March, 1914.] PROCEEDINGS OF THE SOCIETY. 79 



I 



sculpture of those parts, and without typical specimens for comparison it 

 would undoubtedly be difficult to separate some of the forms by description 

 alone, and he hoped that Dr. Horn would ultimately find more positive char- 

 acters for their separation, perhaps in the setae. Mr. Harris expressed his 

 gratification at having been able to secure from Mr. Nunenmacher cotypes of 

 the forms recently described from his captures, so that he was able to exhibit 

 a collection nearly complete of all the described forms. 



The paper was discussed by Mr. Schaeffer, who commented on the value 

 of the setae as shown by the work of Geo. H. Horn and others in Carabidae 

 and especially lately by Dr. Roeschke in his monograph of the Cychrini ; by 

 Mr. Leng, who said that ten years ago the specific names in Omus repre- 

 sented mainly the races inhabiting the different mountain ranges, while now 

 the varietal names introduced represented rather the races inhabiting the 

 different valleys in each range and were liable under continued exploration to 

 be much further multiplied as new valleys were reached ; and by the president, 

 whose questions brought out that the lower the mountains the greater the range 

 of the race inhabiting them, the lofty ridges of the Sierra Nevada apparently 

 acting as barriers to isolate the individuals inhabiting the intervening valleys. 



Mr. Woodruff read a paper on " Some Dragonflies of a Connecticut 

 Brook " which will be printed in the Journal. 



Mr. Hallinan in discussing this paper described his experiments in cutting 

 and restraining the fore and hind wings alternately, and in estimating the 

 speed of dragon flies. The paper was also discussed by Messrs. Schaeffer, 

 Davis and the president. 



The president being obliged to retire on accoimt of another engagement, 

 Mr. Davis, at his request, presided for the remainder of the evening. 



Mr. Henry Bird read a paper on " A New Species of Noctuid Moth Sub- 

 sisting in New York City," and exhibited the moth Papaipema lysimachice, 

 its larvae and pupae, stating that it bred commonly in the stems of the whorled 

 or four-leaved loosestrife ; it has heretofore been confused with a species very 

 similar in the adult stage boring in columbine. 



The paper was discussed by Dr. Forbes and Messrs. Davis, Grossbeck, 

 Engelhardt and Schaeffer, especially in regard to the different results attained 

 by change of food, some species being stable against, others being affected by 

 change of food; the larvae being sometimes affected, but the imagos not. In 

 one case a batch of eggs was divided and two supposedly different species were 

 reared by difference in feeding. Mr. Engelhardt mentioned the similar case of 

 Sesia pictipes. 



Mr. Schaeffer exhibited his collection of the genera Temnochila and 

 Tenebroides and spoke in detail of the characters by which the species would 

 be separated in his forthcoming paper. He mentioned the difficulty he had 

 in recognizing the true virescens and the pleasure he experienced in finding 

 acuta and virescens correctly separated in the small collection of Coleoptera 

 in the Long Island Historical Society. 



Mr. Schaeffer also spoke of the genus Sc/irites, saying that S. subter- 



