ICHNEUMONID^. ICHNEUMON. 207 



tibiis posticis abdominisque apice nigris, annulo antennarum anoque albis. 

 (Long. Corp. 44 lin.; Exp. Alar. 6§ lin.) 



Ic. ruficollis. Steph. Nomen. 2d edit. col. 137. 



Red : head black behind ; palpi reddish ; antennae incurved, black, with about 

 the loth to 13th joints white ; thorax bright red, with a black spot on each 

 side below the wings ; metathorax above, or region of the scutellum black, 

 the declining portion red ; scutellum and a line below also red ; abdomen 

 with the 3 basal segments and the anterior angles of the 4tb, the 5th totally- 

 black, 6th and 7th black, with a large white dorsal spot; ovipositor slightly 

 exserted, black ; legs with the coxae, trochanters, and femora black, the 2 

 anterior pair of the latter at the apex, the 2 anterior tibiae in front, and the 

 2 middle ones towards the base reddish : the extreme base of the hinder 

 femora and the 4 anterior tarsi also red ; wings smoky-hyaline. 

 Rare : taken in June at Hertford. 



Sp. 223. rufescens. Pallide rufus, orbitis oculorum lined ante alas et puncto ad 

 alarum radicem albis, metathorace et capite postice nigris, antennarum annulo 

 albo. (Long. corp. 4 lin.; Exp. Alar. 7 lin.) 



Ic. rufescens. Steph. Nomen. 2d edit. col. 137. 



Pale red: head black behind; orbits white, slightly interrupted externally; 

 antennae black, with about the 10th to 16th joints white ; thorax with a 

 white streak, extending from the wings to the anterior edge of the collar, 

 and a spot beneath the wmgs of the same ; metathorax black, with 2 red 

 spots; scutellum red ; abdomen the same, fuscescent towards the apex; 

 ovipositor exserted, fuscous ; legs, including the coxae and trochanters, pale 

 red, the tips of the hinder tibiae and of their tarsi fuscescent. 

 Found in June, near London. 



Genus XL.— ISCHNUS, Gravenhorst. 



Antennce generally slender, porrect, but rarely curved in the males, usually so 

 in the females, and shorter than in the males, and a little thickened occa- 

 sionally ; head transverse, narrowed behind ; thorax slightly gibbous ; scu- 

 tellum slightly convex ; abdomen very slender and somewhat cylindric, its 

 basal segment rather convex anteriorly and smooth, the peduncle linear, 

 not much narrower than the anterior portion of the segment, and about as 

 long ; ovipositor a little exserted ; wings moderate ; cellule somewhat 

 triangularly-pentangular : legs slender and considerably elongated. 

 The genus Ischnus, or at least British species thereof, may be 

 known by their great resemblance to those of the preceding genus, 

 combined with the length and slenderness of the antennae and legs, 

 and also of the abdomen, this last being in general ornamented with 

 divers coloured rings, and its basal segment being smooth, instead of 

 rugged, as in Ichneumon, 



