110 BULLETIN OF THE BUREAU <>F FISHERIES. 



11. Small muscular branch. 



15. Direct afferent pseudobranchial artery. 



13. Connection between direct afferent pseudobranchial and hyoidean arteries. 

 I /.;. Efferent pseudobranchial artery or ophthalmic artery. I 



( l'>. Anastomosing trunk between the two ophthalmic arteries.) 



16. Carotid artery. 



17. Hyoopercular artery. 



Branch which divides into 19 and 20. 



19. To m. adductor mandibular 



20. Branch which joins the hyoidean artery. 



21. Muscular branch to adductor and levator operculi. 

 ..'. Divides into S3 and 34. 

 23. Supra-orbital branch. 

 .'4. Post-orbital branch. 

 .'.".. Internal carotid artery. 

 26. Carotis interna impar. 



Anterior cerebral artery. 

 Posterior cerebral artery. 

 9 External carotid artery. 



30. Artery to rectus externus and superior. 



31. Ocular artery. 



32. Artery to rectus interims and inferior. 

 S3. Small artery to membranes lining orbit. 

 34- Oblique artery. 



35. < llfacfory artery. 



36. Branch in region of maxilla. 

 .:; . Superior dental artery. 



II. S< nd efferent branchial artery. 



38. Fourth commissural artery. 



39. Nutrient artery to second gill. 



40. Nutrient artery to third gill. 



41. Coronary artery. 



4.'. Median hypobranchial artery. 

 - 43. Thyroid artery. 

 ;;. Muscular branch. 



4-t. Muscular branch at ventral end of clavicle. 

 ,"'.'. To ventral tin-. 



III. Third efferent branchial artery. 

 ■47. Fifth commissural artery. 



;,v. Nutrient artery to fourth gill. 



;.'/. Dorsal coronary artery. 



.10. Nutrient branch to rudimentary tilth branchial arch. 

 51. Sixth commissural artery. 

 ■I.'. Dorsal median hypobranchial artery 



IV. Fourth efferent branchial artery. 



;. Artery to superior pharyngeal teeth and membranes behind rudimentary fifth gill arcl 

 v. Coeliacomesenteric artery. 



55. First branch which sends out the following six branches: 

 .',>:. Right oesophageal artery. 



57. Right genital artery. 



58. Hepatic branch. 



■ • ( iastric and intestinal branches. 



60. Branch which anastomoses with '•''<'. 



61. Left -hepatic artery. 



