MEMOIRS OF THE NATIONAL ACADEMY OF SCIENCES. 
193 
On a careful revision of the generic characters of CEdeinasia I do not iiiid any of sufficient 
value to separate it from Schiznra. ffl. concmna has all the adult characters of Schizura except 
the style of coloration; the palpi of this species do not seem to be generically difitereut from those 
of the sj^ecies usually referred to Schizura. An examination of the figures illustrating the 
venation of S. ipomece and concinna will show a general agreement in the plan of venation. 
When we come to the larval characteristics it woxdd seem unreasonable to unite such a 
peculiar species of larv^a as that of concinna with the species of Schizura as formerly limited by 
,us; but the same difficulty is met with in Hetei'ocamixa. CEdeinasia might be retained as a 
subgeuus or section of Schizura, but at ixreseiit it seems best to at least unite the two genera. 
Undoubtedly the old genus CEdeinasia is partially evolv^ed, and to some it may seem best on 
account of its larval characters to retain it as a distinct genus. Before this is done, however, 
we need more exact knowledge of the larval histories of the subfamily. At all events, the 
differences which separate the adult 8, concmna from the otlier species of Schizura are not at all 
so marked as those which separate the other genera of the family as we have defined them. 
Egg , — Hemispherical, the surface marlved with microscopic ixolygonal areas, becoming 
obsolete toward the apex, so that it is smooth. 
Larva , — Head and body somewhat compressed, head high, narrow, not so wide as the body. 
The eighth to tenth abdominal segments uplifted, with rather long and slender anal legs, a high 
nutant, slightly eversible, forked dorsal tubercle on the first abdominal segment; two liigh twin 
fleshy tubercles on fifth abdominal segment, not quite so large as similar ones on the eighth 
segment. Colors green on sides of the thoracic segments; the rest of the body russet, with fine, 
irregular, reddish lines, and a characteristic silvery white dorsal V-shaped mark in front of the 
last tubercle. In 8, concmna the entire first abdominal segment is swollen and red, while the 
piliferous warts are converted into long, solid, black, stout, blunt spines. 
Freshly hatched larva, — Head very large, rounded; body studded with hu'ge pilifei'ous conical 
dorsal warts, those on the prothoracic segments as large as those on the first and eighth 
abdominal segments, and those on the other segments large and well developed. 
The glandular hairs long and bulbous at the tips. Body i>ale greenish yellow, with a pale 
reddish band around the prothoracic and first, third, and eighth abdominal segments. 
Cocoon . — A regularly oval earthen or thin silken web, with bits of leaves, etc., on the outside. 
Piiim . — Moderately stout, end of abdomen obtuse; the cremaster with the spine deeply cleft, 
each fork well developed, rather long, not much flattened, ending in a point and throwing off 
nefir the end a short branch which nearly meets its fellow on the opposite fork. 
Geographical distribution , — The species range throughout the Ai>palachian, Gampestrian, and 
Austroriparian snbprovinces, but are most numerous in the Appalachian and Austroripariau 
.subprovinces. . No species have yet been found in Mexico. 
SYNOPSIS OF THE SPECIES. 
A. Discul spot linear. Transverse lines more or less distinct. 
Fore wings with pointed apex; more or less distinct transverse lines; a linear dark discal spot inclosed 
in a pale patch; no reddish brown markings; largest species of the genus S. ix^omecG 
No transverse lines; linear spot distinct; fore Aviugs pointed at apex, whitish frosty gray, with no reddish 
or brown lines and shades, except a faint extradiseal line; a hollow black low triangular mark on end 
of thorax S, teytlnoUhs 
Size of markings of unicornis] fore wings ^iioro i)ointed; light brown with whitish scales, no greenish 
yellow scales; crosslines distinct; huiato discal mark very distinct S. apicalia 
Fore Avings siiuarish at apex ; markings white, reddish, black and broAvn, distinct, and cro.ss lines distinct, 
the middle and extradiscal lines consisting of reddish brown lunules; two black subapieal slashes, a 
short AA'bito lougitndinal streak in the second median interspace S. unicornis 
Shape of uniconiifty Aviugs slightly broader, thorax A’ery dark brown, fore wings reddish, and a broad 
longitudinal reddish shade beyond the distinct linear discal mark S. hadia 
Fore wings grayish white, with a faAvn-colored shade along internal margin S.pcranyulnta 
B. Discal spot, a small round black dot; no transverse lines. 
Closely resembling co7ici«na, but larger, and fore Avings inncli more produced toward apex; oblique 
dark costal bands S, eximia 
Fore wings squarish at apex ; taAvny ashen, with reddish brown patches; thorax jialeash; notransverso 
lines, and costal hands obsolete S. concinna 
S. Mis. 50 13 
