ALPHABETICAL INDEX. 



59 



PAGE 



Insects underground, Apparatus for Study 



of. and plant-roots xi 



J- 



James, J. F., the effect of Rain on Earth 



worms xv' ii 



The Floras of Southern Ohio and 

 Eastern Maryland xx' 



K. 



Kangaroo rats, Dipodomys xi 



Kiddei", Dr. J. H., death of announced . xviii 

 King, Dr. A. F. A., on the Flight of young 



birds xxiii 



Knowlton, F. H., the fossil wood of the 



Yellowstone National Park . . . . xi 

 Fossil wood and Lignites of the 

 Potomac formation xii 



L. 



I.achnosterna. sexual characters in .... xii 

 1 i mys schisticeps from the Sierra 



Nevada, California xv 



Lignites and fossil wood of Potomac for- 

 mation xii 



Liriodendrou tuiipiferas, Ancestors of. . xxi 

 I.i u as, F. A., the affinities of Chamace . . xi 

 On abnormalities in the Ribs of 



Birds xi 



Notes on the Diseases of menagerie 

 Animals xiv 



M. 



Mammals, changes in Catalogues of 



American viii 



Marmot cr ground hog of the genus 



Arctomys xvii 



M rx, George, a new Spider and its influ- 

 ence on classification xxi 



Meeting, Ninth Annual xiv 



Meeting, postponed Ninth Anniversary . xxii 



Meeting, Tenth Annual, 1S90 xxiii 



Meeting, Anniversary, Tenth xx'v 



Me m psora, hydrangea; notes on . . . .xvii 



M< op] gus ovinus, sheeptick xv 



Merri; m. C. H., on a new Fox from Cali- 

 fornia . . . .' ■ ■ -.vii 



Description of a new species of 



American Skunk viii 



Description of a new meadow Mouse 

 with remarks on the sub-genus 



Pedomys x 



A Bat new to the United States and 

 new localities for other North 

 American mammals 1- 



PAGE 



Notes on the North American Kan- 

 garoo Rats belonging to the genus 



Dipodomys x i 



A new species of Arvicola from the 



Black hills of Dakota xii 



New Ground Squirrel from Cali- 

 fornia xi : i 



A new species of Pika (Lagomys) . . xv 

 A new and remarkable Vole from 



British Columbia xvi 



A new species of Ground Hog or 



Marmot of the geitus Arctomys . xvii 

 A new species of Ground Squirrel 



from Western Arizona xvii 



A new genus and two new species 

 of Lemming Mouse or Vole from 

 British Columbia ....".. xix 

 Two new species of Spermophile 

 from the deserts bordering the 

 Lower Colorado river in California 

 and Arizona. (Spermophilus mo- 

 havensis and S. neglectus) .... xix 

 Revision of the Grasshopper Mice 

 and Pocket Mice with descriptions 



of new species xx 



Remarks on the spotted Skunks 

 (genus Spilogale,) with descrip- 

 tions of new species xxi 



A new Spermophile from the 



Painted Desert, Arizona xxi 



A new Red-backed Mouse from Col- 

 orado xxiii 



General results of a Biological Sur- 

 vey of the San Francisco Moun- 

 tain region xxiii 



Mice, Grasshopper and Pocket, new spe- 

 cies and revision of xx 



Microtome, new freezing xvi 



Micro-organisms of Texas fever xx : i 



Mollusks, deep-sea, and the conditions 

 under which they live, ninth Presi- 

 dential address xxi; 



Mollusks, modifications of gill in uni- 

 valve xii 



Moore, V. A., notes on the morphology of 

 Podophyllum peltatum xxi 



Morphology of the genus Carex, contribu- 

 tions to ' ... xv 



Morphology of Podophyllum peltatum, 

 notes on X xi 



Mouse, Meadow, new with remarks on the 

 sub-genus Pedomys x 



Mouse, Meadow, new from Dakota . . . .xii 



Mouse, Lemming, new genus and two new 



cies of, from British America .... xix 



Mouse, parasitic protozoa (Coccidea) in 

 ttic xix 



