DEVELOPMENT OF THE SKULL IN THE CROCODIDIA. 307 
Fig. 6. The same (2nd section), behind external nostrils, x 8 diam. 
Fig. 7. The same (3rd section), through middle of nasal capsule, x 8 diam. 
Fig. 8. The same (4th section), through turbinal folds, x 8 diam. 
Fig. 9. The same (5th section), through rhinencephalic recéss, x 8 diam. 
Fig. 10. The same (6th section), through antorbital wall, x 8 diam. 
PLATE LXVII. 
Fig. 1. Alligator mississipensis (as in last Plate, 7th section). Through fore part of 
eyeball, x 8 diam. 
Fig. 2. The same (8th section), through orbito-sphenoids, x 8 diam. 
Fig. 3. The same (9th section), through middle part of eyeballs, x 8 diam. 
Fig. 4. The same (10th section), through hind part of eyeballs, x 8 diam. 
Fig. 5. The same (11th section, part), through prepituitary region, x 8 diam. 
Fig. 6. The same (12th section, part), through pituitary region, x 8 diam. 
Fig. 7. The same (13th section), through alisphenoid, x 8 diam. 
Fig. 8. The same (14th section), through auditory capsules, x 8 diam. 
PLATE LXVIII. 
Fig. 1. Alligator mississipensis (2nd Stage). Additional ( partial) view of subhorizontal 
section of the head (as in Pl. LXIV. figs. 1-4), No. v, through first cleft and 
first and second arches, x 18 diam. 
Fig. 2. The same (No. vi), a similar section, x 18 diam. 
Fig. 3. The same (No. vit), through notochord and pituitary body, x 18 diam. 
Fig. 4. The same (No. vu), through quadrate and hyoid, x 18 diam. 
Fig. 5. The same (No. 1x), through hinge of mandible, x 18 diam. 
Fig. 6. The same (No. x), a similar section, higher up, X 18 diam. 
Fig. 7. The same (No. x1), through Meckel’s cartilage and hyoid, x 18 diam. 
Fig. 8. The same (No. x11), through the same parts, higher up, X 18 diam. 
Fig. 9, The same embryo. Outer view of quadrate, part of mandible, and hyoid arch, 
x 16 diam. 
Fig. 10. Crocodilus palustris (3rd Stage): 13 inch long. The same arches, x 12 diam. 
Fig. 11. Part of same object, x 24 diam. 
Fig. 12. The same species (4th Stage); embryo, 34 inches long. The same arches, 
outer view, X 7+ diam. 
Fig. 13. The same object, inner view, x 71. 
Fig. 14. Part of same object, inner view, x 144 diam. 
Fig. 15. Alligator mississipensis (5th Stage): embryo, 44 inches long. Hyoid arch, 
inner view, X 12 diam. 
. Part of hyoid arch of another specimen of same, x 12 diam. 
