150 Eev. T. A. Marshall's monograph of 



Elongate, slender. Labial palpi tri- or subquadriarticulate. 

 Abdomen linear, with 8 visible segments ; suturiform articulation 

 obsolete in the middle ; 1st segment striolated, much longer than 

 broad, slightly attenuated at the base ; tubercles situated before 

 the middle. Legs long and slender. Terebra elongate. 



Head transverse, broader than the thorax ; clypeus separated 

 from the face by a curved impression, deeper at the sides, with 2 

 basal foveae ; mandibles bidentate ; antennae slender, setaceous, 

 elongate, or, if shorter, subincrassated towards the apex ; maxillary 

 palpi 6-jointed. Abdomen with segments 1 — 3 elongate, the 

 others very short ; 1st segment, and sometimes the base of the 2d, 

 striolated, the rest smooth ; sutures visible (except the middle of 

 the suturiform articulation) ; belly of the 5 compi'essed, cariuated. 



The species are few in number, and only the first is 

 of common occurrence ; Nees von Esenbeck described 5, 

 in two sections, the latter of which comprised only 

 E. trigonus, with 3 cubital areolets, now transferred to 

 the genus Microtijiyus, Eatz. ; his first species, E. macro- 

 ceplialus, belongs apparently to the next genus. Wesmael 

 and Haliday each added a new species, and another, 

 E. rufipes, is figured by Herrich-Schaffer in Panz. F. G., 

 154, 24. 



These insects, so far as known, are parasites of 

 Lepidoptera. 



Table of Species. 



(4) 1. Second abdominal segment smooth. 



(3) 2. Scutellum and pectus more or less rufous ; an- 

 tenna 5 longer than the body, slender, 

 setaceous, more than 40-jointed . . . . 1. extensor, L. 



(2) 3. Scutellum and pectus black ; antennas J shorter 

 than the body, iucrassated towards the apex, 

 22-jointed . . . . . . . . . . 3. Jlavipes, Hal. 



(1) 4. Second abdominal segment rimulose .. .. 2.])allidipes,'i^ees, 



1. Euhadizon extensor, L. 



Ichneumon extensor, L., Fn. Suec, 1613 ; S. N., 935 ; 



Fimpla extensor. Fab., Piez., 115, ? . 



Euhadizon pectoralis, Nees, Mon., i,, 236 ; Hal,, Ent. 



Mag,, iii., 132, ? ; Wesm., Nouv. Mem. Ac. Brux., 



1835, p. 165, 3" ? ; Eatz,, Ichn. d. Forst., ii., 



pi. ii., f. 30. 



Black ; palpi and legs flavo-testaceous ; mandibles, pectus, 



pleurae, scutellum, often the prothorax, disk of the mesothorax 



