278 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.41. 



Family PTEROJVIALID.E. 



AGIOMMATUS, new genus. 



Belongs to the tribe Sphegigasterini as defined by Doctor Ashmead; 

 mandibles large, strongly 4-toothed; eyes strongly converging above; 

 antennae inserted on the middle of the face, 13-jointed, with 3 ring 

 joints, very similar in the two sexes; lateral ocelli hardly their 

 own width from eyes; cheeks below broad, at rear sharply angu- 



lated ; head strongly excavated behind, 

 the vertex thin; parapsidal furrow 

 incomplete; abdomen petiolated, peti- 

 ole slightly shorter than the hind 

 coxae; anterior coxas with a distinct 

 spine in front; propodeal spiracles 

 elongate; propodeum with a strong 

 ''''' 'T^f nrv'™T™T.'- °''" median and a transverse carina which 



LINE OF ANTENNA OF FEMALE. 



touches the caudal ends of the lateral 

 folds forming a depressed area; propodeum with a neck; mar- 

 ginal vein long, slightly thickened, postmarginal about two-thirds 

 as long as marginal, stigmal shorter; prepectus with a small 

 obscure triangle above; hind tibiae with one spur; segments 1-3 

 of abdomen short, segment 4 longer than all other segments 

 together. 



The convergent eyes and spine on the front coxae readily dis- 

 tinguish this genus. 



Type of the genus. — A. sumatraensis Crawford. 



AGIOMMATUS SUMATRAENSIS, new species. 



Female. — Length about 2.25 mm. Head and thorax blue green, 

 abdomen brown; legs whitish, the coxae more testaceous; antennae 

 light brown, the scape and pedicel whitish; face finely rugulosely 

 reticulated; median lobe of mesoscutum, scutellum and most of 

 mesopleurae with thimble-hke punctures; lateral lobes of mesoscutum 

 and axillae finely reticulated; sculpture of propodeum between 

 spiracles similar to that on scutellum but much finer; neck of propo- 

 deum with a few fine lines. 



Male. — Length about 2.10 mm. Similar to the female except in 

 secondary sexual characters. 



Habitat. — Medan, Deli, Sumatra. 



Type.— Csit. No. 13878, U.S.N.M. 



Seven specimens reared by Doctor de Bussy from eggs which 

 Doctor Dyar says are probably noctuid. 



