67 



most of the European specimens were raised. Raised speci- 

 mens differ from collected ones mostly by a smaller size, but 

 even the shape of the wings is different; the wings are shorter 

 in relation to the body, the anterior angles ""more pointed, the 

 indentations of the border deeper and more pointed. Such 

 modifications also change the pattern somewhat, especially the 

 relative situation of the lines and spots. It seems, after alb 

 that only raised specimens should be compared with raised ones, 

 or those caught in the field with caught ones. The very lack 

 of such specimens prevented him from giving a certain opinion 

 upon Taeniocampa incerta. 



There were fifty-one American species compared. 



Twenty are considered identical with European species : 

 Leucania pattens, Agrotis C-nigrum, A. plecta, A. saucia, A. 

 segetum, A. ypsilon, Aplecta prasina, Mamestra trifolii, 

 M. dissimilis, Hadena lateritia, Hydroecia nictitans, Euplexia 

 lucipara, Dipterygia pinastri, Heliothis armigera, ScoUopteryx 

 libatrix, Amphipyra tragopoginis, and four species for which the 

 American habitat is still doubtful : Aporophyla australis, Ma- 

 mestra thalassina, Hadena polyodon, Eremobia oehroleuca. 



Sixteen are considered surely different species : Thyatira 

 scripta, Acronycta occidentalis (psi), A. brumosa Qauricoma), 

 Agrotis obtusa (trianguluni), Mamestra nimbosa (iiebulosd), 31. 

 imbrifera, Hadena lignicolorana (sublustra'), Cucullia asteroides 

 (asteris), C. intermedia (lucifuga), Erastria musculosa (pyg- 

 arga~), Abrostolis urentis (asclepiadis'), Plusia contexta (festu- 

 cae), P. Putnami, Amphipyra pyramido ides {pyramided), Riv- 

 ula prophiqualis ^sericealis'), Brephos infans and var. Hama- 

 dryas (Parthenias). 



Of the others Dr. Speyer has not yet fixed his opinion. He 

 considers as local varieties, till better information is obtained, 

 six: Caradrina miranda (l&pigone), Taeniocampa incerta, Agro- 

 tis augur var. grandis, A. baja, Hadena finitima, Plusia gamma 

 var. Californica. In the same manner he considers as differ- 

 ent species, nine : Caradrina Meskei, Orthosia ferrugineoides, 

 Agrotis clandestina, Mamestra subjuncta, Hadena devastator, 

 Pyrrhia exprimens, Plusia brassicae, Oalpe Canadensis, Sa- 

 rothripus Lintnerana. 



