THE CANADIAN ENTOMOLOGIST. 23 



5th to pupation 14 days. 5th to pupation 10 to 11 days. 



In chrysalis 21 days ( $ ). In chrysalis 19 days ( ^ ). 



No. I was 64 days from ist moult to imago. 

 No. 2 was 65 " " 



No. 3 was 67 " " 



No. 4 was 65 " ■" 



Whereas the period of the larva before spoken of (1873-4) was 102 days 

 from ist moult to imago. The frozen larvae were healthy at all stages, 

 and I lost none after ist moult, except one in chrysalis. 



2. Cybele. 



In Sept., '79, I obtained eggs of Cybele, and 7th Oct., I sent 40 larvae 

 just hatched to Prof. Fernald, to go on ice. Others I retained, and tried in 

 the usual way to carry them through the winter, but in Feb'y I found that 

 these were dead. I received the lot from Orono 3rd March, '80. These 

 were nearly 5 months in the sawdust next the ice in house, as Prof Fer- 

 nald wrote me. Two days after they reached me several were moving 

 about, and I transferred them from the boxes to violet. The stages were : 

 No. I. 2nd stage, 12 days. No. 2. 2nd stage, 10 days. 



3rd " 6 " 

 4th " 7 " 

 5th " 4 " 

 5th moult to pupation 9 daya 

 In chrysalis 16 days. 

 From ist moult to imago 62 dys. 

 No. 3. 2nd stage, 8 days. 

 3rd " 9 " 

 4th " 8 " 

 5th " 8 " 

 5th moult to pupation 12 " 

 In chrysalis 20 ■' 



ist moult to imago 65 " 

 The first butterfly emerged 12th May ( ^ ), 



Here again, as in the case of Diana, above related, the periods were 

 all shortened by the freezing the larvae had undergone, and the larvae 

 were healthier at every stage. In 1874, out of 100 caterpillars of Cybele 

 hatched in fall of '73, I obtained l)ut 3 chrysalids, and from these 2 but- 

 terflies. From ist moult to butterfly was 104 days. 



