GENUS NEUROTERUS. 129 



wbich is depressed, the depression having a raised 

 point by means of which it is attached to the leaf; 

 above there is a semicircular depression, with an 

 elongated elevation in its middle. Length 5 — 6 mm. ; 

 width 3 — 4 mm. ; height 4 mm. 



Inquilines. — Synergus pallicornis, S. albipes, and, if 

 Brischke be correct, S. ihaumacera. 



Parasites. — Syntomaspis cyaneus, 8. regius, Eurytoma 

 setigera, Mayr ; E. rosse. Kirchner records Siphonura 

 Schmidti, Rtz., and S. brevicaudis, Rtz. ; Brischke, 

 Syntomaspis caudatus, Torymus abdominalis, T. auratus, 

 Decatoma biguttata, Eurytoma signata, Pteromalus Saxe- 

 senii, Mesopolobus fasciiventris, Torymus variolosus, 

 Olinx gallarum, and Torymus abbreviatus, Boh. (= 

 chloromerus, Wlk.). 



Rare. 



Germany, Austria, Switzerland. 



Genus Neuroterus. 



Neuroterus, Htg., Germ. Zeits., ii, p. 135 ; Mayr, Eur. Cyn., 



p. 37. 

 Spathegaster, Htg., 1. c, 186. 



Ameristus, Foerster, Yerh. z.-b. Ges. Wien, 1869, 333. 

 Manderstjemia, Radoszkowsky, Bull. Mosc, 1866, xxsix, 304, 

 tab. ix, fig. 4. 



Scutellum not separated from mesonotum by a suture. Antennae, 

 $ 13 — 15-jointed, $ 15-jointed, in $ thickened towards the apex. 

 Parapsidal furrows present, or more often incomplete. Cheeks short, 

 furrowed or not furrowed. Scutellar depression complete, angled, 

 without a keel at its fore border, except indistinctly in aprilinus. 

 Abdomen lenticular, compressed, in £ petiolate. Wings with an elon- 

 gated radial cellule, open at fore margin, but may be closed in aprilinus ; 

 hyaline or spotted with smoky patches, or entirely smoky. Claws 

 simple or bifid. Antenna? and legs without depressed, longish, stiff 

 hairs. Maxillary palpi 4-, labial 2-jointed. 



In the agamic form the abdomen is longer, larger, 

 and more compressed than in the sexual, the ovipositor 

 being also longer (occupying the entire abdominal 

 cavity) and more or less spiral (in Iseviusculis com- 

 pletely spiral), instead of being short and straight as 

 in the summer brood. In colour the species are black, 

 with lighter-coloured legs ; red is never seen in Neuro- 



vol. iv. 9 



