INDEX TO VOLUME XXII. 



Academy of Science, Ohio 1 



A Case of Unhindered Growth of 

 the Incisor Teeth of the Wood- 

 chuck 170 



Additions to Ohio Vascular Plants 

 for 1921 91 



Alaskan Diptera of the Family 

 Syrphidae 143 



Alphelinus Semiflavus, Some Bio- 

 nomics of 209 



An Annotated List of Mississippi 

 Chrysomelidae 117 



A New Hymenopterous Parasite 

 Upon Adult Beetles 140 



A New Species of Plea 114 



A New Type of Bryozoan Gizzard 

 with Remarks on Genus Beeskia 158 



Arisaema, Sexual Nature of Twins 149 



A Synopsis of the Genus Steno- 

 cranus 69 



Binomics of Alphelinus Semi- 

 flavus 209 



Bryozoan Gizzard, New Type of 158 

 Beeskia, Remarks on Genus 158 



Catalog of Ohio Vascular Plants 



for 1921 91 



Chrysomelidae, List of Mississippi 117 

 Classification of Plants, XII. ... 129 

 Common Misconceptions of Evo- 

 lution 173 



Common Mole, Habits of 164 



Concretions in Lake Deposits at 



Elyria, Ohio 97 



Cottus Ictalops, Food Habits. ... 95 



Darters, Food of Ohio 41 



Descriptions of Alaskan Diptera 



of the Family Syrphids 143 



Dichotomous Twins of Arisaema 149 

 Diptera of the Family Syrphidae. . 143 



Dodder Gall Weevil 63 



Dynamics of the Lithosphere. . . . 193 



Emergence of a Mayfly from its 

 Nymphal Skin 155 



Evolution, Sexual, in the Plant 

 Kingdom 101 



Evolution, Some Common Mis- 

 conceptions of 173 



Food Habits of Young of Cottus 

 Ictalops 95 



Food of the Common Ohio 

 Darters 41 



Glacial Material, Rock Channels 

 Filled With 125 



Growth of the Incisor Teeth of 

 Woodchuck 170 



Habits of the Common Mole 164 



Homologies of the Tracheal 



Branches of Insects 84 



Hymenopterous Parasites upon 



Adult Beetles 140 



Incisor Teeth of the Wood- 

 chuck, Growth of 170 



Insects, Respiratory System of . . 84 



Lake Deposits, Concretions in. . . 97 

 Lithosphere, Dynamics of the. . . . 193 



Mayfly, Emergence from 



Nymphal Skin 155 



Misconceptions of Evolution. . . . 173 



Mississippi Chrysomelidae 117 



Mole, Habits of Common 164 



Mysidia, New Species of 69 



New Hymenopterous Parasite 



upon Adult Beetles 40 



New Species of Mysidia 69 



New Type of Bryozoan Gizzard. . 158 

 Notes on the Food Habits of 

 Young of Cottus Ictalops 95 



Ohio Academy of Science, Report 1 



Ohio Darters, Food of 41 



Ohio Vascular Plants for 1921 .... 91 



Plants, Classification of 129 



Plea, a New wSpecies of 114 



Preservation of Natural Con- 

 ditions 99 



Progression of Sexual Evolution 

 in the Plant Kingdom 101 



Report of Thirty-first Meeting, 



Ohio Academy 1 



Respiratory System of Insects. . 84 

 Rock Channels and Cavities 

 Filled With Glacial Material. . 125 



Sexual Evolution in the Plant 

 Kingdom 101 



Sexual Nature of Vegetative or 

 Dichotomous Twins of Arisaema 149 



Smicronyx SculpticoUis, Notes on 63 



Some Bionomics of Alphelinus 

 Semiflavus 209 



238 



