CYRTID^ 



453 



the outer cross-veins have disappeared, and in such a case the lower one of the three 

 vagus veins between the cubital vein and the lower branch of the postical vein 

 would be the lower branch of the discal vein, and there would be three discal 

 veinlets extending towards the posterior wingmargin, equalling Astomella in number 

 not in direction ; the radial vein would however be entirely absent in 



though 



A. Astomella Lindenii Erichs. x 8. 



B. Pterodontia analis Westtv. x 8. 



C. Pterodonia Virmondii Erichs, x 8. 



D. Oncodes basalis Walk, x 9. 



E. Philopota conica Wied. x 9. 



F. Acrocera sanguinea Meic/. x 10. G. Acrocera globuhis Panz. x 10. 



Fig. 2 0.— Typps of venation in Cyiiidce. 



Oncodes, but this is proved to be of only specific value in Acrocera ; I have not full 

 confidence in my interpretation of the venation in Oncodes, and my doubt 

 infinitely increases in Aoocera. FhUopota (fig. 260 E) shows the mediastinal, sub- 

 costal, and cubital veins clearly defined, but the next (incomplete) vein may be the 

 upper branch of the discal, and in such case the discal cross-vein is absent, but 

 below that there comes the almost complete second branch of the discal vein, 



