LIST OF CONTRIBUTORS. 



163 



Ryder, Jno. A. Continued. 



On the cause of the greening of the oyster and its presumed 



algous endoparasites. P '92, 352 



The principle of the conservation of energy in biological 



evolution: a reclamation and critique. P '92, 455 



— The inheritance of modifications due to disturbances of the 

 early stages of development, especially in the Japanese domesti- 

 cated races of gold-carp. P '93, 75 



— The vascular respiratory mechanism of the vertical tins of 



the viviparous Embiotocidae. P '93, 95 



— An arrangement of the retinal cells in the eyes of fishes, par- 

 tially simulating compound eyes. P '95, 161 



— The true nature of the so-called "nettle- threads" in Para- 



mcecium. P '95, 167 

 Sappobd, J. M. and A. W. Vogdes. Description of new species of 

 fossil Crustacea from the Lower Silurian of Tennessee, with re- 

 marks on others not well known. P '89, 166 

 Sager, A. B. Descriptions of three Myriapoda. P '56, 108 

 Sandpord, C. 0. On ripplemarked sandstone. P '58, 212 

 Sargent, Annie Bell. Preliminary notes on the rate of growth 



and on the development of instincts in spiders. P 1900, 395 

 Sargent, C. S. Crataegus in Eastern Pennsylvania. P '05, 577 ; 



'10, 150 

 Saunders, C. F. The pine barrens of New Jersey. P 1900, 544 

 Savage. Thomas S. On the habits of some African animals. P 

 '48, 36 



The driver ants of western Africa. P '49, 195 



On the identity of Anomya with Dorylus, P '49, 200 



Observations on the species of Teranitidae of West Africa, 



described by Smeathman as Termes bellicosus*, and by Linnaeus 

 as T. fatalis. P '49, 211 



Say, Thomas. Description of seven species of American fresh- 

 water and land shells, not noticed in the systems. J i, 13 



Descriptions of several new species of North American in- 

 sects. J i, 19 



Some account of the insect known by the name of Hessian 



fly, and of a parasitic insect that feeds on it, J i, 45. 



— On a new genus of the Crustacea, and the species on which 



it is established. J i, 49 



— An account of the Crustacea of the United States. J i, 57, 

 65, 95, 155. 235, 313. 374, 423, 442, 445, 482 



