the Lepidopterous Family Cossidae. 



177 



apparently extinguished by coalescence. In this genus, as 

 in Procris, the median veins are developed feebly. 



From this analysis it will be evident that the Zygaenidae 

 are less primitive in their neuration than the Cossidae, and 



// /»/ 



Fig. 3S. — Zygaena filipendulae, 

 Linn. 



Fig. 39. — Susica {Miresa) 

 corones, Fab. 



that it is quite impossible that the latter family should 

 have originated from the former, as maintained by Sir 

 C4eorge Hampson in his " Catalogue of the Lepidoptera 

 Phalaena" (i, p. 12). This con- 

 clusion is strengthened, although 

 such confirmation is unnecessary, 

 by the absence of tibial spurs in 

 the former family. 



Limacodidae. — That this family 

 is structurally closely allied to 

 the Zygasnida? is sufficiently 

 shown by the accompanying figure 

 of the neuration of Susica, which 

 in the absence of the areole and 

 the structure of the media of fore- 

 and hind-wings and in other points 

 agrees closely with Chalc sia. 



As a less primitive genus I have 

 figured Apoda, in which the 

 median cell has been lost in both wings. . The short vein 

 a present in Susica, which I believe to represent the first 

 radial, is here replaced by a short anastomosis. 



At this point we will consider the genus Paracaseins, 



TRANS. ENT. SOC. LON1). 1918. — PARTS I, H. (DEC.) n 



Fig. 40. 



. [<poda avettana, 

 Linn. 



