74 Mr. R. E. Turner's Notes on the Thynnid^, 



and median segment combined, inserted rather far apart, as far from 

 each other as from the eyes, the five apical joints slightly arcuate ; 

 the interantennal prominence transverse at the- apex, with a very 

 slight tubercle in the middle ; an obscure carina from the anterior 

 ocellus reaching almost to the base of the clypeus. Head closely 

 and rather finely punctured, the eyes diverging towards the clypeus ; 

 vertex broad, the posterior ocelli twice as far from the eyes as from 

 each other. Thorax and median segment closely punctured ; pro- 

 notum short, narrower than the head, the anterior margin slightly 

 raised ; the mesonotum about one-third broader than long, with the 

 usual two longitudinal sulca? on each side ; the scutellum moderately 

 elevated ; the median segment rounded, as long as the breadth at 

 the base, with a longitudinal sulca on each side at the apex. Abdo- 

 men slender, half as long again as the head, tliorax and median 

 segment combined, closely and shallowly punctured, some of the 

 puncti;res confluent ; the first segment slender at the base, with a 

 short longitudinal sulca not quite reaching the centre, segments 2-5 

 with a feebly depressed transverse line close to the base ; the epipy- 

 gium narrowed towards the apex and subtruncate. Hypopygium 

 narrow, with almost parallel sides, projecting a little beyond the 

 epipygium and rounded at the apex. 



Black ; the mandibles except at the apex, the clypeus, the cheeks, 

 the inner orbit of the eyes not reaching the summit, a small spot 

 above the base of each antenna, the anterior margin of the pro- 

 notum and an arched line behind it touching the anterior mar- 

 gin in the middle, a large spot in the middle of the scutellum 

 and a small one at each at its basal angles, the postscutellum, a 

 round spot on each side near the apex of the median segment, a 

 spot on each side of each abdominal segment, occupying almost 

 the whole length of the segment but hardly extending onto the 

 dorsal surface and a narrow line on the femora beneath yellow ; 

 the seventh segment ferruginous at the apex. Wings flavo-hyaline, 

 nervures ferruginous. 



Length 20 mm. 



Hah. TucuMAN, N.W. Argentina (R. ^cJmdz). 



Nearly allied to Thynnus lateralis, Klug, but the shape 

 of the median segment is very different and the whole 

 insect is of slenderer build. 



Elaphroptera ichneumonca, Klug. 



Thynnus iclineumoneus, Klug, Physik. Abh. Akad. Wiss, 

 Berlin, p. 25, n. 22, 1840 (1842), ^. 



