x The Biological Society of Washington. 



The following communications were presented : 



T. S. Palmer: Indexing Scientific Names, with Special Reference to the 

 Genera of Mammals.* 

 0. F. Cook: Central American Mutations of Coffee. 

 W. P. Hay: Terrapin Culture in the United States. 



October 31, 1903 — 375th Meeting. 



The President in the chair and 37 persons present. 



"Walter Evans exhibited a copy of a circular of directions for the destruc- 

 tion of mosquitoes to be distributed in the Hawaiian Islands and printed 

 in all the languages commonly used there. 



L. 0. Howard stated that the larvae of Anthrenus varians of the family 

 Dermestidae, had been observed to prey upon the eggs of the tussock 

 moth . 



The following communications were presented : 



R. P. Currie : A Recent Entomological Expedition to British Columbia. 



M. A. Carleton : Geographic Distribution of the Oat Plant. 



Ch. Warded Stiles : The Dwarf Tapeworm {Hymenolepis nana), a Newly 

 Recognized and Rather Common Parasite of Man in the United States. t 



November 14, 1903 — 376th Meeting. 



The President in the chair and 41 persons present. 



Lester F. Ward spoke of the description, in 1840, by C. G. Ehrenberg, of 

 14 hypothetical species of Diatomaceee, 10 of which were afterward actually 

 discovered and recognized. 



W. H. Dall discussed the existence of a dorsal keel toward the tail in 

 porpoises. 



G. K. Gilbert exhibited photographs showing a remarkable development 

 of heliotropism in the trunks of Pinus balfouriana. in California. 



The following communications were presented : 



Lester F. Ward : The Dresden Cycad (Cycadeoidea reichenbachiana). 



F. A. Lucas : The Making of a Whale. 



November 28, 1903 — 377th Meeting. 



The President in the chair and 37 persons present. 

 The following communications were presented : 

 H. F. Moore: The Artificial Fattening of Oysters. 



F. H. Hillman : The Comparative Effects of the Seed Midge and of 

 Brucophagus funebris on the Structure of Clover Fowers and Fruits. 

 Charles Hallock : Sea Trout Where No Rivers Are. 

 O. F. Cook : The Vegetative Vigor of Hybrids and Mutations. 



* Index Generum Marnmaliuni, N. Am. Fauna, No. 23, pp. 1-984, Feb., 1904. 

 t N. Y. Med. Journ. and Phila. Med. Journ. (consolidated) (1301), Vol. 78 (19), pp. 877-881, 

 figs. 1-5, Nov. 7, 1903. 



