SEA-FISHERIES LABORATORY. 383 



Par. — Parietal. 



Pa. S. — Parasphenoid. 



P. Br. 1 — Pharyngo-branchial of the first branchial arch articulating with 

 the skull. 



P. J5r. 2-4 — Pharyngo-branchials of the branchial arches two to four, form- 

 ing the superior pharyngeal bone (S. Ph.). 



P. C. — Paroccipital condyle. 



P. CI. — Post-clavicle. 



Per . — Pericardium . 



P. J 7 .— Pectoral fin. 



ph. x. 1 \ 



7 — RR. pharyngei of the first, second and third branchial trunks of 



P n - x - l f the vagus. 



ph. x. 3 J 



PI. J 7 .— Pelvic fin. 



PI. F.' — Base of right pelvic fin. 



P. Mx. — Premaxilla. 



7) 1XOS I 



\ — Right and left posterior nostrils. 

 p. nos. 1 j 



P. Op. — Pre-operculum. 



post. 1 \ 



post. 2 ( — RR. post-trematici of the first, second, third, and fourth branchial 



post. 3 [ trunks of the vagus. 



post. 4 J 



post. vii. — R. post-trematicus facialis. 



post. ix. — R. post-trematicus glossopharyngei. 



post. cr. — Crista acustica ampullae posterioris. 



pre. 1. \ 



pre. 2. j — RR. pre-trematiei of the first, second, third and fourth 

 pre. g. [ branchial trunks of the vagus. 



pre. 4. 



Pr. O.— Prootic. 



Ps. Br. — Pseudobranch. 



p. s. c. — Posterior semicircular canal. 



Pt. — Pterygoid. 



PL 0.— Pterotic. 



P. Tp. — Post-temporal. 



P. Zy. — Posterior zygapophysis. 



Qu. — Quadrate. 



r. v. — Root of N. trigeminus. 



r. 1. vii.— Dorsal (sensory) roots of N. facialis. 



