EXPLANATION OF PLATES. 



All figures .are reconstruction drawings from sagittal sections of Spelerpes hi- 

 linedtns. 



Tlie colors employed follow the scheme adopted by Strong, viz. : 

 Black for lateral line {also for optic n), Pink for fasciculus communis, 

 Yellow for general cutaneous, Blue for motor. 



IT. . . 

 III. . . 

 III. ob. inf. 

 III. rt. i. 

 III. rt. inf. 

 III. rt. su. 

 I V. ob. su. 

 Va . . 

 Va^ . . 

 TV . . 

 V0 .. . 



Vy . . 



vs . . 



Fe . . 



V.l.n. . 

 V. I. na. . 

 V. m. na. 

 V. md. . 

 V. md. ex. 

 V. md. i. 

 V. mx. . 

 V. opt. . 

 V. rx. 



V. rx. mot. 



VI. . . 

 VI. ret. bl. 



VI rt. ex. 



VI. rx. viot. 



VII hue. 



VII. hoi. 



VII. hoi-md 

 VII. md. ex 

 VII. md. ex.' 



List of Abbreviations. 



Opticus. 



Oculomotorius 



Branch of III. to ni. obliquus inferior. 



" " " rectus internus. 



•■ inferior. 



" " " " superior. 



Trochlearis to m. obliquus superior. 

 Dorsal branch from ophthalmicus trigemini. 

 Small branch of To. (follows m. rectus superior). 



" " " (to skin of dorsum). 



Branch of r. mandibularis V. (to m. masseter). 



" " " " (to ra. temporalis). 



" " " " (to skin posterior to angle of jaw). 



" " " " (to skin of lower lip). 



Erroneously engraved in Fig. 1 for V. I. na. 

 Ramus lateralis narium. 



" medialis " 



" mandibularis trigemini. 



" " " externus trigemini. 



" " " internus 



" maxillaris trigemini. 



" ophthalmicus trigemini. 

 Ascending root of the trigeminus. 

 Motor 

 Abducens. 

 Branch of VI. to m. retractor bulbi. 



" " " rectus externus. 



Erroneously engraved in Fig. 1 for VII. rx. mot. 

 Ramus buccalis facialis. 



" hyoideus " 



" hyomandibularis facialis. 

 Branch of ramus m.mdibularis externus (or mentalis) facialis. 



