INDEX. 
133 
ICHTHYOSAURUS, Pre-frontal, Part in, p. 99, PI. XXIV, fig. 1. 
„ Premaxillary, Part iii, p, 100, Pis. XXIII — XXV, fig. 1 ; XXIX, fig. 1. 
„ Presphenoid, Part iii, p. 96, Pi. XXV, fig. 1. 
„ Prosquamosal, Part ni, p, 101, Pi. XXIV, fig. 1. 
„ Pterygoid, Part iii, p. 100, PI. XXV, fig. 1 ; XXVI, fig. 1. 
„ Pterygomalar, Part iii, p. 102, PI. XXV, fig. 1. 
„ Scapula, Part iii, p. 104, PI. XXVIII, fig. 4 ; XXX, fig, 3 ; XXXI, figs. 3, 4. 
„ Sclerotic plates, Part iii, p. 103, PI. XXIV, figs. 1, 2; XXVIII, figs. 1, 2, 3 ; XXIX, 
fig. 1 ; XXXI, figs. 2, 5 ; XXXII, fig. 7. 
„ Skull, Part iit, p. 92, PI. XXIII, fig. 1 ; XXIV, figs. 1, 2 ; XXV, fig. 1 ; XXVI, figs. 
1—7, XXVII, fig. 1 ; XXVIII, figs. 1, 2, 3 ; XXIX, figs. 1,2; XXX, figs. 1,3; 
XXXI, figs. 1, 2, 5 ; XXXII, figs. 1, 2, 7, 8. 
„ Tympanic, Part iii, p. 95, PI. XXVI, fig. 1. 
„ Vertebrm, Part in, p. 87, PI. XXI ; XXII ; XXIII, figs. 2—6 ; XXVI, fig. 8 ; XXVII, 
figs. 2—5 ; XXVIII, fig. 1 ; XXIX, fig. 2 ; XXX, figs. 1, 3 ; XXXI, figs. 1, 3—6 ; 
XXXII, figs. 1, 7, 10; XXXIII, figs. 2—6. 
„ Zygapophyses, Part in, p. 88, PI. XXI, fig. 6. 
Aspect of. Part in, pp. 86, 87. 
Generation of. Part in, p. 86, PL XXVIII, fig, 1 ; XXXII, fig. 10. 
Osteological summary, Part in, pp. 106 — 9. 
Species of. Part in, pp. 109 — 127, Pis. XXII — XXXIII. 
„ acutirostris, Owen, Part, in, p. 121, PI. XXVIII, fig. 2. 
„ breviceps, Oioen, Part in, p. 109, PL XXIX. 
„ brachyspondylus, Owen, Part in, p. 127, PL XXXIII, figs. 3 — 6. 
„ communis, Conybeare, Vaxt ni, p. Ill, PL XXIV, figs. 2, 5, 5'; XXVIll, fig. 1 ; XXX, 
figs. 3, 4, 5. 
„ intermedins, Conybeare, Part in, p. 113, PL XXIV, fig. 7 ; XXX, figs. 1, 2. 
,, latifrons, Konig, Part in, p. 119, PL XXIII, fig. 6 ; XXVII, fig. 1. 
„ latimanus, Oiven, Part in, p. 126, PL XXXIII, figs. 2, 7. 
„ lonchiodon, Owen, Part in, p. 117, PI. XXIV, figs. 6, 6'; XXXI, figs. 4 — 7. 
,, longifrons, Owen, Part in, p. 118; PI. XXIII, figs. 1 — 5 ; XXIV, fig. 1 ; XXV, fig. 1 ; 
XXVI, fig. 1 ; XXVII, figs. 2-5. 
,, longirostris, Owen, Part in, p. 124, PL XXV, fig. 2 ; XXVIII, fig. 3 ; XXXII, figs. 7, 8, 9. 
„ platyodon, Conybeare, Part in, p. 115, PI. XXIV, figs. 4, 4' ; XXXI, figs. 1 — 3. 
„ tenuirostris, Conybeare, Part in, p. 122, PL XXIV, fig. 8 ; XXV, fig. 3 ; XXXII, figs. 1 — 6. 
PLESIOSAUE.US dolicbodeirus, Conybeare, Part in, pp. 1—11, Pis. I — IV. 
,, „ Caudal vertebrse. Part ni, p. 7, PL I, fig. 1 ; IV, figs. 3 — 9. 
,, ,, Cervical vertebrae. Part in, p. 3, PL III, figs. 1, 4 — 6. 
,, „ Cranial characters. Part in, p. 8, PI. II, fig. 1 ; HI, figs. 1 — 3. 
„ ,, Dorsal vertebrae. Part ni, p. 6, PL I, fig. 1 ; IV, figs. 1, 2. 
„ ,, Pectoral and pelvic limbs. Part in, p. 11, PL I, figs. 2, 3. 
,. „ Sacrum, Part in, p. 7, PL I, fig. 1. 
„ „ Vertebral ebaracters. Part in, p. 3, PL III ; IV. 
