BRITISH ICHNEUMONS. ']'] 



more rounded behind the eyes, the gastrocaeh flatter and less distinct, the 

 hind femora are often apically black, and the ? coxae are simple, not 

 scopuliferous. From M dumeticola, it differs in the hind tibiae not being 

 basaliy white, the body more nitidulous, more coarsely punctate, and less 

 densely pilose. 



It is undoubtedly the present species and not the true / albosii^na/i/s 

 which was recorded in Marshall's 1870 catalogue and probably also by 

 Stephens from the North of England and Scotland ; more recently it has 

 been regarded as a variety of Barichneutnofi gemellus, from which it is 

 abundantly distinct. Mr. Luff has found it in Alderney, and Mr. Bignell 

 has confirmed its claim to inclusion in our list by the capture of 1. albosig- 

 naius, Holmgr. {tiec Grav.) at Bickleigh, in Devon, upon 5th August, 1884. 

 On the Continent it is recorded from Germany, France, Spain and Italy, 

 but has not yet been bred. 



4. bimaculatorius, Fanz. 



Ichneumon bimacidatoritis, Panz. F. G. Ixxx. 8, i ; Wesm. Nouv. M(5m. Ac. Brux. 

 1844, p. 65 ; Holmgr. Ichn. Suec. i. 137 ; Thoms. Ann. Soc. Fr. 1888, p. 106 ; Berth. 

 lib. cit. 1S95, p. 227, (J ? . Melanichneiiinou biinaciilatoriiis, Thoms. O. E. xviii. 1956. 

 /. saliiratorius, varr. I et 4, Gr. I. E. i. 238, excl. maribus segmento 6'° toto nigro. 



Head not narrowed behind the eyes, black ; that of S with palpi and 

 mandibles mostly red. Antennae of ? stout and filiform throughout ; 

 white-banded in both sexes ; $ with flagellar joints well discreted, seta- 

 ceous, rufescent beneath. Thorax entirely black ; epicnemiae not extending 

 to callosity at radix ; the metathorax distinctly lower than the mesonotum, 

 with complete upper areae of which the areola is sub-hexagonal in ? , and 

 semi-oval, apically emarginate, in $ . Scutellum white. Abdomen black, 

 with segments six and seven white-marked in both sexes ; $ lanceolate- 

 oval, 6 sub-linear ; petiole long and narrow, its sides not transversely 

 costate ; post-petiole not broad, quite smooth, strongly nitidulous, its 

 lateral areae, which are only half the width of the central, punctate ; gas- 

 trocaeli wanting, indicated by a slight sulcus ; thyridii punctiform, very 

 remote from the base of the second segment, which is alutaceo-punctate ; 

 terebra a little exserted. Legs black ; trochanters mainly white, anterior 

 tibiae (paler in S ) entirely, and hind ones basaliy, reddish ; calcaria white ; 

 tarsi fuscous, front ones reddish ; hind coxae not scopuliferous. Stigma 

 testaceous ; tegulae piceous ; S with areolet strongly narrowed above, and 

 the radial cell trapeziform. Length, 8-10 mm. 



Both sexes may be known by the white antennal band, scutellum and 

 anus, by the sculpture of the second segment and by the punctiform 

 thyridii. It is of the same size as M. dumeticola, which, however, has the 

 post-petiole centrally punctate. 



It differs from M. saturatorius : the $ in having black genital valvulae ; 

 $ antennae thicker, terebra rather longer, (S:c. 



Bridgman took a female of this handsome little Ichneumon at Brundall, 

 near Norwich, on September 17th, 1884 ; and I have taken it in Covehithe 

 Broad, in Suffolk, by sweeping reeds, on October ist ; and others upon 

 Angelica flowers and Scutellaria, at Matley Bog, in the New Forest, in 

 August. I should expect that it is a fen species. It is distributed through- 

 out Europe, and the female hibernates in moss. 



