LIMENITIS I. 
shorter of which is perpendicular to the other; the mesonotum moderately prom- 
ment, with a slight, blunt carination at summit, and a small conical tubercle on 
cither side; on the middle of dorsum is a prominent, rounded, thin-edged appen¬ 
dage, corrugated, especially at base ; color of wing-cases and anterior parts silverv- 
gray, the former tinged with brown, or pale black along their hind margins • 
there is some variation in the color of the wing-cases, from a lighter to darker 
shade, and the posterior part ol the head-case is somewhat iridescent; dorsal side 
of abdomen yellow-white, towards extremity gray; on the ventral’side almost 
wholly gray and brown; the dorsal appendage dark smoky-brown ; at base of 
this is a dark brown demi-band, crossing three segments; the surface of the seg¬ 
ment next before and next after the appendage, as well as between it and the 
wing-cases, silvery and corrugated. (Figs. g, g\) Duration of this stage nine to 
ten davs. 
This species, mostly in the form Lamina , inhabits the northern parts of the 
continent, east of the Rocky Mountains, and as far to the southward as the 
Iioosac Mountains of western Massachusetts, the Catskills of New York, south¬ 
ern Michigan and Wisconsin; to the eastward, as far at least as the St. Law¬ 
rence ; also Nova Scotia and Newfoundland. The form Proserpina is limited to 
special localities or districts in the southern area of the species. In the Cats¬ 
kills the two are always found associating together, but the black is much less 
numerous than the other, the proportion apparently being about as one to ten. 
1 lr * Mead ’ writm g of his experience in these mountains, says: “ When I collected 
every Proserpina I could find, I took 110. Of Artliemis I actually did take 
a lout 200, and could have taken a thousand without any difficulty.” My own 
collecting there during several seasons shows substantially the same results. But 
m the Adirondacks ol northern New York, where Artliemis abounds, Mr. AY. AY 
Hill, m four seasons collecting, has seen no example of Proserpina. So Mr. A.’ 
L. Crraef states that he found Artliemis abundant in the Adirondacks, but saw no 
Proserpina. 
Professor S. H. Peabody writes that he collected in the Iioosac Mountains the 
last week of June, 1873, and Artliemis was abundant. In 1875, was in Vermont 
the middle of July, and walked up the western slope of Mt. Mansfield, the highest 
of the (rreen Mountain range. He found Artliemis plenty, but neither there nor 
in Massachusetts has he seen Proserpina, and does not know of the latter havino- 
ever been taken in Vermont. Mr. C. H. Roberts, of Factory Point, southern 
Vermont, says u Artliemis is found abundantly in this region, and I have taken 
it in several counties of this State. I have collected for seven years, and have 
