4 louRNAL 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 vv-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. 



i'?>b\—PhUarclia F.ackakd, I'loc. Ent. Soc. riiil., Vol. Ill, p. 109. 

 Synopsis of species. 



Size laroe; primaries brown. .....•• nyperborea. 



Smaller, jirimaries black. 



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



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



P. hyperborea Curtis. 



1S35 — Etiprepia liyperboreiis CUKTIS, Ross, 2nd Voy. App., p. 271. 



1850 — .Arctia parthenos Harris, Ajjassiz Lake Sup., p. 390. 



i860 — Arctia horealis Moscin kr, Wiener Ijit. M^nat , Vol IV, p. 360. 

 Fore wings dark brown with l)lackish shade. Several small 

 white spots, especiallv 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. E.xpanse, 70 mm. 



Habitat, Mountains of New England northward. 



P. yarrowi Stretch. 



1874 — .-//r//V? iwvoTC'/ SruKiCH, Zyg-. and I'.omb. N. A., Vol. I, p. ■2?.\\ 

 1S93 — Bean, I'syclie, \o\. \I, p. .S23. 



var. remissa //)•. Edwards. 



1888 — Aiclia remissa Hv. Kdwarus, luit. .\mer., Vol. ITT, p. 184. 



Primaries black ; three scpiare 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. Secondarii's black at base, red 

 outwardly, with rounded black submarginal and discal spots. 

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



J/abitat, Rocky Moimtain region of Canada to Hudson's Bay, 

 Arizona, Wyoming, Vancouver Is , B. C. 



