1870.] 207 [Sanborn. 



the North American species of the genus Nisoniades. these 

 organs were asymmetrical. The asymmetry is confined to 

 the lower lateral plates, which are unusually developed in 

 this genus, and shows itself in the diverse length of the 

 lower process and in the size, and the entireness or the ex- 

 cision of the lateral flap. The only species in the genus, as 

 generally accepted, which does not come under this rule, 

 is 1ST. Catullus ; but the structural features of all the appen- 

 dages of the body of this species show that it is wrongly 

 placed in this relation. 



Mr. Scudder also stated that the butterfly described by Dr. 

 Harris in his State Report as Eudamus Bathyllus, — a name 

 invariably accepted by subsequent writers — was not the spe- 

 cies originally described and figured by Abbot and Smith 

 under the same specific name ; he therefore proposed to call 

 Harris's species Eudamus Pylades. 



Mr. P. S. Sprague referred to an instance related by a friend 

 not versed in entomology, where " flies " were seen, through a 

 hole in the ice in midwinter, to ascend in large numbers from 

 the bottom of a stream to the surface and take flight. 



Mr. B. P. Mann stated that he had taken a specimen of 

 Carabus Chamissonis Fisch., in Labrador. 



Mr. F. G. Sanborn remarked that he had taken ten or 

 twelve specimens of the same species in August, on the sides 

 of Mt. Washington, N". H., at a height of from four to five 

 thousand feet above the sea. 



He also reported the capture in Andover, Mass., on Christmas day, 

 1869, of Capnia and Tceniojiieryx, moving actively upon the ice; of 

 several Staphylinldce of the genera Lathrobium, Ste?ius, Philonthus and 

 Lithocliaris , together with Photinus corruscus and larvae of Telepliorus, 

 and some undetermined Coleopterous and Geometrideous larvae, also a 

 species of Salda (Hemipterous) , and of Dlptera, Hydroplwrus pirata 

 Loew, and Sepsis sp., which were struggling in water of about one 

 eighth inch in depth, covering the surface of the ice in meadows. 



