BRITISH ICHNEUMONS. 125 



what transverse; post-scutellum also white throughout in ^. Abdomen, 

 oblong-oval in ? , elongate-elliptical in ^ ; black, $ with segments two 

 and three dull, sometimes more or less badious or dull red, five or six 

 to seven flavous-marked, i$ segments two and three flavidous, second 

 more or less black-marked, third basally black and sub-quadrate; post- 

 petiole strongly aciculate, gastrocaeli normal, deeply impressed, the 

 intervening space somewhat rugose. Legs black ; $ tibiae centrally 

 stramineous-white, femora incrassate, scopulae large and piceous ; (?, ex- 

 cepting coxae, trochanters, hind femora, and apices of hind tibiae, fulvous ; 

 tarsi often more or less fuscous. Wings with stigma fulvous ; $ somewhat 

 clouded, areolet pentagonal ; S flavescent, tegulae flavous, areolet sub- 

 deltoid. Length, 13-16 mm. 



This species may be known in $ by the distinct coxal tufts, the whitish 

 scutellum, anal markings, and posterior tibial band. It varies in having 

 segments two and three dorsally black, castaneous, or entirely red, but the 

 colour of the posterior tibiae and tarsi will easily distinguish it from /. con- 

 fusorins. The $, may be known by the long thoracic pubescence, its 

 somewhat short scutellum and white post-scutellum. In /. zonalis, 

 Wesm., both the second and third segments are entirely red, divided by 

 a black band, but this colour is usually dull and rarely clear as in /. co7i- 

 fusorius, $ . 



From I. cnissifemur, Thorns., with which it has been confused, it may 

 be distinguished, in the ? , by the stouter antennae, of which the flagellum 

 is more attenuate apically and the joints are longer, the second flagellar 

 joints being distinctly longer than broad; c^ ? by the shorter scutellum, 

 and the thinner hind femora which are externally closely punctate through- 

 out, and not longitudinally impressed; in the $, by the callosities beneath 

 the wing, the more strongly and coarsely punctured mesonotum and 

 cheeks, and the slightly broader abdomen. 



Stephens thought the ? was not common about London, in June, and 

 the $ rarer, in July; he also records it from Yorkshire; Eignell took it at 

 Bickleigh, near Plymouth, on September 2nd ; and it is recorded from 

 Norfolk by Paget. It has been bred on the Continent, where it is generally 

 distributed from Noctiia bnin/iea and Trachea piniperda. The 9 hibernates 

 in moss, and I have taken it beneath the bark of a rotten tree-stump, at 

 Foxhall ; beneath a felled pine, at Sprcughton, in February ; and swept it 

 from herbage as late as November loth, in Bentley Woods, near Ipswich. 

 ISIr. Bradley has taken it at Sutton, near Birmingham, in the middle of 

 June, as well as in September ; and I believe Mr. Haggart has found it 

 beneath bark, during the winter, at Galashiels ; it is also recorded from 

 Essex, and Mr. Bedwell has taken it, in October, in the New Forest. 



14. crassifemur, Thorns. 



Ichneumon crassifemur, Thorns. Ann. Soc. Fr. 1886, p. iS ; O. E. xviii. 1917; Berth. 

 Ann. Soc. Fr. 1894, p. 639, i 9 . 



Extremely closely allied to the last-described species, but the shape of 

 the scutellum is very distinctive. Scutellum whilish-flavous, not trans- 

 verse, flat ; second segment evidently broader at ai)ex than at base, the 

 thyridii oblique and gastrocaeli rugose ; second and third rarely partly 



