18(34.] 375 



above with white, paler beneath. The fore wings are beneath dusky, 

 the transverse dark lines appear through, the subraarginal line being , 

 especially conspicuous, beyond which the mai-gin is uiuch paler. The 

 secondaries are crossed by two obsolete bands, near the middle of which 

 the inner one is more distinct upon the eosta, corresponding to an 

 inner costal spot. 



Length of body, .65; exp. wings, 1.50 inch. 



Mass., (Coll. Dr. Harris, Mr. Sanborn.) 



CERTJRA Schrank. 

 Cerura borealis Harris. 



Phaloena furcula Smith, N. H. Lep. Ins. Ga. p. 143. Tab. 72. (1797). 

 Dicranura borealis Boisd., Guerin, Icon. Griffith's Edit. Cuvier, Regne Animal. 

 Cerura borealis Harris, Rt. Ins. Mass. p. 306. (1841). 

 Cerura bifida var? Walk., Cat. Lep. Br. Mus. V. (1855). 

 Cerura borealis Morris, Synopsis Lep. N. Amer. p. 238. (1862). 

 Cambridge, (Coll. Harris.) Boston, (Sanborn.) Seekonk. R. I., 

 (Coll. Mrs. Bridgham.) New York, (Grote.) 



Desiderata. 

 Drymonia dimidiata H.-Sch., Lep. Exot. Sp. Nov. p. 66, fig. 515. (1856). 

 Gluphisia? septentionalis Walk., Cat. Lep. Br. Mus. V. (1855). 

 " Hudson's Bay," (Walker.) 



Ichthyura apicalis Walk., Cat. Lep. Br. Mus. V. (1855). 

 • Hudson's Bay," (Walker.) 



Subfomily Platyptericid.e Stephens. 



PLATYPTERYX Laspeyres. 

 Platypteryx fabula Grote. 

 Platyjpteryx fahula Grote, Proc. Acad. Nat. Sc. Phil. p. 59. (1862). 



Proc. Ent. Soc. Phil. Vol. 1, p. 346. PI. 3. fig. 2. (1863). 

 New York, (Grote.) . 



Platypteryx genicula Grote. 



Platypteryx yenicida Grote, Proc. Acad. Nat. Sc. Phil. p. 59. (1862). 



Proc. Ent. Soc. Phil. Vol. 1, p. 346. PI. 3, fig. 3. (1863). 



New York, (Grote.) Mass. (Coll. Dr. Harris.) Boston, (Sanborn.) 

 Cambridge, (F. W. Putnam.) 



EDAPTERYX® nov. gen. 

 The head of this delicate genus is smaller than in Platypteryx. There 



^'fiJijeat, Uripv^ wing. 



