MEMOIES OF THE NATIONAL ACADEMY OF SCIENCES. 155 



Lopliopteri/.r Staiuliuger, Cat. Lpj). Eur., p. 73, 1871. 



Grote, New Check List N. Aiiier. Moths, p. 18, 1882. 



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



Kirby, Syn. Cat. Lep. Het., i, p. GO."), 1892. 

 Kolinlotiiu. (in part) and Lophojitrriix 'Nemu. and Dyar, Trans. Amer. Ent. Soc, xxi, pp. ISi, 196, .June, 1891: 

 .lonrn. N. Y. Ent. Soc., ii, pp. 113, 11.5, Sept., 1894. 



]\foih. — Head modeiatcly proiiiiiieiit; front moderately wide, the .scales long and den.se, 

 projecting irregnlai-ly and forming a slight median crest (most marked in L. americana and the 

 European L. camcUna); vertex slightly crested or very moderately so (in the European cucidla 

 and mmdina); \n\\\n varying in not extending bej'ond (eJefjavH) or surpassing the front (cnmeUna, 

 American example), loosely hairy, not very distinct from the front (much larger in camelina than 

 in clajans) ; third joint not very distinct in elegans, but quite so in camelina. Eyes naked in elegans, 

 but in the European camelina and the American example distinctly hairy. AnYenna; in $ with 

 short, stout, ciliated branches; in 9 thick, with more or less rudimentary branches (in clefjans they 

 are slender, but distinct, acute, ciliated, but in the 9 of the two above-named European species 

 the branches are undeveloped). 



Thorax either simple (elef/ans) or somewhat crested, or (as in the European species camelina 

 and the Wisconsin example) witli a high distinct crest, sloping backward and slightly inclined 

 forward. Fore wings with the costa regularly but slightly curved (eler/ans), or straight (in the 

 Eurojjean species camelina, etc.); apex acute, square, outer edge a little bent and scalloped (less 

 distinctly so in c^icnlla); inner edge with a distinct or quite \avge [camelina) tuft. Hind wings 

 triangular, produced toward the apex; internal angle full and marked witli a brown patch 

 {elegans) or with two short parallel lines (in the European species camelina and cveulla). Venation : 

 Fore wings with a short scale; no triangular subco.stal cell; anterior di.scal venule very oldique, 

 directed inward, the hinder ones curved, not oblique; the costal region very narrow in both wings. 



Legs very hairy, ratlier long, hinder pair with a long stout tibial spur arising from the basal 

 third. 



Coloration: The species are wood or reddish graj^, witli hmgitudinal streaks, especially 

 toward the costa, and either with (European species) or without transverse scalloi^ed lines. Hind 

 wings clear whitish, with (in elegans) a dark black patch at the internal angle. 



The species difter from those of Notodonta in the larger tuft on the internal edge of the fore 

 wings, in the more pointed fore wings which are square at the apex, and in the'preseuce of a 

 subcostal cell, as well as in the distinctly scalloped outer edge of the wing. 



The genus is on the whole nearly allied to Pbeosia, as seen in the venation, the shape of the 

 wings, the anterior pair being pointed toward tlie apex, with the outer edge very oblique, and 

 also in the markings, the fore wings in both having (in elegans) no cross lines, and being striped 

 longitudinally with dark browu in the subcostal interspace, and (iu elegans) with a conspicuous 

 bent silvery white stripe extending from the base of the wing along the internal vein. In camelina 

 there are two scalloped cross lines on the fore wings, converg;jug from the costa to the tuft ou 

 the inner edge; there are also no silvery white markings. 



While we unfortunately know nothing of the transformations of our Amei'ican species, those 

 of Europe have been figured and described. The larva of the European L. camelina, whicli I owe 

 to the kindness of Dr. Heylaerts, of Breda, Holland, is characterized by two twin diverging high 

 dorsal papilliie or tubercles ou the eighth abdominal segment, a very interesting feature, since they 

 probably represent what may have been the primitive double nature of the hump or horn of 

 Pheosia and other larvit! with a "caudal horn." Tlie larva is not humped ou any other segment, 

 and the body increases in thickness toward the eighth abdominal segment, as in Pheosia. I 

 should regard, therefore, Loi^hopteryx as the more primitive genus, and standing below Pheosia 

 and above Lophodonta, which has no hump at all. 



Mv. Helliiis says the larva of 7^. camelina spins a cocoon of line silk, covered with line earth, 

 etc. The pupa ends iu a small straight spike, tipped with four diverging tiny sharp points 

 (P.ncklcr's Larva" of British Butterflies and Moths, ii, p. 103). The lawn of L. enculla has on 

 aljdominal segments 3 to 7 sliglitly raised dorsal luimiis, and on segment 8 "a more prominent and 

 sliari)er hump, ending in twin points, which are set with .six hairs. "The larva of i. earmeliia is 



