104 



PEOF. W. K. PAEKEE ON THE STEUCTUEE OF 



oc. c. Occipital condyle. 

 op. Opisthotic. 

 o.s. Orbitosphenoid. 

 of. p. Otic process. 

 p. Parietal. 

 pa. Palatine. 

 pa.s. Parasphenoid. 

 p. h.c.f. Posterior basicranial fontanelle. 

 p. e. Middle ethmoid. 

 p.f. Prefrontal. 

 pg. Pterygoid. 

 pr.o. Prootic. 

 p.s. Presphenoid. 

 p. s. c. Posterior semicircular canal. 

 pt.o. Postorbital. 



DESCEIPTION OF THE PLATES. 



PLATE XV. 



Fig. 1. Chamwleo vulgaris: ripe young, 1^ inch long, head | inch, tail |. The skull, 



side view, Xl3^ diameters. 

 Fig. 2. The same, lower view, Xl3^ diam. 

 Fig. 3. The same, upper view, Xlo^ diam. 

 Fig. 4. The same, end view, Xl3J diam. 

 Fig. 5. The hyo-branchial arches, upper view, Xl3^ diam. 

 Fig. 6. The mandible, inner view, x 13^ diam. 

 Fig. 7. The endocranium, side view, XloJ diam. 

 Fig. 8. The same, upper view, X 13^ diam. 



PLATE XVI. 



Fig. 1. Chammleo vulgaris : adult female. The skull, side view, X 3| diam. 



Fig. 2. The same, lower view, X 3| diam. 



Fi 



3. The same, upper view, x 3| diam. 



4. The same, end view, X 3J diam. 

 Fig. 5. The same species: large male. 



vertical section, x 3| diam. 

 The same. Hyo-branchial arches, upper view, X 3| diam. 

 The same. Quadrate bone and columella, X 71 diam. 



Fig 



Fig. 

 Fig. 



The skull and brain in situ, longitudinally 



