154 Journal New York Ent. Soc. [Vol, ii. 



H. rileyana Harvey. 



1874 — Heteropacha rileyana Harvey, Bull. Buff. Soc, Vol. I, p. 262. 



Gray ; median space blackish, secondaries brownish. T. a. 

 and t. p. lines obscure, whitish, sub-dentate, defined by blackish 

 scales. A sub-terminal row of venular dots; fringe black spotted. 

 Expanse, 27 — 32 mm. 



Habitat, Mississippi Valley. 



[The description by Harvey of the venation of secondaries is 

 erroneous.] 



Sub-family Lasiocampin.*. 



Genus Clisiocampa Curtis. 

 1828 — Clisiocampa Curtis, Brit. Ent., Vol. V, pi. 229. 

 Synopsis of species. 



Sexes concolorous or nearly so; wings crossed by a pair of darker lines, 

 rarely obsolete, not dentate, or by a broad brown band, 



disstria race erosa. 

 Sexes concolorous or not; the wings crossed by paler lines except when 

 the ground color is pale. 

 Sexes alike; wings cliocolate brown with straight white bands, americana. 

 .Sexes alike or the (;fpale; wings gray or chocolate brown, rarely 



luteous; bands often denticulate .... fragilis. 

 Sexes discolorous, the 9 normally paler than the (j", but (^ some- 

 times also pale; lines dark in the pale forms, more or 

 less denticulate pluvialis, californica, ambisimilis. 



Sexes discolorous ; c^ ^'ery pale, 9 dark, but both with darker lines on 



fore wings COnstricta. 



C. disstria Eilhucr. 



\%i2l - Matacosoma disstria Hi'iBNER, Verz. bek. Schmelt., p. 122. 



1868 -Bombyx ilmpacearum Jioi?,\y\3\M., Ann.Eut.Soc.Belg., Vol. XII, p.82. 



var. sylvatica Harris. 



1841 — Clisiocampa sylvatica Harris, Rep. Ins. Mass., p. 271. 

 var. thoracicoides N'eunuvgen 6^ Dyar. 



1893 — Clisiocampa disstria var. thoracicoides Neumcegen & Dvar, Journ. 



N. Y. Ent. Soc , Vol. I, p. 30. 

 Light yellowish brown, the 9 paler ; fore wings crossed by 

 two dark brown bands. In the var. sylvatica, the space between 

 these bands is uniformly filled in with brown, and in the var. 

 thoracicoides, the bands are very obscure. ■ A form with irrorate 

 wings and dark secondaries occurs in Texas. Expanse, 18— 40mm. 

 Habitat, Atlantic States to Mississippi Valley. 



