groups. The smooth, shining yellow egg of the Anthrocerids, with one 

 pole transparent, the characteristic green, almost smooth egg of the 

 Sphingids, and the shiny, almost rhomboidal Lasiocampid egg, with 

 its opalescent markings, will be known to all of you. If, however, we 



Lcuiocampa 



Microthylacia 



ErioP'ast&r 



]\4alcLC-osoma fClLsiocam^ 



Trickiura. 



Cosmo 



Poecilocampa 





Hypothetical 

 LojioccvTTipod. bcLSC. 



Fig. I. — Tree illustrating phylogeny of Lasiocampid genera. 



examine the Lasiocampid egg carefully under a high power, we shall 

 observe that it is usually covered with an exceedingly fine polygonal 

 reticulation, an exceedingly minute l)lack knob being placed at each 

 of the angular points, and only just distinguishable under a two-thirds 

 lens. 



