MEMOIES OF THE NATIONAL ACADEMY OF SCIENCES. 147 



Lophodonta Pack., Proc. Ent. Soc. Phil., iii, p. 358, 1864. 



Gi-ote, Check List N. Amer. Moths, p. 19, 1882. 



Smith, List Lep. Bor. Amer., p. 30,1891. 



Kirby, Syn.Cat. Lep. Het., i, p. 601, 1892. 

 Luphvdoiila and I'heosia in part, Neum. and Dyar, Trans. Amer. Eut. Soc., xxi. p. 196, June, 1894; Journ. N. Y.. 



Eut. Soc, ii, p. 115, Sept., 1894. 



Head larger than in Notodonta, with the front pilo.se in c5 , the hair.s passing a little beyond 

 the front. The autennie are more broadly pectinated than in Notodonta, hut in the 9 simple, 

 though densely ciliated. The eyes .ire naked. The thorax is slightly crested in 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 in Notodonta. Venation: Very similar 

 to that of Notodonta (N. hasiiriens), there being no subcostal cell, only differing in the second and 

 third subcostal venules, originating very near each other; venation of the hind wings the same 

 as in Notodonta. Hind wings with the costa straight; the outer margin much shorter than in 

 Notodonta. 



Although the larva is so different from that of Notodonta, the adult is very similar, differing 

 chiefly in the longer palpi and the longer branches of the antenna-. 



Coloration much as in Notodonta, with transverse waved lines on the fore wings. Our 

 species are congeneric with Notodonta (Iroiitedttrla of Europe, L. fcn-uf/inea resembling it closely 

 in markings and colors. I find that the European Feridea trepida Esp. tremula (S. V., Hiibu.) 

 has the same venation, with no subcostal cell, as our three species of Lophodonta, and when the 

 European genera undergo the necessary revision the genus Lophodonta may have to be dropped 

 for Stephen's Peridea. 



Egg. — Hemispherical, rather high; shell finely pitted, with microscopic, dense, crowded 

 granulations; no polygonal areas. 



Larva. — Body much as in Nadata, but the head is smaller and it has no such suranal iilate, 

 this being small and rounded at tlie end, while the body is smooth, the skin not granulated. 

 From Notodonta it differs in the body being noctuiform, not humped. A faint double median 

 dorsal line and a lateral line; the whole body peagreen. Spins no cocoon. "When young the 

 caterpillars, according to Dyar, rest on a perch. 



Pupa. — Body full and plump, the end of the abdomen very much rounded and obtuse, with 

 no distinct cremaster. 



Geographical distributlnn. — So far as is yet known, this genus is confined to the Appalachian 

 subproviuce and to western Europe. 



.SYNOPSl.S OF THE SPECIES. 



Mouse-gray, with no reddish medi.nu band on the fore wings; extradiscal line not sinuous L. anqiilosa 



Brick-reddish; a broad median brick-red baud on fore wings; extradiscal lino sinuous L. ferriujinea 



Ash-gray ; base of fore wings witliin the extrabasilar sca,lloped lino rusty brown L. hasitriens 



Lophodonta aiigulosa (Abbot and Smith). 



(Plate IV, fig. 3.) 



rhalwna aiigulosti Abbot and Smith, Nat. Hist. Lep. Ins. Georgia, p. 165, Tab. LXXXIII, 1797. 

 yotodonta aiiijulusa Walk., Cat. Lep. Het. Br. Mus., v, p. 999, 1855. 

 Morris, Synopsis Lep. N. Amer., p. 239, 1862. 

 Lophodonta aiiijiilosa I'aek., Proc. Ent. Soc. Phil., iii, p. 3.58, 1864. 



Grote, Check List. N. Amer. Moths, p. 19, 1S82. 



Smith, List Lep. Bor. Amer., p. 30, 1891. 



Kirby, Syu. Cat. Lep. Het., i, p. 601, 1892. 



Neum. and Dyar, Traus. Amer. Eut. Soc, xxi, p. 196, .Juno, 1894; .louru. N. Y. Ent.. 



Soc, ii, p. 115, Sept., 1894. 



Larva. 

 (PI. XVII, fig. 5.) 

 Dyar, Proc. Host. Soc. Nat. Hist., xxvi, p. 162, 1894. 



Moth. — Two 9 . Body and wings mouse or ash-gray, with no brick-reddish scales except on 

 the lines. Thorax mouse-gray, behind the middle a rounded subtriangular area inclosing paler 

 tawny scales, and bordered with steel-blue scales. Fore wings with a basal angulated line bent 



