58 THE VOYAGE OF H.M.S. CHALLENGER. 



Plate. Fig. No. of Times 



Magnified. 



XII. 10. Seventh Section. — Througli fore part of eyeballs, . . . 6f diam. 



XIII. 1. Same series continued. — Eiglith Section. — Through hind part 



of eyeballs, ......... 6-1 ,, 



,, 2. Ninth Section. — Through back of orbits, .... 6-| 



„ 3. Tenth Section. — Through pituitary space, . . . . 6f ,, 



„ 4. Eleventh Section. — Through fore part of ear-sacs, . . . 6| 

 „ 5. Twelfth Section. — Through widest part of ear-sacs and 



tympanic cavity, . . . . . . . . 6|- ,, 



,, 5a. Part of same, ......... 26?- 



„ 6. Thirteenth Section. — Through occipital arch, . ■ . . 6| ,, 



