\' 



4 Journal New York Ent. Soc. [Voi. ii. 



Black ; collar and end of abdomen reddish flesh color. Fore 

 wings with sub-basal and transverse posterior bands, a rounded, 

 triangular costal spot, and occasionally a terminal w-mark of 

 same color. W-mark irregular, often absent. Secondaries pale 

 red, with median and ou terrow of confluent black spots, the median 

 sometimes wanting. Expanse, 35 mm. 



Habitat, Colorado. 



Genus Platarctia Packard. 

 1864 — Platarctia Packard, I'roc. Ent. Soc. Phil., Vol. Ill, p. 109. 



Sytiopsis of species. 



Size large; primaries brown. ....... hyperborea. 



Smaller, primaries black. 



Markings lemon yellow; basal half of secondaries black . . yarrowi. 



Markings bufT ; secondaries black only at base . . . var. remissa. 



P. hyperborea Curtis. 



1835 — Eiiprcpia hyperboreus Curtis, Ross, 2nd Voy. App., p. 271. 



1850 — Arciia parthenos Harris, Agassiz Lake Sup,, p. 390. 



i860 — Arctia borealis Moschi.er, Wiener Ent. Monat , Vol. IV, p. 360. 

 Fore wings dark brown with blackish shade. Several small 

 white spots, especially along costa and submedian fold, represent- 

 ing the usual bands. Secondaries ocher yellow, sub-median band 

 and discal spot connected by rays with a large basal black patch. 

 Abdomen black with ocher yellow tip; collar red behind, patagia 

 white-lined. Expanse, 70 mm. 



Habitat, Mountains of New England northward. 



P. yarrowi Stretch. 



1874 — Arctia yarrowi STRETCH, Zyg. and Eomb. N. A., Vol. I, p. 221; 

 1893 — Bean, Psyche, Vol. VI, p. ^23. 



var, remissa Hy. Edwards. 



1888 — .4rctia remissa Hv. EDWARDS, Ent. Amer., Vol. Ill, p. 184. 



Primaries black ; three square yellow patches on costa, and 

 three similar ones on internal margin ; a transverse band from 

 costa to internal angle and an angular subapical mark, which are 

 traces of the broken up w-mark. Secondaries black at base, red 

 outwardly, with rounded black submarginal and discal spots. 

 Body black, red at tip. Expanse, 44 mm. 



Habitat, Rocky Mountain region of Canada to Hudson's Bay, 

 Arizona, Wyoming, Vancouver Is , B. C. 



