the Lepidopterous Fondly Cossidae. 



163 



The genus Zeuzera presents a curious mixture of charac- 

 ters, some specialised, others primitive. Of the former are 

 the absence of palpi and tibial spurs, and the £ antennae, 

 "which have a double row of long pectinations to about § 

 and then become abruptly simple. Of the latter is the 

 termination of the lower branch of the median between 

 veins 3 and I not only in the hind-wings, as in the pre- 

 ceding two genera, but in the fore- wings also. There is 

 also a bar between vein 8 and the cell in the hind-wings, 

 which may merely represent an anastomosis, but probably, 

 as in Xylotrypa, represents the vein marked a in fig. 4. 

 There is some variability in the genus. In Z. coffeae the 

 areole is larger than in Z. aesculi, and vein 11 arises from 



Fig. 14. — Zeuzera aesculi, Latr. 



Fig. 15. — Zeuzera coffeae, Xcitn. 



only just behind it. In aesculi 7 of the hind-wings arises 

 from the connecting bar, in coffeae from the cell. Z. indica 

 has the fore-wing as in aesculi, the hind-wing as in coffeae. 

 In Z. multistrigata 9 arises from the areole, connate but 

 not stalked with 8. In an unnamed, species from South 

 Africa the chorda runs into the upper branch of the 

 median as in some species of Pkragmatoecia. The fore- 

 wing of Zeuzera being as regards the unnarrowed median 

 cell more primitive than in any other genus, it must have 

 arisen independently from the same stem from which arose 

 Xyleutes and its allies, but at a lower level. 



We complete our survey of the family with a group of 

 Neotropical genera, some species of which have invaded 

 North America, in which there is a tendency to reduction of 



