C. A. L. SMITS VAN BURGST, TUNESIAN ICHNEUMONIDAF. 267 
One £ captured near Tunis (Belvedere) in April by sweeping. 
Description of Ischnus trochanteratus nov. spec. 9. Head 
stout, broader than thorax, strongly punctate ; cheeks long. 
sub-buccate. Anteunae filiform, apically attenuate. Thorax 
convex, scutellum elevate. Areola (fore wing) strongly narrowed 
above; nervulus slightly ante furcal; nervellus (hind wing) 
post furcal, broken below the centre. Legs slender. Abdomen 
strongly punctate, elongate, narrow, apically acuminate. Terebra 
exserted, straight. Length 61/2 mm. 
Head black; basal half of mandibles and palpi stramineous; 
internal orbits centrally with flavous dot. Antennae rnfescent, 
white-banded centrally. Thorax and legs red; prothorax partly 
black; radix of wings and tegulae white, a callosity before 
them flavous; sutures blackish. Wings sub-hyaline; stigma 
pale-yellow. Anterior and intermediate trochanters whitish, 
hind trochanters black; hind tibiae and tarsi darker, the 
former basally and apically dark, extreme base white. Abdomen 
red, with blackish incisures; petiole and apical segments black; 
plica ventralis whitish. 
One 9 captured near Tunis (Belvedere) in April by sweeping. 
Description of Mesostenus tricolor nov. spec. 9. Head narrowed 
behind the eyes; closely punctate. Antennae filiform, longer 
than half length of body. Thorax strongly punctate; pleurae 
including speculum, and the petiolar region of metathorax 
punctato-rugulose; the two transverse ridges distinct, the lower 
centrally obsolete; apophyses obsolete; scutellum distinctly 
but not strongly punctate, a little shining; notauli distinct; 
spiracles longish-oval. Nervulus ante-furcal ; areola small, 
broader than high, external nervure the longer; nervus recur- 
rens interstitial; in hind wing abscissula longer than nervus 
recurrens; nervellus broken far below the centre, emitting a 
distinet nervure. Abdomen elongate; basal segment glabrous, 
distinctly foveate between the spiracles, not carinate; post- 
