NATURAL HISTORY. Ixxi 



were collected on the 16th of June, 1832, near Fury Beach ; the first that was seen in 

 the previous year was on the 19th of June, and several more on the 23d. The cater- 

 pillar is large and hairy, of a beautiful shining velvety black, the hairs being somewhat 

 ochreous, there are two tufts of black hair on the back, followed by two of orange. A 

 great number of them are destroyed by several kinds of flies and ichneumons, one of 

 which is represented at fig. 1 ; but those that arrive at maturity spin a close web, about 

 the size of the silkworm's, and covered outside with its hairs, the pupa is piceous and 

 shining, and the back thickly clothed with long brownish-ochre hairs its whole length ; 

 the moth appears about the beginning of August. The following interesting experi- 

 ments I have transcribed from Commander Ross's MSS. " About thirty of the 

 caterpillars were put into a box in the middle of September, and after being exposed to 

 the severe winter temperature of the next three months, they were brought into a warm 

 cabin, where in less than two hours, every one of them returned to life, and continued 

 for a whole day walking about ; they were again exposed to the air at a temperature of 

 about 40° below zero, and became immediately hard frozen ; in this state they remained 

 a week, and on being brought again into the cabin, only twenty-three came to life ; 

 these were at the end of four hours put out once more into the air, and again 

 hard frozen ; after another week they were brought in, when only eleven were restored 

 to life ; a fourth time they were exposed to the winter temperature, and only two 

 returned to life on being again brought into the cabin ; these two survived the winter, 

 and in May an imperfect Laria was produced from one, and six flies from the other ; 

 both of them formed cocoons, but that which produced the flies was not so perfect as 

 the other." The caterpillar " feeds mostly on the Saxifraga trkuspidata and .*>'. 

 oppositifolia. 



Gen. 820.— EYPREPIA. {Ochs.) 



17. Hi/perboreus. Castaneous brown, superior wings with a spot on the costa, and 

 an interrupted stripe towards the hinder margin cream colour ; inferior win^s with an 

 orange band across the middle, bearing a brown spot ; the margin orange also. 



Expansion one inch eleven lines. 



Male castaneous brown, antennaj black, the rays short ; the superior wings with a 

 cream coloured spot at the middle of the costa, and a waved stripe of the same colour 

 near the posterior margin, nearly divided in the middle ; inferior wings oclireous freckled 

 with scarlet, castaneous brown at the base, an elongated spot at the middle, and 

 a sinuated fascia beyond it of the same colour ; margin of the abdomen, upper side of 



