of C. potaforia, G. guenifo/ia, and E. ilicifolia can leave no doubt 

 that these do so. The characters of the egg and imago, apart from 

 the intermediate stages, are sufficient to pruve this, and the pupae 

 show an equally close alliance. The larvae are so exceedingly 

 specialised in almost all the Lasiocampids that the alliances, unless 

 the species are very closely related indeed, are often much obscured 

 in this stage, there being no very great similarity among the larvae 

 except in very closely related species, and, even in these, protective 

 secondary developments often obscure somewhat similar structural 

 peculiarities. 



At present it seems to me that as tribal arrangements our genera 

 fall into the following : 



I. PcEcilocampa. 



II. Trichiura. 



III. Eriogaster. 



IV. Lasiocampa. 



V. Malacosoma {Clisiocanipd) and Macrothylacia. 

 VI. Cosmotriche, Gastropacha, and Phyllodesma. 



To attempt to divide our few British species of Lasiocampid moths 

 not only into at least nine different genera, but into no less than six 

 tribes, will, I doubt not, be considered sheer nonsense by the purely 

 British collector, who thinks about the regularity of his cabinet 

 drawers the moment one speaks of classification, as if it matters 

 where moths are placed in a cabinet so long as one knows where 

 to find them when one wishes to examine them. 



Before leaving this part of my subject I would call attention to a 

 paper* by Dr. Dyar, recently published. In this the family is called 

 the LackneidcB, and he says, " The oldest plural term for the family 

 is Hiibner's Lachneides, and must form the family name, as shown by 

 Grote." I have long since come to the conclusion that synonymy 

 is of the devil. I cannot attempt to explain what Dyar means, I can 

 only hope that it is all right. 



To complete this part of the paper I add a comparison between 

 Kirby's and Dyar's conclusions so far as relates to our British 

 species : 



KiRBY, "Cat. Lep. Het.," 1892. Dyar, "Can. Ent.," 1898. 

 Trichiura cratcegi. Trichiura cratagi. 



Lasiocampa quercils. Lasioca77ipa quercus. 



„ trifolii. „ trifolii. 



Macrothylacia rubi. Macrothylacia rubi. 



Poecilocampa populi. Pcecilocampa populi. 



* 'A Generic Revision of the Lachneidse (Lasiocampidse),' "Canadian 

 Entomologist," XXX., p. 2, et seq. 



