88 AMERICAN ENTOMOLOGY. 



Der KaiserscTimetterllng Muller, Nat. Syst. Supp. p. 284 and 

 496. (Herbst.) 



Desc. Body above black, with a yellow line each side, passing 

 over the origin of the wings, and over the head each side before 

 the eyes : superior wings yellow, costal margin black with four 

 black bands, of which the three exterior ones are abbreviated ; 

 exterior broad margin black with a series of small white spots and 

 white crenulations on the edge : beneath, the colors are paler, and 

 the dots of the exterior margin are much larger : inferior wings 

 yellow ; posterior portion black, with six lunules on the margin 

 yellow, the first and last fulvous, the edge deeply crenated, the 

 crenations white ; anal angle fulvous edged with white, and with 

 a bright green lunule above, and one or two green spots near it ; 

 disk, with an oblique black band, proceeding from the basal band 

 of the superior wings, abbreviated near the black portion of the 

 wing, and curving round and returning upward along the inner 

 margin : tail moderate ; beneath somewhat like the superior page, 

 but the radiating lines proceeding from the discoidal cellule are 

 black, the marginal lunules are much larger, and have a large ful- 

 vous spot in the middle of each, the black portion is much tinged 

 with green, and there are about four fulvous spots above it : pec- 

 tus yellow, with two oblique lateral black lines. 



Ohs. This beautiful, though very common insect, has already 

 been noticed by many authors, who, for the most part, unite their 

 testimony in favor of its similarity to the P. 3Iac7iaon Fabr., of 

 Europe. This correspondence is, however, only a general one, 

 for on a particular comjiarison, a sufficient difference will be evi- 

 dent. It is found as far north as Maine, from whence I have re- 

 ceived a specimen sent by Mr. E. Holmes, of Gardineer Lyceum. 

 The annexed plate represents this species in two positions. 



ENOPLIUM. Plate XLI. 



Generic character. Three last joints of the antennae dilated 

 forming a deeply serrated mass ; the fourth, fifth, sixth, seventh, 

 and eighth joints very small : palpi prominent securiform ; 

 body cylindrical ; tarsi with but four very obvious joints : penul- 

 timate joint bilobate. 



Obs. The species that compose this genus were separated by 

 Latreille, from the genus TiUus of Olivier and Fabricius, from 



