LIST OF ILLUSTRATIONS. 
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Page 
Fig. 46. — Pectoral and pelvic limbs of Ichthyosaurus intermedins (Cony- 
beare), Lower Lias, Lyme Regis .. .. .. .. 37 
,, 47. — Carapace of Trionyx Oergensi (Meyer), Lower Miocene, 
Mayence . . . . . . . . . . . . . . . . 38 
,, 48.- — Carapace of HardeUa thurgi (Gray), Pliocene, Siwalik Ilills, 
India . , .. «. .. . . .. . • .« 30 
,, 49. — Plastron of Cachuga tectum (Gray), Pliocene, Siwalik Hills, 
India «. «. , , •* a. a . a * aa 30 
,, 50. — Cranium of Fhinochelys cantabrigiensis (Lydekker), Green- 
sand, Cambridge. . . . . . . . . . . . . . 40 
„ 51. — Cranium and mandible of Argillochelgs antiqua (Eonig), 
London Clay, Sbeppey .. .. .. .. .. .. 40 
,, 52. — Carapace of Nicoria tricarinata, var. sivalensis (Lydekker), 
Pliocene, Siwalik Hills, India .. .. .. .. ..40 
,, 53. — Plastron of Fleur osternum FullocJci (Owen), Purbeck, Swan- 
age, Dorset a. a. .. a. .. a. ..40 
,, 54. — Two views of cranium of Argillochelgs cuneiceps (Owen), 
London Clay, Sbeppey . . . . . . . . . . . . 41 
,, 55. — Carapace of Plesiochelys valdensis (Lydekker), Wealden, Isle 
of Wight . . . a a a . . a . . a a . . . 41 
,, 56. — Carapace of Flatyehelys oberndorferi (Wagner), Lithographic 
stone, Bavaria .. .. .. .. .. .. ..42 
,, 57. — Carapace of Chelone (?) Fenstedi (Mantell), Lower Chalk, 
Burham, Kent .. .. .. .. .. .. ..43 
,, 58.— Skull and tail-sheath of Miolania Oiceni (A. S. Woodw.) 
Hewer Tertiary, Australia .. .. .. .. .. 43 
,, 59. — Skeleton of Thcilassochelys caretia (Linn.) .. .. .. 44 
„ 60. — Fragment of carapace of Psephoderma alpinum (Meyer), 
Trias, Bavaria . . . . . . . . . . . . . . 45 
,, 61. — Vertebra of Cimoliosaurus Fichardsoni (Lydekker), Oxford 
Clay, Weymouth. . .. .. .. .. .. ..46 
,, 62. — Pectoral girdle of Flesiosaurus Baioldnsii (Owen), Lower Lias, 
Street, Somerset . . . . . . . . . . . . . . 46 
„ 63. — Sauropterygian mandibles, Feloneustes Thaumatosaurus , and 
Flesiosaurus . . . . . . . . . . . . . . 47 
,, 64. — Tooth of Folyptychodon interrvptus (Owen), Greensand, 
Cambridge .. .. .. .. .. .. ..48 
,, 65. — Tooth of Feloneustes philarchus (Seeley), Oxford Clay, Bedford 48 
,, 66. — Vertebra of Flesiosaurus HawTcinsii (Owen), Lower Lias, Lyme 
Regis . a a a a a - . . a a a a a a . 48 
,, 67. — Skeleton of Plesiosaurus, Lias, Lyme Regis .. .. .. 49 
,, 68. — Skeleton of Lariosaurus Falsami (Curioni), Muschelkalk, 
Perleclo, Italy . . . . . . . . . . . . . . 50 
,, 69. — Cranium of Nothosaurus mirabilis (Munster), Muschelkalk, 
Germany . . . . . . . . . . . . . . 51 
70. — Profile of the skull of Nothosaurus mirabilis (Munster), 
Muschelkalk, Germany .. .. .. .. .. .. 51 
