March 1894.] NeUMCEGEN & DVAR. N. A. BOMBYCES. 13 



Thorax with normal maculation or entirely black (var. neva- 

 densis). Median vein not pale lined, the longitudinal line and all 

 the transverse bands present. The lines vary much in width, but 

 have a greater tendency to be narrow than mproxima. Secondaries 

 pink in the cf, rarely yellow (var. sulphiirica), red in the $ with 

 double marginal and one to three discal dots, the latter rarely produ- 

 ced towards the base. Abdomen pmk or ocher, the dorsal and lateral 

 spots moderate, even throughout, not different on the terminal 

 segments. Expanse, 30 — 35 mm. 



Habitat, Rocky Mountain region west to the Pacific. 



E. superba Stretch. 



1874 — Arctia supeiba SrRETCif, Zyg. and Bomb. N. A., p. 227. 



1878 — Arciia geneiiia Sirecker, Pioc. Dav. Acad. Sc, Vol. II, p. 270. 



Lines, as in blakei, but narrow and partly broken. Secondaries 

 deep red but in some specimens much like blakei. 

 Habitat, Colorado, British Columbia. 



E. favorita Neu/nage/i. 



1890 — Arctia favoiila Neum(EGEN, Ent. Amer. , Vol. VI, p. 173. 



Like blakei, but line i absent, or but a trace left. Primaries 

 black, but looking slightly brownish. Lines broad, confluent or 

 normal, or all absent but lines 3 and 4. This form differs from 

 williamsii only in being more black, and having the secondaries 

 redder. It is very close to superba. 



Habitat, Rocky Mountain region. 



E. williamsii Dodge. 



1871 — Aiciia 7oi/liaiiisii DoDGE, Can. Ent., Vol. Ill, p. 167. 



var. determinata Neui/urgen. 



1881 — Arctia determinata NEUMa:GEN, Pap., Vol. I, p. 28. 

 1890 — Arctia dieckii NEUxra:GEN, Ent. Amer., Vol. VI, p. 62. 

 Primaries brown with black shades ; secondaries dark red 

 inclining to pinkish. On primaries, the longitudinal band and w- 

 mark with one or two other bands. In the var. determinata two 

 bands are present, the 3rd and 4th. 

 Habitat, Rocky Mountain region. 



E. phyllira Drury. 



1773 — Calliinorpha phyllira DuURY, HI. Ex. Ent., Vol. I, pi. 7, f. 2. 

 1781 — Geometra B-ata GcEZE, Ent. Betyr., Vol. Ill (3), p. 42S. 

 1797 — Bomhyx plantagina Martyn, Psyche, pi. 15, ff. 36-7. 

 \%'ii— Arctia doiigei Butler, Ent. Mo. Mag., Vol. XVIII, p. 136. 



