452 ARKIV FÖR ZOOLOGI. BAND 1. 



teral bands on the abdonien. The specimens of the Museum 

 have sulphureous lateral bands. 



Length 18 mm. 



Exp. 30 mm. 



Geographical Distribution. -- Central-Africa. Before found 

 in the Cameroons. 



Odynerus Latr. 



Latreille, Hist. nat. Crust. & Insect. III, 1802. 



O. falcatus Tullgr. n. sp. (Pl. 25, %. 13 a, b.) 



A single female. • 



Female. — Black; the eiypeus is dark brown in its upper 

 half nearly black and at the sides with a vertical yellow 

 band; the mandibulse dark red-brown; the scapus beneath 

 red-brown and the antennpe a little lighter beneath; the 

 eheeks and the tegulse brownish; on each side of the median 

 segment with a nearly squarish yellow spöt; the first abdo- 

 minal segment on the dorsal side at the hind margin with a 

 very narrow yellow stripe, that at the sides is bent forwards 

 and concluded by a large spöt; the second segment on each 

 side with an angle-bent yellow mark, that resembles a little 

 scythe; on each side of the following segments a transverse 

 yellow stripe. 



The clypeus is heart-shaped at the apex with a little 

 emargination that projects upwards as a very shallow furrow. 

 The middle-part of the clypeus with numerous strong points 

 and with more or less distinct wrinkles. The clypeus pro- 

 jects upwards between the antennas as a narrow carina. The 

 mandibulse with three teeth at the inner margin. The eyes 

 touch the base of the mandibulaj. The interval between the 

 posterior ocelli as long as the distance from the eyes. The 

 interval between the eyes on the vertex about as long as the 

 joints 1 — 5 of the flagellum. 



The head and thorax closely and coarsely punctured. The 

 median segment concave l)ehind and on this part densely 

 transverse striate. The postscutellum a little elevated with 

 a transverse ridge. The abdonien nearly smooth with scat- 

 tered very fine punctuation. 



