\0'2 ' THE CANADIAN ENTOMOLOGIST. 



Genus Seirarctia Pack. 



1864 — Pack., Proc. Ent. Soc, Phil., III., 119. 

 1873 — Stretch, Zgy. & Bomb., 81. 



Antennae of $ short, with joints marked but scarcely serrate, the sides 

 ciliated. Head moderate in size, closely appHed to the thorax, but not 

 sunken. Tongue obsolete. Palpi short, third joint equal to the second 

 in length, not much exceeding the first ; straight. The eyes are rather 

 large, but not prominent. Ocelli present. Vestiture long and hairy. 

 Legs short, fore-tibise shorter armed with a long claw at tip, middle and 

 posterior tibiae nearly equal in length, each armed with a pair of short 

 terminal spurs only. 



No male has been under examination, and I cannot therefore speak of 

 the characters of that sex. 



Primaries without accessory cell, seven to ten on a stalk out of the 

 end of the subcostal at the same point with six ; ten from nearest to base 

 of stalk to costa ; seven next to outer margin ; eight and nine forking close 

 to tip, the former to apex, the latter to costa ; four and five together from 

 the end of median ; three from median some little distance before the end. 

 Secondaries six and seven together from end of subcostal ; four and five 

 together from end of median ; three some little distance before the end ; 

 eight, as usual, from about the middle of subcostal. 



These studies were all made on a $ , 6". ec/w. • 



S. dio Pack. 



1864 — Pack., Proc. Ent. Soc, Phil, III., 120, Seirarctia. 



1872 — Stretch, Zyg. & Bomb., 82, pi. 3, f. i, Seirarctia. 



1882 — Behr.,* Papilio II., 187, biol. notes. 



Habitat — California. 



Food plant — Apocynum androscenifolium. . 



S. echo Sm. & Abb. 



1797 — Sm. & Abb.*, Ins., Ga , II., 135, pi. 68, Phalcena. 



1 81 6 — Hiibn., Verzeichniss, 184, Estigmene. 



1856— Wlk., C. B. Mus., Lep. Het, HI., 668, Spilosoma. 



i860 — Clenl., Proc. Ac. N. Sci., Phil., XII., 531, Hyphantria. 



1862 — Morris, Synopsis, Supplt., 342, Spilosoma. 



1864 — Pack., Proc. Ent. Soc, Phil., HI., 120, Seirarctia. 



1865- Wlk , C. B. Mus., Lep., Het, XXXII., 352, Hyphantria. 



