436 ARKIV FÖR ZOOLOGI. BAND 1. 



The hind-margm of the pronotum sligthly curved and 

 the distan ce in the middle-line from the collnm to the hind- 

 margin a little longer than the half of the mesonotnm. The 

 median segment from above a little longer than broad, in the 

 middle and at the sides with eoarse transversal wrinkles. 



The wings dark fnscous with blnish coppery effnlgence 

 and with large hyaline spöt at the base of the first discoidal 

 cell. The onter end of the third cubital cell reaches a little 

 över the radial one; the second transverse cubital nervure 

 touches the radial nervure a little before the middle of the 

 part that forms the anterior börder of the 2d and 3d cubital 

 cells. 



On the hind pair of legs the longest tibial spur is not 

 so long as the half of metatarsus. The claws of the two 

 posterior pairs of legs at the base with two short teeth of 

 which the apical one is the longest. 



Length 34.5 mm. 1 Exp. ÖS mm. 



Male. — Of nearly the same colour but the mouth-parts 

 darker, the golden brownish pubescence on the thorax less bril- 

 liant, the pronotum nearly perfectly black and the whole ab- 

 domen brown, darkest on the back. 



Clypeus narrower and a little more convex the upper 

 margin in the middle a little sinuated. Labrum broader 

 emarginated. The longest interval between the eyes on the 

 vertex as long as the second joint of the flagellum. The me- 

 dian segment in the dorsal middle-line broadly carinated. 

 The postscutellum in the middle with a low conical protu- 

 berance. The second transverse cubital nervure touches in 

 the middle the part of the radial one that forms the anterior 

 margin of the 2d and od cubital cells. 



In other parts agreeing with the female. 



Length 29 mm. Exp. 64 mm. 



Geographical distribution. — Afr.: Sierra Leone. 



It is not without hesitation I refer these males to S. 

 ochropus Stål. The two specimens are so like the males of 

 the following species that at first I believed them to be only 

 varieties. But the coloration is a very different one, the shape 



1 The type-specimen of Stål mesures oiily 31 mm. Stål states 44 mm. 

 Imt lie is likely to liave included the antennse. 



