TABLE OF CONTENTS. 



ARTICLE I. 



DESCRIPTIVE CATALOGUE OF THE NORTH AMERICAN 

 HEPATIC^ NORTH OF MEXICO. By Lucien M. Un- 

 derwood 1 



Prefatory Note 1 



Introductory 3 



General Characters, 3— Habits of Growth, 3. — Size, 4.— Time for 

 Collecting, 4.— Geographic Distribution, 4. 



Essential Characters 5 



Sexual Phase, 6.— Vegetation, 6. — Thallus, 7.— Leaves, 7. — Asex- 

 ual Reproduction, 7. — Sexual Organs, 8. — Antheridium, 8. 

 — Archegonium, 9. — Involucres, 9.— Sporogony Phase, 10.— 

 Calyptra, 10. — Spores, 10.— Elaters, 11. 



Classification 11 



General Relations, 11.— Relation to Mosses, 12. — Subdivisions, 13. 



Bibliography 15 



Descriptive Catalogue 20 



Artificial Synopsis of Orders, 20.— Order I. Ricciacece, 21. — Order 

 II. 3Iarchantiacea; 31.— Order III. Aidhocerotacece, 44.— 

 Order IV. Jungermaniacece, 49. 

 Appendix A. Geographic Distribution of American Hepatica^ .. . 116 



Appendix B. Arrangement of European Genera 120 



Appendix C. Synopsis of European Genera 123 



Index of Species 127 



ARTICLE IL 



DESCRIPTION OF NEW ILLINOIS FISHES. By S. A. 

 Forbes 135 



