1866.] 45 [Packard. 



specimen. This line also contracts on the inner edge. The outer- 

 line is irregularly scalloped, but is straight on the costa, with a sub- 

 acute curved angle on the lower subcostal nervule, below which is a 

 broad, regular sinus, rounded out, terminating in the middle of the 

 first median space, but not nearly upon, or jus^t below the first median 

 nervure, as in the English specimen. Below, the line is regularly 

 scalloped between the nervules. Beyond, the submarginal line is 

 much more dusky than in the English moth, with two faint rows of 

 white strigse on the nervules, with a distinct white submarginal line, 

 and a black, linear, scalloped line ; fringe dusky. 



The hind wings are crossed by two distinct, but rather diffuse 

 dusky submarginal lines, which are more distinct beneath, and do not 

 appear in the English specimen. Beneath, it is more dusky than in 

 the specimen from England, with the outer line on the fore wing dif- 

 fering from the European moth as described above. 



Length .55 ; fore wing .80 inch. 



Caribou Island, Straits of Belle Isle. 



Larentia polata Boisd. " Phaesyle polaria Boisd." Christoph, 1. c. 

 1858. p. 313. 



Seventy-five specimens were captured in a single day on a naked, 

 almost bare rock at Table Island in Henley Harbor, which is much ex- 

 posed to the open sea. They were in great abundance, settling down 

 with their peculiar vacillating flight, like feathers on the ground. 



There was considerable variation among them; some were more 

 dusky than others, with a greater profusion of golden scales ; in 

 others the central dark band of ringlets became reduced to mere 

 points on the inner edge, with the region on each side very pale, and 

 almost entirely free from yellow scales ; or the entire line may consist 

 of points alone, accompanied by a broad, dusky, submarginal band. 

 Others have no yellow scales at all, and the mesial band is diaphanous, 

 leaving the discal dot very distinct, while all the characteristic bands 

 and rows of dots are brought out in very clear relief, as in Lefebvre's 

 var. Brullei. The size of the dusky spots on the fringe varies greatly. 



Hopedale, Indian Harbor, Henley Harbor and Caribou Island, Au- 

 gust. It is a truly arctic species, being found in Greenland and Lap- 

 land, and the colder exposed portions of the Labrador coast. Were 

 it not for the broadly pectinated antenna represented in Curtis's figure 

 12, PI. A. of Ross's Voyage, Appendix, I should refer this (Psycppliora 

 Sabinii Curt.) to L. polata. 



Larentia gelata Guenee, Lep. PI. 14, fig. 6, may prove to be a 

 variety of L. polata. 



Dr. Staudinger says that the genuine L. polata is found in Lapland, 

 while the Labrador form is the var. Brullei. 



