G. fngidaria (Gucmk'c's sp.), received from Lapland, (lirougli Dr. Staudingcr, 

 both in size and niarkiiigs, that I am at pre5=eMt (notwithstanding the great 

 amonnt of variation in the species of this genns) inclined to keep the two 

 species separate nntil new material decides the qnestion. 



I\[\' two G. J)ig'i(l<iria are larger than sabiniaria, llie fore wings expand- 

 ing 1 (KJ inei), while my single female sabiniaria expands only 0.95 inch. 

 Giicnee's male e\i)andcd 0.32 inch more, or 1.28 inches. In fiigidaria, 

 the band is much wider on the costathan in sabiniaria, more finely scallo})cd, 

 and there is a discal dot on the hind wings and two outer curved lines. 

 The fringe is whitish, checkered with dark ; while in sabiniaria it is 

 uniformly sable, and not checkered with darker scales. It should be 

 rcmarkcii, however, that Cnrtis's figure represents a dot and two outer curved 

 dusky lines on the hind wings, thus in part connecting the two species, and 

 it is possible tliat they will prove identical. 



Larva. — In a bottle marked \)y Dr. E. Bessels witli the same number 

 (fi) as the pinned moths, and labeled "Polaris Bay, August 2, 1871," is a 

 larva wliieli seems to be of this species. The body is moderately thick, of 

 unifoini size from tlie head to the tail. The liead is smooth, rounded, not 

 so wi(i(! as tlie body. The supra-anal i>late is rounded posteriorly. The 

 body is blackish, -with scattered, rather stout hairs; the tubercles from whicii 

 they ari.se being pale. Tiierc is a dorsal row of peculiar conspicuous square 

 spot.s, one on each ring, and a lateral row of irregular, concolorous, pale dots. 

 Length, 0.55 inch. 



Glaucopteryx piiocAT.\rjA Packard. Plate 8, fiir. 21. 



Cidaria yhucata MiSscblcr, Wieii. Eiit. Jlona'.scli., vi, 9, taf. 1, fig. 6, 1832. 



A^orderfliigel gell)grau, im Mittel- und Saunifeld mit vorherrschendcm 

 Gran, drci dunkle, diclit angelcgic Querstreifen, lichte Wellenlinie und 

 dunkler Miticlpunkt. Ilinteriliigel grau mit dunklem Mittelpunkt. 



Fliigelspannung 27-33 MiUiin. Vordcrfliigelbreitc 7-8 Millim. 



Sleht d(.'r Cidaria frlgidaria Gucn. am nilchstcn, unterscheidet sich 

 jedoch so wcsenllicli von ihr, (hiss an keinc Vereinigung gedacht werden 

 kann. 



Die Fiihler des Mannes siiid gekiinnnt, ihrc Kiimmzahne stehcn wie 

 bci frigidaria ziemlich entfernt von einandcr, siiid ebenfalls behaart, abcr 



