DISTRIBUTION OF LYMPHATICS IN SCORPyENICIITIIYS 87 



12. DESCRIPTION OF THE FIGURES. 



Sco rpcen ichthys m a rm rat us . 



All of the figures were drawn to a scale from injected specimens. In the col- 

 ored figures the lymphatics are indicated by yellow and the veins by blue: while 

 in the other figures the veins are cross-barred and the lymphatics are drawn in 

 outline or stippled. 



Fig. 1. Represents a general lateral view of the head region of a small Scor- 

 pcenichthys ,' the skin being removed to show the superficial vessels of the body, 

 dorsal, ventral, and pectoral fins. X^- 



Fig. 2. Ventral view of the same specimen as above. Shows the superficial 

 vessels of the body, ventral, and pectoral tins. The left pectoral superficial ad- 

 ductor muscle is cut distad and turned toward the body to show the profundus 

 trunks. 



Fig. 2a. Is from a transverse section through a portion of the pectoral fin 

 near its base to show the termination of the pectoral fin vessels in the pectoral 

 fin sinus. 



Fig. 3. Shows a ventral view of a deeper dissection of a small Scorpcenich- 

 thys head. Most of the ventral musculature is removed as is also the left hyoid 

 arch, the left branchial arches, and the left pectoral fin. The right hyoid arch 

 is turned forward and outward and the branchiostegal rays are cut close to their 

 bases. In this figure the ventral aorta and its branches are cross-barred with 

 blue lines. Note especially the anterior branching of the ventral pericardial 

 sinus to the pharynx and the thyroid gland. There is undoubtedly some com- 

 munication in the region of the thyroid with a branch of the inferior jugular. 

 Xxff- 



Fig. 4. Deeper dissection of a small Scorpanichthys as seen from the left side. 

 The shoulder-girdle and pectoral fin are removed, as is also a portion of the 

 skull, suborbital stay, opercle, and the great lateral muscle. X %• 



Fig. 5. Dorsal view of the great superficial and profundus trunks and sinuses 

 of the right side of the head. Kidney, brain, and walls of the cranium drawn 

 to show the topography. The entrance of the cephalic sinus into the jugular, 

 lying in front of the VII nerve and directly behind the prootic process, is dis- 

 tinctly shown. Same specimen as Fig. 4. Natural size. 



Fig. 6. Lymphatic trunks and sinuses in the region of the heart of a very 

 large Scorpamichthys as seen from the left side. X *A- 

 Figs. 7 to 10 have been changed to text-figures under S, pp. 73, 74, 76 and 77. 



13. ABBREVIATIONS USED IN THE PLATE AND TEXT-FIGURES. 



A or P prefixed to an abbreviation signifies anterior or posterior; R or L, 



right or left. A series is numbered from cephalad to caudad. 



Abd.S. Abdominal sinus. 



A.Br.A.(\-i) Afferent branchial trunks. 



Add.M. Adductor mandibular. 



Add.P.A. Adductor arcus palatini. 



A. Gas. V. Anterior gastric or oesophagus veins. 



