448 Journal of Comparative Neurology. 



m. lev. op. — branch of r. opercularis profundus VII for m. levator 

 operculi. 



m. lev. p. — m. levator arcus palatini. 



7)1. I. Op. — m. levator operculi. 



VI. n. V. — motor nucleus of the trigeminus. 



m. n. F/— motor nucleus of the abducens. 



?n. n. VII—ra.o'iOT nucleus of the facialis. 



nin. I. to nin. j. — organs of the mandibular canal. 



m. 0. d. — branch of third branchial n. for m. obliquus dorsalis. 



tn. 0. d. p. — branch of fourth truncus branchialis vagi for m. obli- 

 quus dorsalis posterior. 



mot. IX. — motor root of the glossopharyngeus. 



mot. V. — motor root of the trigeminus. 



tnot. VII. — motor root of the facialis. 



mot. X. — motor root of the vagus. 



7n. p. c. i. — them, pharyngo-clavicularis internus. 



m. ph. c. e. — branch of vagus for m. pharyngo-clavicularis extemus. 



tn. ph. c. i. — branch of vagus for m. pharyngo-clavicularis internus. 



m. ph. t. — branch of vagus for m. pharyngeus transversus. 



fn. p. I. — mandibular pit-line. 



m. p. I. to 711. p. 4. — pores of the mandibular canal. 



;;;. f, d. — brauch of vagus for m. retractor arcus branchii dorsalis. 



7n. trap. — trapezius muscle (m. protractor scapulae). 



7/1. tr. d. — branch of vagus for m. transversus dorsalis. 



711. VII. I. to 711. VII. /.?.— branches of the r. mandibularis VII. 



771.x. V. — ramus maxillaris V. 



m. I. to w. J. — organs of the main lateral line canal of the head. 



m. 4. — organ of the occipital commissure. 



NA. — nasal bone. 



n. a. — nucleus ambiguus. 



n. a. a. — anterior nasal aperture. 



n. a. p. — posterior nasal aperture. 



n.fn. — nucleus funiculi. 



n. I. — the olfactory nerve. 



n. II. — the optic nerve. 



n. III. — the oculomotor nerve. 



oc. c. — occipital commissure of lateral line system. 



0. i. — m. obliquus inferior. 



0. IX. — apparent (superficial) origin of the IX nerve. 



o. i. I to 0. i. 75. — organs of the infra-orbital lateral line. 



0. I. — optic lobe. 



0. 711. VII. — apparent origin of the motor VII nerve. 



OP. — opercular bone. 



oph. — ramus ophthalmicus trigemini. 



op. p. VII. — ramus opercularis profundus facialis. 



op. p. 1. to op. p. 6. — pores of the opercular canal. 



