FIG. 
307- 
308. 
309. 
310. 
311. 
312. 
313. 
314. 
315. 
316. 
317. 
318. 
319. 
320, 
321. 
322, 
323. 
324. 
325. 
326. 
327. 
328, 
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330. 
331. 
332. 
333+ 
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335+ 
37 
338. 
339: 
340. 
341. 
342. 
343- 
LIST OF ILLUSTRATIONS, 
Lepidosiren (after Graham Kerr), showing (22.7) pectoral 
fin and the tufted pelvic fin (Pv.f,) of the mature male 
Skeleton of Ceratodus fin—from Gegenbaur . 
Head region of Protopferus—from W. N, Parker . 
Larva of Protopterus—after Budgett . . 
Larva of Lepédosiren—after Graham Kerr . : 
The edible frog (Rana esculenta) j i 
Vertebral column and pelvic girdle of bull- -frog A 
Skull of frog—upper and lower surface—after W. K. Parker 
Skeleton of frog. The half of the pectoral girdle, and fore- 
and hind-limb of the right side are not shown . . 
Pectoral girdle of Rana esculenta—after Ecker , 
Side view of frog’s pelvis—after Ecker . F 
Brain of frog—after Wiedersheim . . . . 
Nervous system of frog—after Ecker . . . 
Arterial system of frog . : : . ’ 
Venous system of frog 
Urogenital system of male edible frog—after Ecker . 
Urogenital system of female frog—after Ecker . 
Division of frog’s ovum—after Ecker 
Section of frog embryo—after Ziegler’s model and Marshall 
Dissection of tadpole—after Milnes Marshall and Bles ‘ 
Life history of a frog—after Brehm . i ‘ 
Cecilian (/chthyophis) with eggs—after Sarasin ‘ 
External appearance of tortoise 
Skull of turtle és F 
Carapace of tortoise 
Pectoral girdle of a Chelonian 
Internal view of bones of the plastron of the Greek tortoise 
Scales on ventral surface of plastron of Greek tortoise 
Infernal view of skeleton of tortoise . ‘ 
Dissection of chelonian heart—after Huxley . . 
Heart and associated vessels of tortoise—after Nuhn . 
Hyoid apparatus of a chelonian % f 
Lateral view of brain of Hatteria punctata—after Osawa 
Hatleria or Sphenodon—after Hayek - . 
Side view of skull of Lacerta—after W. K. Parker . 3 
Heart and associated vessels of a lizard—after Nuhn P 
Lung of Chameleo vulgaris, showing air-sacs—after Wieders- 
heim. . . . : 
344. Anterior view of python’ s vertebra r ‘ ‘ 
345. Posterior view of python’s vertebra . ‘ ‘ 
346. Snake’s head—after Nuhn .. - . 
347. Skull of grass-snake—from W. K. Parker . : 
348. Lower surface of skull of a young crocodile . . : 
349. Cervical vertebra of crocodile . . . . 
350. Crocodile’s skull from dorsal surface . . 
351. Pectoral girdle of-crocodile . : . 
352. Half of the pelvic girdle of a young crocodile . : 
353. Origin of amnion and allantois—after Balfour ° 
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