80 ALLEN 



being 2 for each spine or ray, and sends outward numerous 

 cross-branches to the lateral trunks ; the two lateral dorsal 

 trunks communicate with the lateral lymphatic trunk through 

 the intermuscular or transverse vessels, and with the myelonal 

 trunk through the neural or interspinal vessels. The first neural 

 vessel passes between the skull and the first neural spine and 

 empties into the cranial lymphatic trunk. 



5. With Scorficenichlhys the ventral lymphatic trunk in front 

 of the anal fin is not a paired vessel as described by Trois. 

 Between the ventrals it expands into a large heart-shaped sinus 

 into which the ventral fin sinuses are discharged. They 

 receive the lymph from the ventral fins and are prolonged be- 

 tween the body myotomes and the ventral fin musculature to 

 end in the ventral lymphatic trunk. Two other branches have 

 their origin from between the superficial and profundus ab- 

 ductor muscles of the ventral fin. In the median line the ven- 

 tral lymphatic trunk penetrates between the superficial and pro- 

 fundus abductor muscles, and following along the lower side 

 of the pelvics terminates in the posterior end of the ventral 

 pericardial sinus. The ventral intermuscular or transverse' 

 vessels connect this trunk with the lateral lymphatic trunk. 



6. A profundus ventral lymphatic trunk was observed run- 

 ning along the inner surface of the body musculature parallel 

 with the main ventral lymphatic trunk. Connecting branches 

 were noticed between the two in the region of the ventral fins, 

 and it was also in communication with the abdominal sinus 

 through the intercostal vessels ; while anteriorly it emptied into 

 one of the pericardial sinuses. 



7. A large pectoral sinus is placed at the base of each pec- 

 toral ; dorsad it unites the lateral trunk and the abdominal sinus, 

 and ventrad it is prolonged to communicate with the ventral 

 pericardial sinus. Into the pectoral sinus is discharged a com- 

 mon trunk formed from the union of the external and internal 

 pectoral sinuses. These sinuses run along at the base of the fin 

 and receive connecting branches from the median pectoral sinus, 

 which traverses the basal canal of the rays and collects the 

 lymph from the fin. Trois is the only one to describe the pec- 

 toral lymphatics, and he represents the n>ain trunks in Loph/us 



