Henry L. Bruner ts 
body; Pt., pterygoid bone; s. 0., posterior prolongation of the sinus orbitalis; 
v. j. i., vena jugularis interna. 
Fic. 2. Transverse section through the posterior part of the orbit of 
Monitor niloticus, to show the relations of the m. protrusor oculi and m. 
protrusor oculi accessorius. X 11. 
Fr., frontal bone; /7., lymph sinuses; m. c¢. S. 0., m. compressor sinus orbit- 
alis; it is represented only by a fascia under the bulbus in the region of the 
section; m. d. p. i., m. depressor palpebre inferioris; m. p. 0., m. protrusor 
oculi; m. p. 0. a., m. protrusor oculi accessorius; m. r. 7., m. rectus inferior; 
m. r. O., m. retractor oculi; m. r. s., m. rectus superior; Par., parietal bone; 
Ps., parasphenoid bone; Pt., pterygoid bone; Pitf., postfrontal bone; s., sinus 
orbitalis. 
