Dicolus] BRITISH ICHNEUMONS. 21 



partly piccnus, narrower than and siinilarlv punctate to the head, nearly 

 thrice longer than broad, with the pro-pleurae and -sternum, meso-pleurae 

 and -sternum fulvous ; notauli wanting ; metathorax generically constricted, 

 with no areae but the petiolar basal costa strong. Abdomen nigrescent- 

 piceous with whole of third segment except lateral marks, apical margin 

 of second and base of the fourth centrally, stramineous; longer than head 

 and thorax and apically explanate; basal segment slender and elongate, 

 about four times longer than broad, with antecentral spiracles; post- 

 petiole hardly broader ; second and third segments longer than broad 

 and of equal length; fourth cylindrical and a quarter longer than broad, 

 following transverse; terebra slender, straiglit and hardly exserted. Legs 

 slender and pale fulvous, with anterior coxae and trochanters pale stra- 

 mineous; hind coxae elongate and externally infuscate towards apices; 

 hind femora and tibiae subinfuscate ai)ically, and the latter with a wide 

 notch before the apex. Wings with radix and tegulae stramineous; stigma 

 subinfuscate ; areolet wanting and stigma of normal size ; apical radial 

 abscissa distinctly sinuate and nervellus obsoletely geniculate immediately 

 below its centre. Length, about 5 mm. (Bridg.) or only about 3 mm. 

 (Thoms.). 



"It is impossible to be sure that this is really Forster's species, because 

 his description is so short," says Bridgman in publishing the above 

 account of D. siihtiliventris ; and Schmiedeknecht is inclined to think 

 Bridgman had D. hirtico}-?iis, Strobl, before him at the time, mainly on 

 account of its large size. 



This female was captured at Bickleigh, near Plymouth, in Devon, as 

 late as 21st October, by Bignell. I know the species as indigenous only 

 from a couple of specimens sent me by Atmore, who took them about 

 Kings Lynn in Norfolk during August, 191 1. 



3. insectator, Fdrst. 



Dicolus insectator, Forst. Verb. pr. Rheinl. 1871, p. 97, ? ; Thoms. O.E. xii, 

 1316, cT ? . 



A black species with pale markings, and both costulae and frenal area 

 very distinct ; metathorax entirely testaceous or piceous, and the 9 

 antennae 33-jointed. Length, 3-4.5 mm. 



This species is known at once from all others by its very strong meta- 

 notal costulae, as well as by the somewhat strongly convergent inner 

 orbits, by the slender 9 flagellum with the joints elongate and not elon- 

 gately pilose, and by the discally whitish anus. 



Found about Aix by Forster, near Lund by Thomson and in France by 

 Lethierr}-. It was introduced as British with some hesitancy by Bridg- 

 man (Trans. Knt. Soc. 1886, p. 355), who examined a specimen taken at 

 Penzance by E. D. Marquand in 1SS3 and recorded by the latter in his 

 "Ichneumonidae of the Land's V.ud District" (Trans. Penz. Nat. Hist. 

 Soc. 1884, p. 346) ; IMarquand's collection was in the possession of the 

 late W. A. I.ufTup to the time of his death. I anticipate that this species 

 has hitherto been overlooked on account of its small size; its distribution 

 must be very wide with us — if Bridgman's name be correct — for I possess 

 a couple of males, taken on ist Sej)tember, 1892, by the late Alfred 

 Beaumont at Pitlochry in Perthshire, 



