Maynard.] 356 [October 18, 



should know the younger stages of the Myxinoids before 

 attempting to decide the question. The Amphioxus has 

 been only found in waters where some species of Myxinoids 

 were abundant, and perhaps is only a young stage of the 

 latter. 



The following paper was presented : — 



A Catalogue of the Birds of Coos Co., N. H., and Ox- 

 ford Co., Me.; with annotations relative to the 

 Breeding Habits, Migrations, &c. By C. J. Maynard. 

 With Notes by Wm. Brewster. 



Although many catalogues of the birds of different localities in 

 New England have appeared, yet we remain in ignorance as to the 

 distribution of many of our birds, especially the rarer ones, during 

 the breeding season. I therefore present the following catalogue, 

 because it lies in my power to define more definitely than has hith- 

 erto been done, the northern distribution of many species. The Al- 

 leghanian and Canadian faunae meet in the localities of which I write, 

 and I have in a measure been enabled by my observations to draw 

 more clearly the line between them than has been done by pre- 

 vious authors. In this enterprise I have been greatly assisted by 

 my friend, Mr. Wm. Brewster, of Cambridge, who has spent several 

 summers in the region of the White Mountains and southern New 

 Hampshire. 



Starting on the north-eastern coast of Maine, near Mt. Desert, the 

 dividing line of these faunae proceeds in a north-westerly direction 

 along the southern margin of the mountain range which stretches 

 across the State to the White Mountains. Here it declines to the 

 south, reaching quite to Rye Beach. Then once more proceeds 

 north-west along the western borders of the mountain range into Ver- 

 mont, where it is not my present purpose to trace it. 



So abruptly is the line defined in many places by the range of 

 mountains, that some birds which occur in abundance one side are 

 found only as stragglers, or not at all, on the other. This is invaria- 

 bly the case in any country, especially where the dividing chain runs 

 east and west. 



I have also given the southern distribution during winter of the 



