160 



Rissa tridactyla, Bon. Coast in autumn and winter ; com- 

 mon. 



Sterna hirundo* Linn. (S. Wilsoni, Bon.) Coast in sum- 

 mer ; common ; breeds abundantly in some localities. 



S. macroura, Naum. Common on the coast in summer ; 

 breeds abundantly on some islands. 



Thalasseus caspiiis, Boie. Coast in winter ; rare. 



Hydrochelidon Jissipes, Gray. (H. plumbea, Lawr.) Coast 

 in autumn ; not common. 



Colyvribus septentrioncdis^ljmw. Coast in winter ; common. 



Podiceps Holbolli^ Reinh. (P. griseigena Autli.) Coast in 

 winter ; common. 



P. cristatus, Lath. Summer visitant ; breeds about lakes 

 near Calais. — G. A. Boardman. 



Utamania tor da, Leach. Fall and winter on the coast ; com- 

 mon ; a few breed about the Bay of Fundy. 



Mormon arctica, 111. Resident on the coast ; common ; a 

 few breed on the islands about Grand Menan. 



M. cirrhaia, Pall. Winter ; rare. 



M. glacialis, Leach. Grand Menan. — Audubon. Yery rare. 



Uria gjylle, Lath. Resident on the coast; abundant; 

 breeds on rocky islands from Mount Desert eastward. 



Catarractes troille, Bryant. Fall and winter on the coast ; 

 common ; a few breed about the Bay of Fundy. 



C. ringvia, Bryant. Fall and winter ; common. 



C lomvia, Bryant. Fall and winter ; rare. 



Merguliis alle, Vieill. Winter ; common. 



Mr. S. H. Scudder, of the Zoological School at Cambridge, 

 being called upon, stated that he had been examining the 

 collection of butterflies in the Museum of the Institute, a few 

 of "which he had brought in for examination. The collection 

 was a valuable one, the specimens mostly Brazilian. He 

 entered into some details of the structure of the wings of 

 butterflies, and explained how the special arrangement and 

 direction of the nervures afforded good characteristics in 

 assisting the Naturalist to determine the affinities of these 



*For a very complete revision of the Terns of North America, see A Review of 

 the Terns of N .A. by Elliott Coues. Proc. Acad. Nat. Sc. of Phil. Dec. 1862, 

 p. 535. 



