286 INDEX 
62; development of egg, 189 (Fig. 
215). 
Peat / fas affinities of the shark, 98 
(Fig. 103). 
AMPHIOXUS, in classification, 7; gills 
of, 16. 
ANACANTHINI, 174. 
Anal fins, v. Fins. 
Anatomy, v. Shark, Cladoselache, Acan- 
thodes, Climatius, Pleuracanthus, 
Chondrenchelys, Chimera, Dipnoan, 
etc. 
Angel-fish, v. Rhine. 
Anguilla, v. Eel. 
APODES, 173. 
Aquatic breathing, 16-23; modes of, 20. 
Archipterygium, 39. 
Arius, eggs and breeding habits, 181 
(Fig. 195), 185, 186. 
Armour plates, 23; evolution of, 25. 
ARTHRODIRA, in classification, 8; de- 
scribed, 129-138 (Figs. 130-144); 
geological position of, 9, 129; asso- 
ciated with Prerichthys by Traquair, 
130; American, described by New- 
berry and by Claypole, 130; Din- 
ichthys, 130 (Frontispiece and Figs. 
133-137); varying size of, 136; den- |: 
tition, jaws, and mandibles, 136, 137 
(Figs. 138-144) ; affinities, 136-138; 
differing from lung-fishes and from 
sharks, 136 note. 
Aspidorhynchus, 157; A. acutirostris, 
158 (Fig. 162). 
Aspredo, eggs and breeding habits, 186. 
Authors, comparison of phylogenetic 
tables of, 282, 283; v. Bibliogra- 
phy. 
Ayers, H., 57, 60, 181. 
Balfour, F. M., 40, 193, 216; phylo- 
genetic table of, compared, 283. 
Barbels, 46-48 (Figs. 55-60). 
Basking shark, v. Cetorhinus. 
Bass, striped, numerical lines of, 5 
(Fig. 8). 
Bathyonus compressus, 168 (Fig. 172). 
Batrachus, eggs of, 186. 
Bdellostoma, gills of, 17 (Fig. 9); "9 
anatomy and general description of __ 
B. dombeyi, 57, 58 (Fig. 69 A), 59, 
60 (Fig. 70), 61 (Fig. 72 4); eggs 
of, 180, 181 (Fig. 186); genital sys- 
tem, tables, 266; excretory system 
and urinogenital ducts, tables, 270; 
brain of, tables, 272 (Fig. 339); cen- 
tral nervous system, tables, 274. 
Bean, T. H., 103, 108, 110. 
Beard, J., 57, 61, 146, 217; phylo- 
genetic table of, compared, 283. 
Berycids, antiquity of, 9. 
Bibliography, 231-251. 
Blenniids, eggs of, 185 (Figs. 198- 
199), 186. 
Blenny, v. Blenniids. 
Blood-vessels, v. Fishes, circulation in, 
Heart, Chimee.oids, etc. 
Boas, J. E. V., phylogenetic table of, 
compared, 283. é 
Boéhm, A. A., 187. 
Bolau, H., 185. 
Bony fishes, v. Teleosts. 
Bow-fin, v. Amia calva. 
Brain, of Chimzroids and shinies 114; 
resemblances between lung-fishes 
and Elasmobranchs, 128; compari- 
son tables of, 272 (Figs. 339-341), 
273 (Figs. 342-344), 274-275. 
Branchial arches, table of relations of, — 
254 (Figs. 310-315), 256-257. 
Breathing, aquatic, 16-23. ; 
Breeding habits, 180-186; table of the 
early development of fishes, 280-281. 
Brevoortia (menhaden), gills of, 20. 
Bridge, T., phylogenetic tables of, 
compared, 283. y 
Bulbus arteriosus, comparative tables 
of, 258 (Figs. 316-325), 260. «a 
Bull-head, v. Catfish. _— 
Burkhardt, R., 128; phylogenetic 
table of, compared, 282. z 
Butrinus, heart, conus and bulbus ane 
teriosus, 258 (Fig. 323); —_— 
son tables of, 260. 
Calamoichthys, swim-bladder of, 22 . 
