306 BRITISH ICHNEUMONS. {Exdastes. 



10. gracilicornis, Grav. 



Exetastes ^i^rucilicornis, Gr. I.E. iii. 429, ? ; cf. Brisch. Schr. Ges. Nat. 

 Danz. 1880, p. 199. 



Head with the palpi testaceous, labrum and centre of mandibles 

 badious. Antennae with joints thirteen to sixteen white. Thorax with a 

 white callosity beneath the radix. Scutellinn white, sometimes with a 

 basal black dot. Abdomen fusiform, a little longer than the head and 

 thorax, and as broad as the latter ; black with the three basal segments 

 entirely red, and the sixth and seventh white-margined ; basal segment a 

 little longer than broad, and gradually narrowed towards the base ; anus 

 obtuse and somewhat compressed ; terebra a little shorter than the basal 

 segment. Legs red with the coxae and, except generally their apices, 

 the trochanters black ; apices of the hind femora and of their tibiae, with 

 the basal joint of their tarsi, black. Wings testaceous-hyaline with stigma, 

 radix and radius testaceous-fulvous; tegulae black. Length, 9 mm. 



This 9 is said to differ from E. iUiisor in having the antennae a little 

 more slender and the Icgsa little shorter, though especially in its distinctly 

 stouter abdomen, which resembles that of E. rohustus, Grav. It may at 

 once be known from all our other species of this genus, to which it appears 

 doubtful that it belongs, by its very short basal segment. 



" Tres feminas Besser e Tauria transmisit" (Grav.). It has for long 

 stood in our catalogues and must, consequently, be accorded a position 

 here ; but the single pair, standing under this name in the British Museum 

 certainly do not represent Gravenhorst's species, since their basal seg- 

 ment is decidedly elongate. In all probability it is not British. Very 

 little appears to be known of it abroad. 



Bauclnis voliitatoriiis, Linn. 



[The illustration in the title page is Meniscus setosiis, Fourc] 



