MEMOIES OF THE NATIONAL ACADEMY OF SCIENCES. 
147 
Lo^lwdonia Pack., Proc. Eiit. Soc. Phil., iii, p. 358, 
Groto, Check List N. Amer. Moths, p. 19, 1882. 
Smith, List Lep. Bor. Amer., p. 30,1891. 
Kirhy, Syn. Cat, Lep. Ilet., i, p. 601, 1892. 
Lophodonta aiul rheoaut iu part, Neiun. aud Dyar, Traus. Amer. Eut. Soc., xxi, p. 196, June, 1894 ; Jonrn. N. Y. 
Eut. Soc., ii, p. 115, Sejjt., 1894. 
Head larj^er than iu iN'otodouta, with the front pilose iu 5 , the liairs passing a little beyond 
the front. The auteunie are more broadly iicetinated thau iu Notodouta, but iu the $ simple, 
though densely ciliated. The eyes are naked. The thorax is slightly crested iu front, with a 
posterior low median tuft of pale blue and black metallic scales. 
Fore -wings more triangular than usual; the costa straight, apex produced, though rounded 
at the tip; internal edge nearly straight, tufted much as iu Xotodouta. Venation: Very similar 
to that of Xotodouta (V. hasitriens\ there being no subcostal cell, only dilfering iu the second and 
third subcostal venules, originating very near each other; venation of the hind wings the same 
as in Xotodouta, Hind wings with the costa straight; the outer margin uuicli shorter than iu 
Xotodouta. 
Although the larva is so dilferent from th.at of Xotodouta, the adult is very similar, difteriug 
chiefly iu the longer palpi aud the longer branches of the antenme. 
Coloration much as in Xotodouta, with transverse waved lines ou the fore wings. Our 
species are congeneric with Notodonia dromedaria Europe, L.femiginea resemhliug it closely 
in markings and colors. I fliid that the European Feridea trejjida Esp. tremula (S. V., Hiibii.) 
has the same venation, with no subcostal cell, as our thi*ee species of Lophodonta, and when the 
European genera undergo the necessary revision the genus Lophodonta may have to be dropx^ed 
for Stephen’s Peridea. 
Egg. — Hemispherical, rather high; shell fiuely pitted, with microscopic, dense, crowded 
granulations; no polygonal areas. 
Larva . — Body much as iu Xadata, but the head is smaller and it has no such siiraual plate, 
this being small and rounded at the end, while the body is smooth, the skin not granulated. 
From Xotodouta it differs iu the body being noctuiform, not humped. A faint double median 
dorsal hue aud a lateral line; the whole body pea-greeu. Sx)ins no cocoon. When young the 
caterpillars, according to Hyar, rest on a perch. 
Fu])a . — Body full and plump, the end of the abdomen very much rounded and obtuse, with 
no distinct cremaster. 
Qeograiyhiccd distrihation . — So far as is yet known, this genus is coiifiued to the Appalachian 
subprovince and to western Euroj^e, 
SYNOPSIS OF THE SPECIES. 
Mouse-gray, with no reddish median hand on the fore wings; extradiscal line not sinuous L. angtilosa 
Brick-reddish; a hroad median hrick-red hand ou fore wings; extradiscal line sinuous L. ferruginea 
Ash-gray; hase of fore wings within the extrahasilar scalloped line rusty hrowu L, hasitriens 
Lophodonta angulosa (Ahhot and Smith). 
(Plato IV, dg. 3.) 
rhalwna angidosa Ahhot and Smith, Kat. Hist. Lep. Ins. Georgia, p. 165, Tab. LXXXIII, 1797. 
Notodonta angulosa Walk., Cat. Lep. Het. Br. Mus., v, p. 999, 1855. 
Morris, Synopsis Lep. N. Amer., p. 239, 1862. 
Lox)hodonta angulosa Pack., Proo. Ent. Soc. Phil., iii, p. 358, 1864. 
Grote, Check List, N. Amer. Moths, p. 19, 1S82. 
Smith, List Lep. Bor. Amer., p. 30, 1891. 
Kirby, Syn. Cat. Lep. Het., i,p. 601, 1892. 
Neum. and Dyar, Trails, Amer. Eut. Soc., xsi, p. 196, Juno, 1894; Jonrn. N. Y. Ent., 
Soc., ii, p. 115, Sept., 1894. 
Larva. 
(PL XVII, fig. 5.) 
Tigar, Proc. Bost. Soc. Nat. Hist., xxvi, p. 162, 1894. 
Moth . — Two 5 . Body and wings mouse or ash-gray, with no brick-reddish scales except ou 
the lines. Thorax mouse-gray, behind the middle a rounded subtriangular area iuclovsiiig paler 
tawny scales, and bordered with steel-blue scales. Fore wings with a basal augulated line bent 
