NYMPH ALIDiE. 
241 
secure four perfect insects. The parasite is undoubtedly the most 
serious obstacle to the successful rearing of butterflies', and one must 
be constantly on the watch or his labors may count for naught. 
Limenitis disippus. Female. 
This Limenitis is the most common species of the genus in the 
east, and maybe seen in June about willows or poplars, on which the 
larvae feed. Although most of the last brood of larvae hibernate over 
winter in their silk lined tubes, or cases, at the ends of the twigs, a 
good many complete their transformations in the late summer and 
fall of the year, and the perfect insects may be taken in September. 
The tiny green eggs, covered with a network pattern, are deposited 
singly by the female near the tips of the leaves. The young larvae 
are almost black, but when nearly full grown assume almost the exact 
shape and color of Limenitis Ursula. The chrysalis is also very simi¬ 
lar to that species. The butterfly is not wary nor a rapid flyer, and 
may be easily taken. It usually frequents the edges of lines of 
bushes along rivers and brooks, and sometimes alights in the roads 
with other species of butterflies. This insect inhabits the whole of 
the United States. 
Another butterfly, much resembling the preceding in shape and 
markings, but of a mahogany color in place of the reddish orange of 
the other species, is Limenitis eros. The black borders of the wings 
