302 BRITISH ICHNEUMONS. [Exetastes. 



This species is not unlike E. nigripes and E. illusor, but with the head 

 entirely black, the 9 antennae shorter, and the basal segment broader 

 and more curv'ed ; the 9 n^ay be further known by its doubly long tere- 

 bra, immaculate antennae and ferrugineous-, not white-, banded tarsi. It 

 is an altogether stouter and thicker insect, with the whole thorax clothed 

 with ver}' short erect setae. 



It is a common species on the Continent from June to August on um- 

 belliferae ; and Giraud has bred the variety hicoloratus from CiictiUia 

 scrophuJariae in France. I have several specimens of both sexes taken by 

 Dr. Capron about Shere in Surrey, and one from Felden in Herts, from 

 Mr. Piffard's collection. 



6. aethiops, Gvav. 

 Exetastes aethiops, Gr. I.E. iii. 398, d ? . 



Head black ; of $ with the clypeus, sometimes also a mandibular and 

 a facial mark pale testaceous. Antennae nearly as long as the body and 

 apically curved ; somewhat shorter in 9 • Thorax gibbulous with sub- 

 testaceous pilosity and, like the scutellum, immaculate. Abdomen a little 

 longer and narrower than the head and thorax, of $ convex and of 9 

 apically compressed ; basal segment canaliculate and gradually dilated 

 towards the apex, with the post-petiole a little longer than broad and the 

 tubercles somewhat before the centre ; terebra one-seventh the length of 

 the abdomen. Legs black with the anterior, except their coxae and tro- 

 chanters, red ; anterior femora of ^ sometimes infuscate above, hind 

 ones of 9 castaneous beneath ; hind tibiae of J sometimes centrally 

 paler. Wings somewhat clouded ; stigma and radius infuscate, radix and 

 ^ tegulae stramineous, latter infuscate in 9 ; areolet irregularly triangular 

 and petiolate. Length, ii — 12 mm. 



Gravenhorst instances a J variety, which is rather larger with the 

 mouth and clypeus red ; the antennae a little shorter and stouter, dull 

 ferrugineous with the two basal joints black ; the abdomen rather longer 

 and all the femora red. It is most probably distinct. 



This species is similar in size and conformation to E. fulvipes, Grav., 

 but with the antennae, wings and legs longer. The latter is thought to 

 be probably synonymous with Notopygus fulvipes, Zett. (Ins. Lapp. 386) 

 by Holmgren (Sv. Ak. Handl. 1858, n. 8, p. 378) and in all likelihood 

 E. aethiops has as little relation with this genus as now understood. The 

 short antennae and pilose thorax are similar to E. leavigator. 



It is said to occur on umbelliferous flowers in woody places in early 

 August. No one, however, appears to have recognised it, though Marshall 

 introduced it as British in his "Catalogus" of 1870; it is not represented 

 in my own or the British Museum collections, 



