112 Transactions. — Zoology. 



Ventral keel reaching to the fourth segment ; the eighth 

 ventral segment distinct. Areolet five-angled. In the male 

 the ventral keel extends to the apex of the fourth segment ; 

 the apical segments bluntly pointed. 



The areolet is narrowed at the top ; the transverse basal 

 nervure is interstitial ; the gastracceli are indistinct ; the 

 post-petiole is obliquely raised from the base and apex. The 

 longish antennae, the obliquely sloped apex of median segment, 

 which is not hollowed in the middle, and the abdomen with 

 eight segments in the female, and with the apex rather bluntly 

 pointed, as in Ambly teles, serve to distinguish this genus from 

 Ichneumon. 



Degithina buchanani, sp. nov. 



Ferruginea ; capite thoraceque nigro- et flavo-maculatis 

 pedibus ferrugineis, coxis posticis supra late flavo-maculatis ; 

 alis hyalinis ; nervis stigmateque nigris, 5 . 



Long., 16 mm. 



Antennas black, brownish beneath towards the apex ; the 

 scape for the greater part rufous. Head rufous, the front and 

 the lower part of the vertex black ; yellow arc, an irregular 

 spot, widened at the top and bottom, on the upper inner 

 orbits, the lower outer orbits to the base of the mandibles, an 

 oblique somewhat conical mark on the top behind the ocelli 

 and touching the eyes, and a broad irregular mark on the sides 

 above the clypeus, yellow. The front at the ocelli is irregu- 

 larly punctured and striated, and with a shallow furrow, 

 broad at the top ; there is an elongated fovea above the 

 lower ocellus. The raised central part of the face is 

 punctured ; striated laterally ; the clypeus is sparsely punc- 

 tured ; mandibles rufous, yellowish beyond the middle. 

 Thorax mahogany-colour, darker on the sides of the meso- 

 notum, the base of the metanotum, and on the sternum. The 

 following parts are yellow, tinged with orange : The edge of 

 the pronotum, its base, a mark, longer than broad and 

 rounded at the apex, on the middle of the mesonotum 

 near the apex, the scutellum, post-scutellum, the greater part 

 of the posterior median area of the metanotum, an irregular 

 mark on the base of the mesopleurae, rounded above and in- 

 cised at the apex, a larger one at the apex lower down, and 

 an oblique one slightly incised at the apex on the rneta- 

 pleurae. The pleurae smooth, shining ; there are some stout, 

 oblique keels under the fore wings ; on the lower part of the 

 mesopleurae are some distinct, elongated, deep foveae ; the 

 apical furrow is crenulated ; the metapleurae sparsely punc- 

 tured in the middle. The base of the median segment is 

 obliquely depressed in the middle ; the posterior median area 

 is longer than broad, slightly and gradually narrowed towards 



