241 
r. st. x,—R. supratemporalis vagi. 
v. 1.—R. ventralis of the first spinal nerve + an anastomosis from the 
second. 
Tad. 12 ) : 
13 j Motor branches of the brachial plexus. 
v. 1.8 —Motor ) 
= aes j branches of the brachial plexus to the pectoral fin. 
r. v. 2..—Anastomosis between RR. ventrales of the first two spinal 
nerves. 
r. v. 2+ 38.—Fused RR. ventrales of spinal nerves 2 and 3. 
r. v. 2-+-8.‘’—Motor branch sending an anastomosis to R. ventralis 4. 
r. v. 2-+ 3’,—Sensory nerve to pectoral fin. 
r. v. 2—5.—RR. ventrales of spinal nerves 2 to 5. 
r. v. b+c.—R. ventralis of first spinal nerve. 
re. b.—Radix brevis. 
rx. .—Radix longa ganglii ciliaris (accompanied by sympathetic). 
sac.—Sacculus. 
Sc.—Scapula. 
S. C.—Spinal canal. 
S. Cl.—Supra-clavicle. 
Sin. V.—Sinus venosus. 
Sk.—Outline of skull. 
S. O.—Supra-occipital. 
s. 0. c.—Supra-orbital commissure between the two supra-orbital sensory 
canals. 
S. Op.—Sub-operculum. 
S. Ph.—Superior pharyngeal bone of the eyeless side intact. The numbers 
denote the branchial arches to which its constituents belong. 
Spl.—Spleen. 
Sp. N.8—Thirteenth spinal nerve 
Sp. O.—Sphenotic. 
S. R.—Strengthening ridges of the vertebral centra. 
s. t. c.—Supratemporal portion of the lateral sensory canal. 
sup. ¢e.—Right supraorbital sensory canal. 
sup. ¢.! 
| vestiges of the left supraorbital sensory canal. 
sup. c.” 
Sy.—Symplectic. 
ey Ede LG 
t. x. 2. }—-First, second and third Trunci branchiales vagi. 
t. w. 3. 
1 
