76 THE CANADIAN ENTOMOLOGIST. 



HATCHING LEPIDOPTERA THROUGH ARTHTCIAL HEAT, &c 

 (Continued from page 4g, No. j, 1884.) 



BY PH. FISCHER, BUFFALO, N. V. 



Of the lot taken to the room Dec. 3rd, 1883, imagoes appeared as 

 follows : — 



Hem. tenuis, male, Jan. 16, 1884. H. thysbe, female, Mch. 14 2 



II II " 27 11 11 11 n 30 



Telea poly., n n 27 n D. imdulosa, male, Apr. 8 



Apat. lepusc, n 27 n Sph. drupifer. n n 18 



Telea poly., male, Mch. 10 n H. tenuis, male, fem. n 23 



11 female, h 16 n n n n 26 



Pupae from Feb. i, 1884. Sm. myops n May 9 



H. tenuis hatched i male, Feb. 24 n female n ti 



II 2 females m 26 D. chcerilus, male n 11 



II I male 27 Sm. myops n n 13 



II I II Mch. I II female n 14 



II I female n 3 C. promethea, male n 30 



II I male m 4 S. cecropia, female n 31 



II I II 11 13 T. polyph., male n 30 



II I II II 14 II I' 113^ 



Pupae of different genera, Feb. 28, C. promethea n n 31 



hatched as follows : S. cecropia, female, June i 



H. thysbe, male, March 13 i C promethea, male n 2 2 



So far my records. From this time the remaining pupae were taken to 

 a room not heated, and gradually emerged here, which they would pro- 

 bably have done at about the same time had they never been taken to a 

 warmed room. 



On Call, promethea and Samia cynthia, artificial heat seems to have 

 not the least effect, as they were taken to a warm room in February, the 

 first C. projfiethea not hatching until the 30th of May. Of the Samia 

 cynthia, none hatched until late in June, as did the larger number of C. 

 promethea. A number of these, prottiethea and cynthia, male and female 

 of each species, were taken to a small room with a view to observe the 

 copulating of the sexes, and with a faint hope of a crossing, for which latter 

 purpose males of one species (promethea) were also put together with 



