BRITISH ICHNEUMONS. 59 



five-jointed pale flagellar band, the face not entirely pale and the temples 

 and scutellum black. 



I do not venture to synonymize this species with Ichneumon infidus^ 

 Wesm., as Berthoumieu has seen fit to do, mainly because Thomson 

 himself points out that the latter is a form of /. annula/or, Fab. Holm- 

 gren included it under /. Jiigriiarhis, however, indicating /. atmu/afor, 

 var. I, Wesm. Tent., $, as synonymous; and Thomson tells us his species 

 is probably also referable to Wesmael's male, which differed from that of 

 /. nii^ritarius in its much paler pubescence and laterally white clypeus. 



Mr. W. Evans sent me for examination two males on one pin which 

 appear to be referable to this species, taken at Forest Mill, in Clackman- 

 nanshire, on 2ist May, 1901 {cf. Ann. Scot. Nat. Hist. 1902, p. 57). 



8. dissimilis, Grav. 



Ichneumon dissimilis, Gr. I. E. i. 190; Ste. 111. M. vii. 144, excl. $ ; Wesm. Mi^m. 

 coiiron. Ac. Belg. 1S59, p. 21, ? ; Holnigr. Ent. Tidskr, 1880, p. 86 ; Berth. Ann. Soc. 

 Fr. 1895, p. 273, (5 ? . /. ze/>/iyrns,'\Nt?,m. Bui. Ac. Brux. 1857, p. 389, $ . I. jocularis, 

 Wesm. lib. cit. 184S, p. 164 ; Holmgr. Ichn. Suec. i. 206, ? . /. piinciifrons. Holmgr. 

 lib. cit. 141, i. Cratichneumon dissimilis, Thorns. O. E. xviii. 1950, 6 9. 



9 . Head with face centrally protuberant ; angles of clypeus rufescent ; 

 a line at the frontal and a dot at the vertical orbits, and sometimes on the 

 cheeks, whitish testaceous. Antennae stout, white-ringed, not attenuate 

 apically ; fourth joint quadrate ; scape rufescent beneath. Pronotum and 

 callosity at radix red ; metathoracic spiracles minute ; areola semi-elliptic 

 and nitidulous, basally rounded. Apex of scutellum castaneous or whitish. 

 Abdomen sometimes with all the segments red- margined, the apical 

 narrowly pale ; post-petiole extremely finely aciculate, almost glabrous ; 

 gastrocaeli wanting ; thyridii somewhat impressed, transverse-linear ; tere- 

 bra as long as segments five to seven. Femora and tibiae red, the hind 

 ones with no white markings, apically black ; hind coxae without scopulae ; 

 hind tibiae finely ridged internally. Wings a little clouded ; stigma 

 flavous ; tegulae red. 



(?. Finely punctate, rather nitidulous. Head black; vertex deeply 

 emarginate ; mouth, clypeus, face, genal, and always a mark at the vertical, 

 orbits, stramineous. Antennae elongate, black with whitish band on 

 joints 14 and 15 only; scape sometimes with a testaceous mark beneath. 

 Thorax narrower than the head ; the pronotum, a dot before the radix and 

 often the apex of the scutellum, flavidous ; areola somewhat semi-circular, 

 not longer than broad. Abdomen linear-cylindrical, black with second 

 segment apically red ; petiole very elongate ; post-petiole conxex, quadrate, 

 glabrous and shining ; gastrocaeli very small. Legs long and very slender ; 

 femora and tibiae red, the hind ones darker towards the apex ; anterior 

 tibiae fulvous laterally in front, their coxae whitish ; hind tarsi with the 

 joints basally testaceous. Wings somewhat ample, hyaline ; stigma piceous ; 

 tegulae and radix white ; areolet sub-deltoid ; radius a little inflexed at the 

 apex. Length, 6-10 mm. 



The S is smaller and more slender than that of C. fabricator. Thomson 

 says the 9 niay be known by its convex frons, dark red orbits, unicolorous 

 tibiae, entirely pale flavous face and whitish scutellum ; the $ by the dense 

 and very fine punctuation of its abdomen, and by the transverse thyridii, 

 which are hardly narrower than the intervening space. 



