INDEX TO PP. 



Page. 



AcROPTERis cuneata (Schenk), 41 ' 



Adiantum, 100 



A. reniforme (L), 100 



Alethoptkris (Sternb.), 55,87,89,114,115 



A. (typical form), 14 



A. ambigua (Lx.), 17 



A. aquilina (Brongniart), 20,21 



A. gigas (Geiuitz), 80,90,107,112,114— PI. XXXIII, Figs. 5, 6. 



A. grandifolia (Newberry), 11,12, 14 



A. Helenae (Lesq.), 11, 12 



A. inflata (Lesq.), 89 



A. lonchitica (Brt. Var.), 11,12.13,14, 17 



A. nervosa (Brgt.), 17 



A. Fluckeneti (Schlotli.), 17 



A. pteroides (Geinitz), 59 



A. Serlii (Brgt.), 17 



A. Sullivantii (Lx.), 17, 55 



A. Virginiana (spec, nov.), .... 88,96,107,114,— Pi. XXXIl, Figs. 1-5. 



PL XXXIII, Figs. 1-4. 

 A. (species nova, allied to (/i^os of Geinitz) , 20 



Annularia (Sternb.), 38 



A. calami toides (Schimp.), 112 



A. carinata (Gutb.), 38,105,112 



A. longifolia (Brt.), 17,20,38,39,105 



A. minuta (Brt.), 39,106 



A. radiata (Brt.), 39,106 



A. sphenopliylloides (Ung.) 17,20,39,106 



Aphlebia patens (Germ.), 97 



Arch^opteris (Daws.), 7,13,14 



A. Alleghanensis (r'?/c?op<e?-ts Allegli.) (Meek.), 6 



A. Bockscliiana {Noeggerathia Bock.) (Goepp.), 6 



A. Hibernica {Palaeopteris Hib.) (Forb.), 6 



A. Jacksoni (Cj/c?o^<e?'is Jacks.) (Daws.), 6 



A. obtusa {Cyclo'pteris of Dawson, Noeggerathia of Lesquereux) 



(Lx.), 6,7 



Artisia transversa (Sternb.), 18 



( 135 PP. ) 



