SEA-FISHERIES LABORATORY. 385 



r. st. x. — R. supratemporalis vagi. 



r. v. 1. — R. ventralis of the first spinal nerve -f- an anastomosis from the 

 second. 



T. V. .Z. 1 ) 



[ Motor branches of the brachial plexus. 

 r. v. I. 2 J 



r. v. I. 3 — Motor 

 r. v. 1A — Sensory 



- branches of the brachial plexus to the pectoral fin. 



v. 



o 



-Anastomosis between RR. ventrales of the first two spinal 

 nerves. 



r, v. 2-\-3. — Fused RR. ventrales of spinal nerves 2 and 3. 



r. v. 2-\-3.' — 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. 



rx. b. — Radix brevis. 



rx. I. — Radix longa ganglii ciliaris (accompanied by sympathetic). 



sac. — Sacculus. 



Sc. — Scapula. 



S. C. — Spinal canal. 



S. CI. — Supra-clavicle. 



Sin. V. — Sinus venosus. 



S k. —Outline of skull. 



S. O. — Supra-occipital. 



s. o. 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. 13 — Thirteenth spinal nerve. 



Sp. 0. — Sphenotic. 



S. B. — Strengthening ridges of the vertebral centra. 



s. t. c. — Supratemporal portion of the lateral sensory canal. 



sup. c. — Right supraorbital sensory canal. 



SILT) C * I 



' u \ — Vestiges of the left supraorbital sensory canal. 

 Sy. — Symplectic. 



First, second and third Trunci branchiales vagi. 



DD 



