one al that. In the other groups of this section, ilie transverse Hnes 

 never come below the submedian streak. Tliere are a few species here] 

 and probably a number of others with which I am not acquainted. 



Phyllira is always easily distinguished by the rigidly oblique trans- 

 verse lines, the two outer lines being nearly parallel. The W may be 

 more or less obsolete and so may the inner cross band, but the rigidity 

 of the lines is always traceable. 



Cervinoides is closely allictl, but is smaller. I know it only from 

 Strecker's figure. 



Fignrata is always distinguishable U'om phyl/ira h\ the lack of rigidity 

 m the transverse lines, the outer line being usually somewhat bent in the 

 middle, and the two lines slant in opposite dn-ection=. The W is ni')re 

 usually obsolete in this than in the phvl.'ira form nml thus we get 

 F. pallida Strk. , in which it is wanturg entirely. The secondaries of this 

 species have generallv a broad black margin, never brtiken up as in phvl- 

 lira, and sometimes the secondaries become en'irely l^lack, and thus we 

 get excelsa Neuni. 



Finally is a series of s[)ecies, closely allied in which there is no W 

 but an X be\ond the middle. 



Tliese are celi.i, nais and dc.orala, the two latter at least of which, 

 are forms of the same species, whether the first is, or not, I am not cer- 

 tain — i)erhaps I have mistaken its type. At all events the pattern of 

 maculation is ver\- distinct from that of the other species. I have no idea 

 that the interval between this and \.\\c fhyllira series can be briiiged. There 

 is a sharply defined sexual dilTerence in color and wing form in mis and 

 the secondaries also vary considerably in maculation. Sometimes it is 

 spotted onl\- — generallv in the males — at others there isa wideblack margin, 

 often taking up half the wing — this is the tendency in the 9> ^^hich is 

 also as a rule much redder than the (^. On the primaries the tendency 

 is to an c^bliteratit^n of the outer x and attendant marks, leaving only the 

 submedian stripe— and this variation is the only one shown by the species. 



The other species I do not know sufficiently to care about discussing 

 them. I will again finally declaim the idea of making critical notes on 

 the genus as a whole. ^ly only idea is to call attention to some charac- 

 ters which do not seem to have been sufficiently emphasized heretofore, 

 and to express my conviction that the species o{ Arclia are not nearly so 

 variable as has been supposed and that every good species is capable of 

 accurate definition. A goodly number of species have been described 

 from single, somewhat aberrant examples, and the names hang on in the 

 lists, though the species may have been recognized as synonyms long 

 since — especially is that true of the atithcola group, in which Mr. Neu- 

 moegen has done some judicious lumping recentl}'. 



