129 



traversed the trigemino-facialis chamber; and there is, in each case, 

 no branch of the vessel x traversing the canal. On the other side 

 of the one specimen of Scorpaena, the only vessel that traverses the 

 canal through the hyoraandibular that is not definitely either a vein 

 or a lymphatic is a branch of the vessel x, and the main vessel x is 

 connected with the external carotid, in this same region, by a short 

 commissural vessel. The conditions on this side of the head of this 



acer op 



ec peer hop eal eall 



ahd ahy ec s.ahy Ihbr \ ^ta > „ \ , 



aal aaJT mhbr 



Fig. 5. Lateral view of the pseudobranchial, branchial and carotid arteries in 

 Amia calva ; the dorsal aorta swung upward and appearing as in dorsal view. 



40 mm. Scorpaena are accordingly similar to those found in the 

 45 mm. specimen examined in connection with my earlier work. 

 A facialis branch of the external carotid accordingly exists in these 

 fishes, as in Esox, Salmo and Gadus, but the conditions are compli- 

 cated and obscured by its relations to the vessel x. 



This completes the descriptions of the arteries in the teleosts here 

 under consideration so far as I have as yet investigated them, but 

 before their homologies are discussed it will be best to describe the 



Anat. Anz. Bd. 41. Aufsätze. 9 



