viii The Biological Society of Washington. 



B. W. Evermann: Federal control of fisheries in interna- 

 tional waters, 



H. M. Smith: A remarkable flight of bats in Luzon. 

 Paul Bartsch: A visit to the bat cave in Luzon. 



February 6, 1909 — 454th Meeting. 



The President in the chair and 66 persons present. 



M. W. Lyon, Jr., exhibited skins and skulls of the Oriental 

 genus Gymnura and of the American opossum Didelphis, and 

 commented on their resemblances. 



O. F. Cook referred to the investigations of Dr. R. R. Gates 

 in the cytology of Oenothera. 



The chair noted the capture near Washington of the little 

 black rail, a bird rare in this locality. 



The following communications were presented: 



James Judge: The blue foxes of the Pribilof Islands. 



W. J. Spillnian: The law of recombination in second genera- 

 tion hybrids. 



V. K. Chestnut: The Lewis and Clark Cavern National Monu- 

 ment, Montana. 



February 20, 1909 — 455th Meeting. 



The President in the chair and 42 persons present. 



T. E. Wilcox noted the early appearance of hei)aticas and 

 skunk cabbage in the vicinity of Washington. 



The following communications were presented : 



L. 0. Howard: Some Japanese entomologists and their lab- 

 oratories, with notes on the introduction of parasites of the 

 gypsy moth. 



J. B. Norton: Some remarkable phenomena occurring in the 

 breeding of tlie varieties of Dianthus. 



March 6, 1909 — 456th Meeting. 



The President in tlie chair and 23 persons present. 



T. E. Wilcox read a letter from Col. Gaillard, U. S. Engi- 

 neer, urging a biological survey of the Isthmus of Panama. 



T. N, Gill noted some additions to knowledge of oral gesta- 

 tion in American cichlids. 



