Sept., I9I3-] Forbes: Table of Species of Hadena. 179 



AN ARTIFICIAL TABLE OF THE SPECIES OF 



HADENA, ETC., OF EASTERN NORTH 



AMERICA, NORTH OF THE 



CAROLINAS. 



By Wm. T. M. Forbes, 

 Worcester, Mass. 



The species included in this table are those usually put in Hadena^ 

 with the genera Helotropha, Trachea, etc., which are not readily sepa- 

 rable from it. Some have been placed in Eustrotia, Chytonix, Trachea, 

 Dipterygia, Hadenella, Orthosia, Dryohota and Macronoctiia, as well 

 as the genera Lupei'ina, Xylophasia, Parastichtis (of Hamp., but not 

 of Sm.), Eumichtis, Oligia (Hamp., but not Sm.), etc., which are 

 usually considered subgenera of Hadena; but all are closely related 

 to the Hadenas as commonly understood, or else commonly placed 

 among them. 



The group may be defined as normally trifid Noctuidae, — with vein 

 M.^ (5 of the German system) a little stronger in some specimens of 

 palliatricula, etc., causing them to be sought among the Intermediids. 

 The vestiture is usually mixed, never of simple hair and untufted, but 

 often overlaid with rough hair, especially in the arctic species, and 

 never of simple scales, but with the scales only a little lengthened in 

 hausta and exhausta. The eyes are naked, and may be lightly, but 

 never strongly, lashed. The thorax usually has a slight median crest 

 in the more hairy forms, but the crest is never prominent and its dis- 

 tinctness depends on the position of the patagias and tegulas. More 

 often the thorax is roughly clothed with more or less divided crests, 

 the appearance again depending largely on the position of the patagise 

 and tegulae, and the condition of the specimen. The antennae are 

 variable, pectinate in male illocata, rarely serrate, ciliate or fasciculate 

 in the majority of forms, but simple and deeply prismatic in a few of 

 the species related to miselioides. In the female they are always 

 simple, so that this character is often useless for identification. The 

 palpi are upturned but often with the third joint porrect, rarely reach- 

 ing the vertex, the second joint mostly rough-scaled below. The 

 tongue is developed, the eyes large except in includens, the front 



