 couron. Ac. Belg. 1859, p. 53 ; Thoms. O. E. xix. 2096 ; Berth. Ann. .Soc. Fr. 1895, 

 p. 624, <J 9 . /. viriUatorius, (ir. Mem. Ac. So. Torin, 1820, p. 324 ; I. E. i. 42S, i 9 ; 

 Sle. 111. M. vii. 184. A. viridatorius, Wesm. Bui. Ac. Brux. 1848, p. 295, .i. A. 

 vtediatorius, Thoms. Ann. Soc. Fr. 1888, p. 114, (5 9 (.nee Panz. ). A. natatorius, 

 Holmgr. Ichn. Suec. ii. 245 (part.). 



Head truncate posteriorly and somewhat narrowed behind the eyes, 

 black ; of $ sometimes with the internal orbits pale ; ^ with palpi, man- 

 dibles, clypeus, face and frontal orbits, flavous. Antennae slender, black ; 

 of $ white-banded with the twelfth flagellar joint (juadrate, of 1$ with 

 scape flavous beneath. Thorax black, of ^ with pronotum, lines before 

 and beneath the radix, flavous ; areola quadrate, costulae entire ; apo- 

 physes small, acute, larger in ^. Scutellum of ? white, of S flavous. 

 Abdomen elongate, black with the third segment pale-banded or bi- 

 maculated at the base in both sexes ; the fourth to seventh of ? usually 

 margined with glaucous-white ; post-petiole aciculate ; gastrocaeli small, 

 of $ sub-obsolete ; ventral segments two to four of ^ plicate, the ultimate 

 apically acuminate. Ixgs slender, fulvous ; coxae, trochanters and pos- 

 terior tarsi black ; ^ with anterior coxae and sometimes the base of the 

 hind tibiae flavous. Wings sub-hyaline, stigma red ; tegulae of ^ flavous. 

 Length, 16-18 mm. 



