LIST OF CONTRIBUTORS. 143 



Nuttall, Thomas. Continued. 



Observations on a species of Anemone of the section Pulsa- 

 tilla, indigenous to the United States, j v, 158 



A description of some of the rarer or little known plants in- 



digenous to the United States, from the dried specimens in the 

 herbarium of the Academy of Natural Sciences of Philadelphia. 

 j vii, 61 



Descriptions of plants collected by AYilliam Ganibel, M. D., 



in the Rocky Mountains and Upper California. P '48, 7 ; 

 J I, 149 



See Wyetli, Nathaniel, and Thomas Nuttall 



Oberholser, Harry C. Some untenable names in ornithology. 

 P '99, 201 



A monograph of the genus Dendrocincla Gray. P '04, 447 



A monograph of the genus Collocalia. P '06, 177 



Oca, Rafael Montes de. The Mexican humming birds. P '61, 

 47, 80, 551 



Ochsenius, Carl. On the formation of rock-salt beds and mother- 

 liquor salts. P '88, 181 



Ogden, J. A. Synopsis of the genus Chettusia (Lobivanellus) with 

 a description of a new species, P '71, 194 



Description of a new species of bird of paradise of the 



genus Ptiloris, in the collection of the Academy. P '75, 451 



On Ptiloris wilsonii Ogden. P '76, 182 



Ord, George. Account of a North American quadruped, supposed 

 to belong to the genus Ovis. j i, 8 



An account of an American species of the genus Tantalus. 



j i, 53 



Observations on two new species of the genus Gracula of 



Latham, j i, 253 



An account of the Florida jay of Bartram. j i, 345 



An account of a new species of the genus Arvieola. j iv, 305 



See Say, Thomas, and George Orel 



Ortmann, Arnold E. A new species of the isopod genus Bathy- 

 nomus. P '94, 191 



A study of the systematic and geographical distribution of 



the decapod family Atyidae Kingsley. P '94, 397 



A study of the systematic and geographic distribution of the 



decapod family Crangonidae Bate. P '95, 173 

 — Crustacea and Pycnogonida collected during the Princeton 

 Expedition to North Greenland. P '01, 144 



