THE CANADIAN ENTOMOLOGIST. 157 



22. Mamcstra laudabilis (Giien.) 

 California, Mr. Hy. Edwards. 



:?j. Mamcstra 4-luicafa Grote, Bui.' Buf. Soc. N. S., i, p. 140, plate 

 4. fig. 15 and List, p. 13. 



California, Mr. Hy. Edwards and Mr. Behrens. 



24. D'uuithcecia leucogr annua Grote, List. p. 64. 

 California, Mr. Hv. Edwards and Mr. Behrens. 



25. Dianthd'cia riifida Grote, List of the Noct. of N. Am., p. 64. 

 California, Mr. Behrens. '' Oakland, No. 22." 



26. DiantJuvcia insolms Grote, List of the Noct. of N. Am., p. 65. 

 California, i\Ir. Behrens. 



2y. 0/icocnemis Behrc?isi Grote, List of the Noct. of N. Am., p. 65. 

 California, Mr. Behrens. '' Sanzalito, Feb. loth to 24th." 



(To be Continued.) 



CORRESPONDENCE. 



grapta co-m-ma and drvas. 

 Dear Sir, — 



I am able to give you the results of an experiment made with Grapta 

 comma, the converse of that made in 1S73 ^^'^^^"^ dry as. On the loth of 

 May last I took a female, true co?nma — red hind Avings and plain brown 

 underside — and tied it up to a branch of Hop-vine, which branch was 

 free from eggs of any sort. She laid in the bag some forty eggs, and I 

 had from them thirty-nine caterpillars. Most of them in due time 

 reached the chrysalis state, and between the loth and 15th of June there 

 emerged thirty-four butterflies — every one a dryas. In the fall of 1873, 

 from eggs of dryas, there resulted a large number of comma and six dryas, 

 as stated in the Entomologist for October. I think this fully settles the 

 question of the dimorphism of the species. 



Yours truly, 



W. H. Edwards, Coalburgli, W. Va. 



