258 ENTOMOLOGICAL SOCIETY 
of the earth tried in vain to reach their relatives. Late in September, 
1889, a small swarm of these insects was thus detained at the Park, and, 
as the nights were cool, they could be picked up frozen in the morning, 
but they would soon warm up and revive during the day to fly about, 
evidently waiting for an opportunity to escape to a more genial climate. 
Both in the spring of 1888 and 1889, the Danais butterflies were accom- 
panied by the common thistle butterflies (Vanessa cardui). These came 
in as large numbers as the former, going northwards with the opening of 
the flowers of wild plum and cherries. Evidently these butterflies winter 
farther south, as all specimens were denuded of scales, indicating a long 
flight. Other hibernating insects, such as Vanessa antiopa, remain within 
the State. Their wings in spring are simply faded, but not denuded of 
scales. There is but one annual brood in Minnesota. 
Prof. Riley expressed himself as decidedly of the opinion that 
in Danais archippus there is but one annual brood. He de- 
scribed the spring dispersion of the species northward, generally 
by isolated individuals, before the food-plant has appeared above 
ground. He had repeatedly observed these butterflies going 
against the wind in the spring, and always northward or north- 
westward. He believes there is no real foundation for the theory 
of a hibernation in the northern portions of the country. 
In reply to a question, Mr. Lugger stated that these butterflies 
do not move in such regular swarms in the spring as in the fall. 
Dr. R. Thaxter said he had found the Archippus butterflies in 
immense number on the Gulf coast, in winter, generally in the 
pine woods, some groves harboring millions of specimens. He 
had seen them in coitu in both spring and fall, and also in Feb- 
ruary, in Florida. During the winter they seem to feed but little, 
if at' all. 
' Mr. Howard remarked that he had noticed the migration of this 
butterfly in the middle of October, 1889, at Ithaca, N. Y. 
Mr. Lugger found them numerous in Baltimore in October, but 
they were nearly all frozen. 
Mr. Howard read the following paper : 
A FEW ADDITIONS AND CORRECTIONS TO SCUDDER'S NOMENCLATOR 
ZOOLOGICUS. 
By L. O. HOWARD. 
Mr. G. H. Verrall's recent paper on Bigot's orthography, in the Wiener 
Entomologische Zeitung for August, 1889, although of a controversial 
nature, has reminded me, in view of the fact that the names criticised 
