MEMOIRS OF THE NATIONAL ACADEMY OF SCIENCES. 61 



associated with the Saturniida?, also the Eurasian genus Aglia and tlie Indian genus Salassa from 

 the Saturniida- and associate them with the Ceratocampina\ 



The group, as we are now disposed to limit it. is divided into several subdivisions of nearl\- 

 equal rank. 



We conclude, then, that the protosphingine group for which we have retained the name 

 CeratocampidcC is represented b}- the following subfamilies, though we would add that they may 

 ultimately be regarded as of family rank: 



1. Veratocamjnnx (Adelocephala, Sj'ssphinx, Anisota, Eacles, Citheronia). 



2. Agliime (Arsenura, Khestyntis, Dysdjeraonia, Copiopteryx, Aglia, Cercophana, etc.). 



3. Bunselnie (Bunfea, Lobobuntea, Imbrasia, Gynanisa, Cirina, Usta, Nudaurelia, Antherina, 

 Melanocera, Cinabra, Aurivillius. etc.). The genera Cyrtogone, Euda?monia, and others appear 

 to be types of additional subfamilies. 



SYNOPSIS OF THE (GENERA. 



Imago. 



$ Antenna? with joints 1-17 or IS doubly pectinated; 9 antennft- simply pectinated or simple; thorax full and over- 

 hanging the head; maxilla' slightly developed; liody and wings sphinx-lijie Adelocephala 



Head (denuded), narrower than in Adeloeephela; clypeus produced into a knob-like protuberance; body and wings 

 sphinx-Hke Syssphinx 



$ Antennw with joints 1-15 doubly pectinated; in 9 simple; palpi short and feeble; maxilla- either wholly or nearly 

 aborted ; hind wings of S triangular; costal edge much curved Anisota 



S Antennte broadly pectinated; fore wings wide, apex subacute; outer edge less oblique than in Citheronia; hind 

 wings rounded ; palpi 2-jointed Eacles 



Fore wings subacute at tip; hind wings rounded, but apex more jiroduced than in Eacles Citheronia 



Larva. 



Prothoracic segment with either spines or roumled tubercles; second and third thoracic dorsal and subdorsal spines 

 but little longer than those of abdominal segments 1 to 7; caudal horn long, recurved Adelocephala 



Like those of Adelocephala, but the thoracic spines and caudal horn short and conical; none on abdominal segments 

 1 to 7 Syssphinx 



No fused caudal horn; two separate tubercles i present on eighth abdominal segment; a median spine on segment 9; 

 body striped longitudinally Anisota 



Spines short and stout; no long jirothoracic spines Eacles 



Spines all very long; long prothoracic horns Citheronia 



Pupa. 



A. Maxillae very short, the two together scarcely longer than broad. 



Cremaster very long, deeply forked; surface rugose Adelocephala 



Cremaster very long, deeply forked: surface smoother Anisota 



B. Maxillae long. 



A long stout cremaster Eacles 



Cremaster vestigial, reduced to a small bilobed tubercle, shorter than broad Citheronia 



Habits. — Pupa subterranean; the larva spinning no cocoon. 



Geographical distrihutioii. — Confined to Neogala, from which a few species have migrated 

 into eastern America north of Mexico, and east of longitude 100. (See fig. 6 and maps I-IX.) 



^DELOCEPH^L^ Herrich-Sohaeirer. 



Plate XIX, etc. 



Dryocampa Harkis, Rep. ins. Mass., p. 293. 1841. 



Sphingicampa'WAUin, Proc. Bost. Soc. Nat. Hist. IX, p. 290. 1804. 



Adelocephala 'H.ERR.-Scn.ii.En-EH, Aussereurop. Schmett. I, pp. (iO, 78. 18.55. (Nodescr. ) 



Olhorme Boisdi'v.\i., Annales Soc. P-nt. Belgique, XV, p. 82. 1872. 



Adelocephala Boisduvai., .-Vnnales Soc. Ent. Belgique, XV, |). 85. 1872. 



.Tewett, Papilio, II, p. 38. March, 1882. 



KiRBY, Syn. Cat. Lep. Het., I, p. 741. 1892. 



Dkuce, Biologia Centr. .\mer. I.ep. Het., I, p. 170. 1885. 

 Sphingkampa Kirby, Syn. Cat. Lep. Het., I, p. 740. 1892. 



Necmogen and Dyer, Journ. X. Y. Ent. Soc, II, p. 148. Dec, 1894. 

 Adelocephala and Syssphin.v (in part) Dyer, Proc. E^nt. Soc. Wash., IV, p. 427. May 13, 1901. 



