1881.] Entomology. 327 
concentrate an overwhelming attack upon any group of insects 
which becomes suddenly superabundant. It is evidently impossi- 
’ 
animals. 
Notes on Papirio! pHILENOR.—In the Canadian Entomologist 
for January, 1881, Mr. W. H. Edwards, of Coalburgh, W. Va., de- 
scribes in full the egg and earlier stages of this interesting but- 
terfly. Mr. Edwards, remarks that the larva must undoubtedly 
feed upon some other plant than Aristolochia, since Mr. Mead 
found the female ovipositing on the leaves of a slender vine some 
years ago near Coalburg. In 1873 we made notes and descrip- 
tions of the egg and larval stages of this insect as found around 
St. Louis, where Aristolochia serpentaria and A. sipho are very 
Fic. 1.—Papilio philenor (alter Riley). 
rare, and where the commoner species in the woods upon which 
the larva feeds is A. tomentosa. This species is so unlike the 
others that a non-botanist would scarcely, at first, suppose it to 
belong to the same genus, and it is probably the vine referred to 
by Mr. Edwards, and which he neglected to determine. As bear- 
ing on the generic value of Hiibner’s Laértias, the early stages 
of Philenor are very interesting, approaching as it does Orni- 
thoptera, The eggs show really no difference in sculpture from 
those of the other N. A. Papilios, the great difference in appear- 
ance being caused by a gummy coating. We found them during 
the month of July, on Aristolochia tomentosa, in patches of 16-20, 
1 . . 
Laértias Hiibn., as proposed by Scudder. 
