806 Pomona College Journ^m, op Entomology 



I took 140 very young caterpillars, and raised them in a cool tem- 

 perature, and later bred the chrysalides in about the same degree of coolness 

 as the chrysalides from which I bred 3, with the confluent ocelli. I got the 

 buttertiies from February 3d tiO the 11th, and here I obtained none with 

 a marked enlargement of the ocelli of the hindwing — see two reproductions, 

 5 and 6. All were lighter in ground color, especially on the border; 5 has 

 an unusual amount of yellow on the hind wing, it forms a band on the 

 outer side of the ocellus; this yellow color shows in the plate dark, and so 

 shows this specimen to be darker than it really is; 6 has no yellow band, 

 and the fore wing has a dark blue ground color, especially on the inner field. 

 As these caterpillars and chrysalides were bred in the same degree of coolness 

 to produce the enlargement of the ocelli of the hind wings, and produced only 

 ocelli of normal size, it seems to show that they were not yet bred long enough 

 through successive generations in 90 degrees warm, and damp air, to develop 

 the tendency towards the enlargement of the ocelli. 



As I am to begin now, to build my new experimental station, I hope to 

 have it in full working order by next fall, and will then experiment on a 

 larger scale. Should my readers find this series of short articles interesting 

 enough, I hope to be able to continue them next winter. 



