294 
MARSIPOBRANCHS, vy. Cyclostomes ; 
tables of the early development of, 
280, 281. 
McClure, 182. 
Mechanical adaptation of the fish’s 
form, 5, 6. 
Median fins, v. Fins. 
Megalurus, 165; M. elegantissimus, 
165 (Fig. 171). 
Megaptera, v. Whale; MM. longimana, 
numerical lines of, 5 (Fig. 7), 61. 
Menaspis, skin defences of, 113. 
Menhaden, v. Brevootia. 
Metamerism, vertebrate, of fishes, 14- 
16; of lampreys, 15; of sharks, 16, 
Miall, L., 126. 
Microdon, 357; M. wagneri, 158 
(Fig. 163). 
Mivart, St. G., 40 
Modern fishes, v. Teleostomes. 
Mollier, S., 39. 
Monk-fish, v. Rina. 
Mormyrus, 171,172; M. oxyrhynchus, 
172 (Fig. 179). 
Morphology, Journal of, quoted, 51 
note. 
Mouth of fishes, v. Jaws, Teeth, etc. ; 
of catfish (a Teleostoma), 64 note. 
Movement in water, I, 2 (Figs. 1 and 
2%. 
Mucous canal system, v. Lateral line. 
Miiller, Johannes, 145. 
Mullet, gills of, 20. 
Murena, 173. 
Myliobatis, v. Eagle-ray. 
Mylostomids, in classification, 8; trunk 
of, 136; jaws of MZylostoma varia- 
bilis, 136, 137 (Fig. 138). 
Myriacanthus, in classification, 8 ; 
restoration of, 104; head region of, 
105 (Fig. 106); dermal plates of 
head and snout, 105 (Figs. 106, 
A and B), 113; mandibular, 106 
(Fig. 107); dorsal spine, 107 (Fig. 
114); dental evolution, 112; sha- 
green tubercles and dermal bones 
and plates, 105 (Fig. 106), 107 
(Fig. 114), 113. 
INDEX 
Myxine, classification, 8; gills of, 17_ 
(Fig. 10), 18; general description, ; 
of M. glutinosa, 59, 60 (Fig. 71), 
61 (Fig. 72 B); eggs of, 180-182. 
(Fig. 187); genital system, tables 
of, 266; excretory system and urino- 
genital ducts, 270. 
Myxinoid, Californian, gills of, 18; 
teeth of, 57; eggs of, 182 (Figs. 186 
_A and 187 A); comparison tables 
of the early development, 280, 281. 
Names, list of authors and their 
works, 231-251. 
Names, list of derivations of, 227-230. 
Nares, in Dipnoans, 129. 
Natterer, J., 125. 
Necturus, swim-bladder of, 21. 
Nervous system, central, 272 (Figs. 
339-341), 273 (Figs. 342-344) 
274, 275. tie 
Newberry, J. W., 78, 106, 120, 130, 
131, 132, 136. 
Newton, 106. 
Nicholson, H. A., 125. 
Notacanthus sexspinis, 168 (Fig. 194). 
Notidanus, antiquity of, 9; gill slits, 
16, 19; pectoral fin, 40-42 (Fig. 
52), 44, 45; described, 87-89 (Fig. 
93);5 affinities, 96; skull, jaws, and 
branchial arches of, 254 (Fig. oa 
311). 
Numerical lines of fishes, 5, 6 (Figs. 
5-8). 
Onychodus, in classification, 8. 
Operculum of Teleosts, 19; comparison 
tables of, 260. 
Ophidium, barbels of, 46, 47 (Fig. 
55): 
Opisthure, 111. 
Osteolepis, in classification, 8; descrip- 
tion of, 150, 151 (Fig. 152). 
OsTRACODERMS, classified, 8; antiquity 
of, 9; description of, 65-71; types 
of, 67; affinities of, 66 (Fig. 77), 
70; list of authors and works on — 
Ostracoderms, 238. 
