<■'-' THE REPORT OF THE No. 19 



ExPLANAiioN OF Plate.— (See frontispiece). 



No. 1. 9 parent of brood No. 1. 



No. 2-6. $ $ brood No. ] emerged March-May, 1900. 



No. 7-11. 9 9 brood No. 1. emerged March-April, 1900. 



No. 12. $ from N. J. as close as possible to Drury's figure. 



No. 13-15. S S brood A. emerged July-August, 1900. 



No. 16. 9 



No. 17-20. S S '• '• May, 1901, 



No. 21-22. 9 9" 



No. 23. $ similar to Packard's Arctia Pallida. 



No, 24-26. S $ l^rood B emerged end July, 1900. 



No. 27. 9 " " 5th August 1900. 



No. 28. ^ " " May 1901. 



No. 29-31. $ $ Dyar's brood emerged May, 1901. 

 No. 32-33. 9 9 " " emerged May, 1901. 



APPENDIX. 



Results (vbtained at Washington, by Dr. H. G. Dyar in carrying on parallel experiments 

 1900-1901. 



Summer Moths. 

 Brood 



D 1* Eggs on sycamore, Washington, D. C, June 1, 1900. No moths. 



D 2* On pear, Hollydale, P»., May 24th, 1900. Bred at Washington, D. C, 23 moths 

 (13 $ ]10 9 ) white, 4 $ with traces of spots. 



D 3* On Sycamore, Washington, D. C, June 1, 1900. 36 moths in July-August (19 J 

 17 9 ) white, 3 $ slightly, 1 $ distinctly spotted. 



D 4* On Sycamore, Washington, D. C, in stage II, May 29, 1900. Moths in August, 

 90 moths (43 J' 47 9 ) white, 3 $ with traces of spots. 



D 5* On Sycamore, Washington, DC, June J, 1900. Moths in August, 4 moths (\. $ 3 9) 

 white. 



D 6* On Sycamore, Washington, D. C,, June 1, 190O. Moths in August, 145 moths (77 $ 

 68 9 ) white, 3 $ with traces of spots. 



D 7* Eggs from 9 on Sycamore, Washington, D. C, hatched June 11, other broods in 

 stages III and IV at the time. Moths in August, 204 moths (103 $ 101 9 ) white, 6 $ with faint 

 grayish spots. 



D 8* On Mulberry, Montreal, Ga., (J, H. Heard), June 8, 1900. Moths in August, 7 9 

 white. 



Spring Moths. 



D 9* Mating of moths of D 4 end of July, 1900, Moth 1 9 white April 24th 1901. 



D 10* Mating of moths of D 7 August, 1900. Moths March 24-May 2, 1901, 28 moths (11 

 S 17 9 ) ^ all lightly spotted, 9 all white. 



D 11 Brood of H, Textor from H. H. L., Montreal, no moths. 



D 12* Anothing mating of D 4 end of July, 1900, Moths March 28-May 4, 1901, 20 moths 

 (5 $ 15 9 ) most of them spotted, none heavily, but 1 (? 5 9 white. 



D 13" A mating of Mr. Lyman's broods A and B sent from Washington 30th May, 1900, 

 and the larvje of brood AB returned to Washington. Moths March 24-May 1 , 1901, 46 moths 

 (42 ^49) Spotted, some heavily, 3 $ and 3 9 white. 



*Larvae of Cniiea type. 



