Lepidopterological Contributions. 379 



Platysamia, Grote, (cecropia, Columbia, californica) — all have 

 a peculiarity of habit in the position of the wings when at 

 rest, which had been already observed by Linnaeus. 



In the ITemileucini we have the wings still full^ while no 

 longer so large ; but, in the Dryocampini, we have a subordi- 

 nation of the secondaries, both as to ornamentation and to size, 

 which is prophetic of a lower type, less perceivable in the 

 highest genus — Eacles, but evident in Citheronia, Adeloce- 

 phala, and Auisota, which latter genus, by its small-sized 

 species and their degraded form, prepares us for Tolype and 

 Gastropacha, genera belonging to a lower sub-family type of 

 the same family — the Bombycidae. 



Tkibe, DRYOCAMPINI.* 



Genus, Citheronia, Hiibner. 



The species belonging to Citheronia seem to us, as yet, 

 insufficiently separated, and there exist certain errors in the 

 synonymy which we endeavor to correct in our present notice 

 of the genus. Both Citheronia and Eacles, are erected by 

 Hiibner in the " Verzeichniss ; " the types of the genera being 



* We take for this Tribe a name derived from Dr. Harris's generic name T>ry- 

 ocampa; the species included under this generic name had been previously asso- 

 ciated by Hiibner under Anisota, 'which latter appellation must accordingly be 

 retained for the genus. Vide Grote, Proc. Ent. Soc, Phila., p. 93, June, 1864, and 

 Packard, Proc. Ent. Soc. Phila., p. 384, Nov., 1864 ; also, a paper entitled: "De- 

 scription of a new species of Citheronia, and Remarks on Anisota rubicunda," by 

 ourselves in the same Proceedings, April, 1865. The North American genera 

 composing this tribe, are Eacles, Hiibner; Citheronia, Hiibner; Adelocephala, 

 Boisduval (remarkable for having the antennae pectinate in both sexes) ; and 

 Anisota, Hiibner. These genera are naturally brought together through their 

 metamorphic and imaginal characters. The " Family Communiformes" Hiibner, 

 Verz., contains certain of the genera ; this name is quite expressive of the habitus. 



For remarks on the classificatory position of the Tribe, see Grote, Proc. Ent. 

 Soc, Phil., p. 37, August, 1865 ; also, for description of a new Mexican Adelo* 

 ccpliala, id. sciip., p. 7, May, 1866. 



