(B.) 



LIST OF DATES OF COLLECTIONS OF LEPIDOPTERA 

 (HETEROCERA). 



The time of appearance of insects in their perfect stage is an 

 important and essential part of their life-history. It is of special 

 importance in the injurious species, in enabling us often to guard 

 against the deposit of their eggs, or to destroy the larvae at their 

 earliest appearance before serious injury has been committed by 

 them. 



The following list is from unpublished memoranda made in 

 the year 1874 of species taken either in Albany or Schenectady, 

 New York. Similar lists for the years 1869, 1870, 1872 and 1875 

 may be found in Nos. 1, 2, 3 and 4 of my " Entomological Con- 

 tributions." 



Spbingid^ 



Philampelus Pandorus (Hiibn.) August 18. 



Philampelus Achemon (Drury) August 25 . 



Ampelophaga Myron (Cram.) - June 24. 



Ceratomia Amyntor (Hiibn.) July 10; Sept. 22. 



Bombycid^e 



Alypia octomaculata (Fabr.) June 9. 



Eudry as grata (Fabr.) June 27. 



Euphanessa mendica (Walk.) July 7, 8, 12, 13, 17, t 21. 



Arctia parthenice (Kirby) August 23. 



Pyrrharctia isabella (Sm.-Abb.) June 28. 



Spilosoma virginica (Fabr.) June 12. 



Euchsetes egle (Drury) June 24. 



Halisidota tessellaris (Sm . -Abb . ) July 21 . 



Orgyia leucostigraa (Sm.-Abb.) July 9, 15. 



Heterocampa marthesia (Cram.) July 14. 



Attacus Cecropia (Linn.) June 26. 



Actias luna (Linn.) June 18. 



Telea Polyphemus (Cram.) June 26. 



Hyperchiria Io (Fabr.) July 1. 3. 



Eacles imperialis (Drury) July 8; August 24. 



Clisiocampa Americana Harris June 30 . 



Noctuid^e 



Pseudothyatira expultrix Grote July 1, 5. 



Acronycta morula Gr.-Rob June 30. 



61 



