Scudder.] 294 - [December 23, 



resentatives of A. caudacutus so far from the seaboard, and in such 

 large numbers, forms a most interesting fact in the distribution of our 

 birds, and if usually so abundant there as during the last autumn it 

 is not a little remarkable that it has so long escaped observation. 



Section of Entomology. December 23, 1874. 



Mr. H. K. Morrison in the chair. Six persons present. 



The following paper was read : — 



Description or some Labradorian Butterflies. By Samuel 

 H. Scudder. 



The following descriptions have been drawn up to assist those who 

 would compare certain Labradorian butterflies with those from other 

 parts of the continent or from Northern Europe with which they are 

 closely allied. 



Brenthis Triclaris (Hiibn.) Herr.-Schaeff. 



Upper surface of wings deep fulvous, marked with black, with black 

 nervures. Fore wings with a narrow, zigzag, transverse, mesial band 

 starting from the apical branch of the sub-costal nervure at a point 

 scarcely three-fifths of the distance from the base \o the tip of wing, 

 connected with the costal border by a slender, very oblique streak, 

 directed inward ; the first part of this band is arcuate, and takes a 

 general direction toward the middle of the outer border, terminating 

 in the lower half of the subcosto-median interspace ; thence it is 

 bent inward along the upper submedian nervule to the point of its 

 nearest approach to the costal border, whence it is bent downward 

 and slightly outward across the next interspace at right angles to the 

 upper submedian nervule, bent again inward following the middle 

 submedian nervule to its origin, from which point it crosses the next 

 interspace, parallel to the preceding portion, and is continued half 

 way across the medio- submedian interspace, bent inward again at 

 right angles and terminates on the submedian nervule, a little past 

 the middle ; the upper portion of the band thus forms a W> opening 

 inward and upward ; a band of similar width borders the outer 

 limit of the cell, within which, with its angle resting on the middle of 



