426 ARKIV FÖR ZOOLOGI. BAND 1. 



and Massake, Kitta is situated near Ekundu, Itoki on the 

 river Massake and N^dian on the river of the same name. 



Fam. Ghrysididse. 



Stilbum Spin. 



Spinola, Insect. Ligur. I. p. 9 (1806). — Mocsåry, A., Mono- 

 graphia Chrysididarum orbis terrarmn nniversi, p. 189, (1889). 



St. cyanurum. Först. 



Mocsåry 1. c. p. 190. 



The collection contains 15 ?$ from Ekundn ( 22 /i2 1890) 

 and Bonge ( 26 /i2 1890). The species was common and para- 

 sites probably on the larves of Sceliphron spirifex (L.) 



It is a very pecnliar fact that in the great monograph 

 by Mocsåry as well as in the catalogne of hymenoptera by 

 Dalla Torre the principal form of this species is not given 

 for the eethiopian region. And consequently it seems as if 

 the species were represented there only by the var. amethy- 

 stinnm Fabr. The differences between the variety and the 

 principal form consist in small variations in the colonr and 

 in the pnnctnation of mesonotnm. The var. amethystimim is 

 onecolonred and the principal form has the third abdominal seg- 

 ment violet-cyaneoiis. Moreover, the front-part of the median 

 lobe and the lateral parts of mesonotnm are (thinly and) 

 ånely pnnctnated nearly smooth by amethystinnm Fabr. 



Of the specimens in the collection there is none with a 

 perfectly onecolonred abdomen, but the difference in colour 

 between the two first and the third segments is by some spe- 

 cimens very insignificant. Most of them have the two first 

 segments brilliant golden-green and the third one deep violet- 

 blne. The punctnation on the mesonotnm is very fine and 

 thin especially on the median lobe. The length 11.5 — 

 15.5 mm. 



Geographical distribution. — Forma principalis: Sonth 

 Enrope, A sia Minor and Transcaspia. Kohl (Znr Hymen- 

 opterenfanna Afrikas in Ann. des k. k. natnrh. Hofmns. 

 Wien, Bd IX, 1894, p. 344) notes it from Mossambiqne 



