ERISTALIS QUADRATICORNIS. 79 



8. Volucella seutellata, Macq. 



Macq. Dipt. ex. II. 2. 25. 9; pi. 6, f. 2. — Blanchard 

 in Gay, Hist. fis. y pol. de Chile, VIL 405. 1 ; pi. 4 , f. 6. 



A male from Chili (Dohrn). 



Macquart's expression: »bord postérieur de l'écusson a 

 six petits tubercules terminés chacun par une soie" is not 

 quite exact; there are no bristles, but in reality six black 

 spines , which are warty , thickened at their base and pla- 

 ced three by three on the margin. On account of this cha- 

 racter the species approaches to the grnus Temnocera; how - 

 ever the third joint of the antennae is hardly impressed 

 in front. The yellow margins of the thorax are almost 

 invisible , and the colour of the antennae is rather obscure 

 testaceous. 



9. Er is talis bogotensis , Macq. 



Macq. Dipt. ex. II. 2. 52. 3. 



In the Leyden Museum there is a cT of this species whereas 

 I possess both sexes myself; tbey are all from the Argen- 

 tine republic and were presented by Prof. Weyenbergh, 



Macquart was only acquainted with the 9 ; his descrip- 

 tion agrees with my female specimens , except an insigni- 

 ficant difference in the pattern of the abdomen , the yellow 

 lateral spots of the second segment not being extended on 

 the third, and the metallic band of the latter not being 

 interrupted in the middle, but merely a little incised in 

 front. In the cT the pilosity of the eyes is , as usual , lon- 

 ger and the yellow spots of the abdomen are larger and 

 extend on the third segment. 



10. Eristalis guadraticornis, Macq. 



E. quadratic ornis , Macq. Dipt. ex. II, 2. 31; pi. 20, f. 

 2. — Blanch, in Gay, Hist. fis. y pol. de Chile, VII. 406. 



I^fotes from th.e Leyden AXuseum, Vol. I"V. 



