5fi 



MEMOIRS OF THE NATIONAL ACADEMY OF SCIENCES. 



The .subcostal vein of tlie liiiid wings unites witii the Krst radial branch to form a single vein 

 (sY'-H^'i). The short spur from the subcostal of the hind wings is shown by Enderlein to be the 

 costal vein. I may say that I had supposed that this short .spur might possibly be the costal, 

 but Enderlein has now proved it to be such. All the cross veins, according to Enderlein, mor- 

 phologically (genetically) should be regarded as longitudinal veins. He also shows that the 

 enlargement of the wing takes place onto- and phylogeuetically chiefly in the middle zone of the 

 pupal or rudimentarj' wing. 



The numbering of the veins, then, in this and the following parts of this monograph will be 

 according to the system of Redteubacher, Comstock, and Needham as modified by Enderlein, and 

 it is to be hoped that this .system will be generall_v adopted b}- lepidopterists. 



Fip. h. NonK^iioliittirc jinil iiiiinlnTinff of tlif veins of the f<irt_' mid liind winirs nf Eiu'U'S iinjieriaUn. 



XVII. CLASSIFICATION AND LIFE HISTORIES OF THE CERATOCAMPIN.(E, 



Family CKRATOCAMPID.E Harris (enlarged). 



iSaturniidn', auct. in jjart. 



Ceratocampidir Harris, Report insects inj. veg. Mass., p. 287. 1841. 

 Ceratocamjxi(i:r PArK.\RD, Proc. Ent. Soc. Phil. Ill, p 381. Nov., 1864. 

 Ceraiociimpirlx Kumr, Syn. Cat. Lep. Het. I, p. 739. 1892. 



Neimiegex and Dyar, Journ. N. Y. Ent. Soe. II, p. 147. Dec, 1894. 

 Citheroniidx Dyar, Journ. N. Y. Ent. Soc. II, p. 174. Deo., 1894. 

 Sphinfficampidn' Packard, Psyche, ]>. 280. Dec, 1901. 



7un/)t7i/ Character)!. — Head small, but largei'than in the Saturniidw, not prominent; in Adelo- 

 cephala, netirly concealed from al)ove by the overhanging thorax. Front of the head either 

 distinctly triangular in the most typical forms (Adelocephala, Sv.s.sphinx, Eacles) or very narrow 

 (Arseiuira). or moderately wide, with a vestiture either closely cropped, or shaggy, or with the 

 liairs long, luieven, and partly shading the eyes. AVheu denuded, the front is formed by 



