66 



INDEX TO STRUCTURES AND SUBJECTS 



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

 CI. I.): XIV. 51 (a. trans. CI. II.): XXVI. Ill (semi- 

 cyclopia). See also under auditory and periotic. 



Lacerta, S (double blastoderm) : 29 (double primitive streak) : 

 37 (trifid tail). 



Laminae, parachordal, 11 (normal) : 13 (CI. I.). 



Lateral line, 57 (curvature of, in ambicoloured flat fish) : 62 

 (interrupted) : 62 (supernumerary). 



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

 muscle plates. 



Lateral union, S, 6, 1 .'. 



Lens, lb (CI. I.): 41-44 (cyclopia and semi-cyclopia): lib 

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

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

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

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

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



Light, influence of exposure to, 5S. 



Limpet, 47. 



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



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

 various chapters and sections on particular malforma- 

 tions. 



Lithium chloride, 44- 



Liver, 19 (CI. HI.): 20 (CI. IV.) : 34 (triple monster): 62 

 (in reversed flatfish) : XII. 46 (s. horiz. CI. I.) : XXLI. 

 95, XXIII. 97-98 (triple monster) : XXVI. 1 14 (s. trans. 

 CI. v.). 



Lizard. See under Lacerta. 



Longitudinal or parallel union, 4, 29, 30. 



Magnesium chloride, fS, 44- 



Maltham Tarn, trout from, 61. 



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



(triplicity) : 39, 4J (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, 3, 4, 17 (union at) : IV. 18 (s. trans, 

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

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

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

 Ill (semi-cyclopia). 

 Membrane. See under dorsal edge, ventral edge. 25, 26 

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

 anakatadidymus). 

 Meroblastic ova, xi, 5. 

 Mesentery, 20, 21, 22 (double in Cls. iv., v., vi.) : VI. 28-29 



(s. trans. CI. via.). 

 Mesial muscular mass. See under muscle segments. 

 Mesodidymu3, 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, 46-62. 



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

 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, 4S. 



Mouth, 15 (CI. I.): 16 (CI. II.) : 41-42 (cyclopia): 44 (semi- 

 cyclopia) : 49 (pug-head) : 50 (round-head) : 51 (defective) : 

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

 XIV. 49, 51 (s. trans. CI. 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. CI. I.): XIII. 47 

 (s. trans. CI. II.): 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 (CI. I.): 17 (CI. II.): 19 (CI. in.): 25-27 

 (hemididymus) : 29 (parallel union) : 52 (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. CI. I. ) : X. 39-40, XI. 41, 

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

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



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

 chord). 



Mythology and teratology, 1. 



Nasal cartilage. See under olfactory. 



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

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

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

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



Nerve III., 13 (CI. I.) : III. 16 (a. trana. norm.). 



Nerves of pelvic plexus, 62 (variationa). 



Nerves, sensory, and growth, 15. 



Neural arch cartilage, 12 (normal) : 13 (CI. I.) : 17 (CI. II.) : 

 19 (CI. in.): 52 (twisted body, etc.): 54 (absent noto- 

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

 CI. i.) : XV. 52, XVI. 55 (a. horiz. CI. iil) : Na in XVII. 

 62 (normal), 63 (duplicity) : XXVI. 113 (a. trana. 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 (CI. I.) : 17 (CI. II.): 18 (CI. III.): 



19 (CI. iv.): 20 (CI. v.): 21-22 (CI. VI.): 25 (hemididy- 

 mus) : 29 (parallel union) : 34-36 (triple mon8ter) : 54 

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

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

 CI. via.): VII. 30 (a. trana. CI. vi b.), 31 (a. trans. CI. 

 via.): XXVI. 114 (s. trans. CI. IV.): VII. 32-34 (triple 

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

 XII. 44-46 (e. horiz. CI. I.) : XIV. 51 (s. trana. CI. II.) : 

 XV. 53, XVI. 54-55 (a. horiz. CI. in.) : XXVI. 113 

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

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

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



20 (a. trans., reduplication). 



Obliquus oc, inferior, 14 (CI. I.): 41-4- (cyclopia, etc.) : V. 



23 (s. horiz. norm.) : VIII. 35 (s. trana. CI. i.) : XII. 46 



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

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



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



horiz. norm.): VIII. 35 (a. trana. CI. I.): X. 39-40 (a. 



horiz. CI. i.). 



