June, I902.] DyAR : SUBDIVISION OF THE GeNUS PlUSIA. 81 



I follow Hampson in designating chrysifis as the type. Agrapha 

 Hiibn., oi which cerea may be considered type, and Diachrysia Hiibn., 

 are synonyms. Diachrysia contains eight species in Hiibner's work, 

 but they appear congeneric and orichalcea Fab. , the second species 

 mentioned, may be regarded as the type. Four American species are 

 referable here. 



Genus Autographa HUbu. 



Hijbner, Verz. bek. Schmett., 251, 1816. Type ^-"///Az Guen. 



"Die Schwingen mit goldenen oder sibernen Schriftzeichen 

 geziert und metallisch glanzend gefarbt." 



Thirteen species are mentioned. The first species, parilis, is not 

 congeneric with the others. Therefore I have taken the second species 

 as type, circiimflexa Hiibn., (nee Linn.) = gittta Guen., a species prac- 

 tically identical with the American simplex. Under this restriction 

 Chrysodeixia Hiibn., type chalcites Esp., is synonymous. Chrysas- 

 pidia Hiibn. may be likewise referred here. The majority of the 

 American Plusias fall in this genus. 



P. abrota Druce, described from Mexico, but now recorded from 



Florida, falls here. It differs in the enormously developed abdominal 



hairs ; but these are not improbably a secondary sexual character of 



the male. Brassicx has remarkably developed lateral tufts in the 



male and verruca and oxygramma have smaller ones. In the other 



species this character is not marked. Snmoi, sackeni and diasema 



have yellow secondaries, but agree in the shape of the eyes with this 



genus. 



Genus Euchalcia Hiibn. 



Hiibner, Verz. bek. Schmett., 251, 1816. Type ilhtstris Fab. 

 " Die Schwingen mit blassen Zeichnen bemerkt, erbunt gefarbt." 

 Hiibner mentions three species, of which the first, illiistris Fab., 

 may be considered the type. The European festucce may be referred 

 here also. The allied American forms, contexta, pittnami and stria- 

 tella will come here and Deva omata Ottol., also. This latter has the 

 aspect of a Basi bodes, but lacks the frontal tubercle. It does not 

 seem structurally different from Eiiclialcia. 



Genus Syngrapha Hiibn. 

 Hiibner, Verz. bek. Schmett., 250, 1816. 'Yy^ie iwchemuarf hi Yioch.. 

 " Die Schwingen mit metallglanzenweisen Schriftzeichen bemerkt, 

 die Senken gelb gefarbt." 



