66 



INDEX TO STRUCTURES AND SUBJECTS 



Labyrinth, V. 22 (a. horiz. norm.): XII. 43-44 (s. horiz. 

 01. I.): XIV. 51 (s. trans. 01. n.): XXVI. Ill (semi- 

 cyclopia). See also under auditory and periotic. 



Lacerta, S (double blastoderm) : 2!) (double primitive streak) : 

 37 (trifid tail). 



Laminae, paraehordal, 11 (normal) : 13 (01. I.). 



Lateral line, 57 (curvature of, in ambieoloured flat fish) : 63 

 (interrupted) : 62 (supernumerary). 



Lateral muscles, 25, 52 (hemididymus). See also under 

 muscle plates. 



Lateral union, 3, 6, IS. 



Lens, H (01. I.): 41-44 (cyclopia and semi-cyclopia) : 44 

 (ectoderm for) : 60, 61 (without other eye structures) : III. 

 14 (s. trans norm.) : V. 22 (s. horiz. norm.) : VIII. 36, IX. 

 37 (s. trans. 01. I.) : X. 40, XII. 44 (s. horiz. 01. I.) : L in 

 XXIV. 106 (parasitism) : XXV. 107, 110 (cyclopia and 

 semi-cyclopia) : XXVI. 112 (s. trans, atrophic head). 



Light, influence of exposure to, 58. 



Limpet, 47. 



Lip, lower. See under jaw. Also XIII. 47-48 (s. trans. 01. n. ). 



Literature, general index of, xi-xvii. See also under the 

 various chapters and sections on particular malforma- 

 tions. 



Lithium chloride, .'/'/. 



Liver, 19 (01. ill.): 20 (01. iv.): 34 (triple monster): 62 

 (in reversed flatfish): XII. 46 (s. horiz. 01. I.): XXII. 

 95, XXIII. 97-98 (triple monster) : XXVI. 114 (s. trans. 

 01. v.). 



Lizard. See under Lacerta. 



Longitudinal or parallel union, 4, 29, 30. 



Magnesium chloride, 43, 44- 



Maltham Tarn, trout from, 61. 



Mammal, 5, 8 (double and multiple forms) : 35, 36, 37 



(triplicity) : 39, 43 (cyclopia) : 51 (facial defect). 

 Man, 37, 38, 39 (triplicity). 

 Margin, 6 (of blastoderm in relation to embryo formation and 



double monstrosity) : 26 (do. in mesodidymus) : 36 (do. 



in triple monstrosity) : 60 (in pathological conditions). 

 Meckel's cartilage. See under visceral arch I. 

 Medulla oblongata, S, 4, n (union at) : IV. 18 (s. trans. 



norm.): V. 21-22 (s. horiz. norm.): IX. 38 (s. trans. 



01. I.) : X. 39-40, XII. 43-44 (s. horiz. 01. i.) : XIV. 51 



(s. trans. 01. n.) : XXIII. 97-98 (triple monster) : XXVI. 



Ill (semi-cyclopia). 

 Membrane. See under dorsal edge, ventral edge. 35, 26 



(intermediate, in hemididymus) : 23 (preanal edge, in 



anakatadidymus). 

 Meroblastic ova, xi, 5. 

 Mesentery, SO, 21, 22 (double in Cls. iv., v., vi.) : VI. 28-29 



(a. trans. 01. via.). 



Mesial muscular mass. See under muscle segments. 

 Mesodidymus, 1, 3, 6, 10, 25, 55, 60. See also under hemididy- 

 mus. 



Mesonephros. See under Wolffian body. 

 Metamorphosis, and coloration in pleuronectids, 58, 59. 

 Migration of eye in flat-fishes, 58. 

 Minor abnormalities, 46-f>%. 

 Mode of origin, of double and multiple monstrosity, xi, 6-8 : 



of hemididymus, '27 : of triple monstrosity, 36. See also 



under cyclopia, etc., etc. 

 Mollusca, 47-48 (hermaphroditism, etc.). 

 Monocyclic hermaphroditism, 47. 



Monoecious condition, whether ancestral, 48. 



Mouth, 15 (01. i.): 16 (01. n.): 41-4,2 (cyclopia): 44 (semi- 

 cyclopia) : 40 (pug-head) : 50 (round-head) : 51 (defective) : 

 61, 62 (absence of mouth, etc.) : III. 15 (s. trans norm.): 



XIV. 49, 51 (s. trans. 01. n.) : XXII. 95 (triple monster). 

 Mucous groove or canal, III. 13-15 (s. trans, norm.) : V. 21-22 



(s. horiz. norm.): VIII. 36 (s. trans. 01. I.): XIII. 47 

 (s. trans. 01. n.): XXV. 108 (cyclopia). 



Miillerian duct. See oviduct. 



Multiple forms, xi, 5, 8. See also triple monstrosity. 



Muscle. See under lateral, obliquus oc., rectus oc., muscular 

 raphe, muscle plates. 



Muscle plates or segments, 11 (at transition region) : 12 (normal 

 number): 15 (01. I.): 17 (01. H.): 19 (01. m.): 35-27 

 (hemididymus) : 20 (parallel union) : 5,2 (absence) : VI. 

 26 (s. trans, norm.): V. 21-23 (s. horiz. norm.) : VI. 27, 

 VII. 31, XXVI. 114 (s. trans. Cls. v., vi.) : VII. 32-34 

 (triple monster) : IX. 38 (s. trans. 01. i. ) : X. 39-40, XI. 41, 

 XII. 43-44 (s. horiz. 01. I.): XV. 52-53, XVI. 54-55 (s. 

 horiz. 01. in.) : XXIII. 97-98 (triple monster). 



Muscular raphe, 54, XXVI. 113 (s. trans, absence of noto- 

 ehord). 



Mythology and teratology, 1. 



Nasal cartilage. See under olfactory. 



Nerve II., 13-14 (01. I.): 41, 42, 44 (cyclopia): 59 (super- 

 numerary eye): III. 15 (s. trans, norm.): VIII. 35 (s. 

 trans. 01. I.) : XI. 41-42, XII. 46 (s. horiz. 01. I.) : XXV. 

 108 (cyclopia) : XXV. 110 (semi-cyclopia). 



Nerve III., 13 (01. I.) : III. 16 (s. trans, norm.). 



Nerves of pelvic plexus, 62 (variations). 



Nerves, sensory, and growth, 15. 



Neural arch cartilage, 12 (normal) : 13 (01. i.) : 17 (01. n.) : 

 19 (01. in.) : 52 (twisted body, etc.) : 54 (absent note- 

 chord) : IV. 19 (s. trans, norm. ) : X. 39-40 (s. horiz. 

 01. i.) : XV. 52, XVI. 55 (s. horiz. 01. in.) : No, in XVII. 

 62 (normal), 63 (duplicity) : XXVI. 113 (s. trans, absence 

 of notochord). 



Nile, two-headed shark (?) from, 2. 



Notch, 52 (on dorsal edge of body) : 57 (in dorsal fin of flat- 

 fishes) : 62 (on ventral edge of do. ). 



Notochord, 11 (normal) : 13 (01. 1.) : 17 (01. n.): 18 (01. in.): 



19 (01. iv.): 20 (01. v.): 21-22 (01. vi.): 25 (hemididy- 

 mus) : 29 (parallel union) : 34-36 (triple monster) : 54 

 (absent) : 54 (double) : IV. 17-19, VI. 24-26 (s. trans, 

 norm.): V. 22 (s. horiz. norm.): VI. 27-29 (s. trans. 

 01. via.): VII. 30 (s. trans. 01. VI b.), 31 (s. trans. 01. 

 via.): XXVI. 114 (s. trans. Cl. iv.): VII. 32-34 (triple 

 monster): IX. 38 (s. trans. 01. I.): X. 40, XI. 41-42, 

 XH. 44-46 (s. horiz. 01. I.) : XIV. 51 (s. trans. 01. II.) : 



XV. 53, XVI. 54-55 (s. horiz. 01. m.): XXVI. 113 

 (absence of) : XXIII. 97, 98-99 (triple monster) : XXI. 

 89-90 (diagrams) : n in XVII. 56 (normal), 58 (01. I.), 60 

 (01. II.): nch in XVII. 62 (normal), 63 (duplicity): IV. 



20 (s. trans. , reduplication). 



Obliquus oc., inferior, 14 (01. I.): 41-42 (cyclopia, etc.): V. 



23 (s. horiz. norm.) : VIII. 35 (s. trans. 01. i.) : XII. 46 



(s. horiz. 01. I.) : XIII. 47-48 (s. trans. 01. n.). 

 Obliquus oc., superior, 14 (01. I.): 41-42 (cyclopia, etc.): 62 



(abnormality of): III. 13 (s. trans, norm.): V. 22 (s. 



horiz. norm.): VIII. 35 (s. trans. Cl. I.): X. 39-40 (s. 



horiz. 01. i.). 



