OF WASHINGTON. 427 



macula Schaus I have made the type of Episibine ; dicolon 

 Sepp, plugma Sepp, norba Druce, and copac Schaus belong to 

 Euclea ; sulla Schaus becomes the type of Protalima ; determi- 

 nata Walk., rufa Butl., and varia Walk, are clearly not Sibine ; 

 the latter probably is Euclea, and others will have to be exam 

 ined. 



In discussion Mr. Ashmead suggested the possibility of split 

 ting the genus into two genera by reason of the marked difference 

 exhibited by the larvae, suggesting that careful study of the geni- 

 talia would demonstrate corresponding generic differences in 

 the adult insects. He illustrated this by reference to Hymenop- 

 tera, and stated that the chief objection to the use of genitalia as 

 a means of separation was the extraordinary difficulty of making 

 the studies and the vast amount of time necessary for such work. 



Dr. Dyar then presented a second paper, entitled : 



A DIVISION OF THE GENUS SPHINGICAMPA WALSH WITH 

 REMARKS ON THE 



By HARRISON G. DYAR. 



Our species of Sphingicampa are obviously separable into two 

 groups or genera, in one of which the antennae of the female are 

 pectinated, in the other simple. The first group contains bicolor 

 Harr., which is the type of Sphingicampa, the second the re 

 maining species. The types of the other genera of the Cither- 

 oniida3 have been specified by Kirby. Adelocephala H. S. has 

 type cadmus and Orthorene Boisd. the same. Boisduval states 

 that both sexes have the antennae pectinated and therefore these 

 names cannot be applied to the second group. There remains 

 only the genus Sissphinx Hiibn. (not Sissisphinx, as written by 

 Kirby), type molina. This has the antennae of the female simple 

 and, though the male frequently has the outline of the wings 

 waved and the larva is unusually modified, we may refer our 

 species to this genus, rather than create a new one on slight 

 characters. 



Genus Adelocephala H.-S. 



(=Sphingicampa Walsh, = Orthorene Boisd.) 



A. cadmus H.-S. According to Boisduval (Ann. ent. soc. 

 Belg., xv, 82, 1872), the female has the antennae pectinated. The 

 larva has the subdorsal spines equal on all the segments. Bois 

 duval says : " Le premier anneau garni de pointes acerees de 

 longueur mediocre, les deux anneaux suivants munis de longues 



