—103 — 



forms instead three as heretofore recognized, and pointed out the differ- 

 ences between them, making the pattern of maculation the criterion ol 

 his species. 



Mr. Graef expressed his dissent from Mr. Smith's views, and showc d 

 how in his opinion the maculation could be so modified as to produce 

 the different forms. 



Prof. Riley commenting on Mr. Smith's paper said that he did not 

 agree with him at all. He thought that there was but a single white 

 species and possibly there may be three rather well marked species, with 

 three moderately well marked larval forms. He said that in variation 

 not only color changes but sometimes the pattern does, also. Especially 

 is diis true in forms that have more than a single brood annuallv. He 

 instanced cases in the Tir/n'adce, where forms appear, so different in 

 pattern that there stems no possible connection between them, but bred 

 from the same hatch of eggs. 



Mr. Huls.t also expressed his dissent from Mr. Smith's views. He 

 thought that the variability of other species in the Arctiidce was well estab- 

 lished by breeding, and it should be at least considered probable that 

 other species in the same group varied as much. He had taken speci- 

 mens numerously, and it seemed to him that he had taken forms from the 

 lightest to the darkest under such circumstances as to make it very cer- 

 tain they were one species. 



Mr. Smith replied briefly, admitting the possibility that the white 

 forms may be albino forms of dark species but again emphasizing the 

 differences in pattern as indicative of specific value. 



Mr. Hulst stated that Mr. Bruce had taken an insect in New York 

 which Mr. Edwards after examination said must be new and allied to 

 $eirarctia. Before dying the moth had laid some eggs, and larva* lunch- 

 ing from them seemed rather unlike anything known to Mr. Bruce — he 

 took them with him to Colorado, where they completed their wansloima- 

 tion, giving forth Spilosinia virginica. 



Prof. Riley said in addition to his previous statements that species 

 sometimes vary in certain definite directions; He also called attention to 

 the fact that Mr. Smith had described a new species of Euerythra, while 

 that same form had been bred from the same larva with /:'. fihastna. 



On behalf of the Brooklyn Ent. Soc. Mr, Angel! welcomed the mem- 

 bers to the city, and anounced that arrangements had been made to join 

 the Botanists in their excursion to Highlands in N. }. ami distributed 

 tickets and circulars giving date and place o'Y starting. 



On motion of Dr. Morris the meeting adjourned until Wednesday, 

 August roth, at ^ A. M. 



