98 



THE ELASMOBRANCH FISHES 



Fig. 99. Model of muscle fibers between two myosepta, Squalus suchlii. (From Coles.) 



en., extension of myosepta forming cone; d.a., dorsal aorta; d.vm., dorsal vertebromuscu- 

 lar artery; i., intercostal artery ; i.b., intercostal branches to preceding segments; L., lateral 

 bundle; U., lateral line fold; U.', fold between lateral and ventral musculature; ms., myo- 

 septa ; rn., renal artery ; V^, F.,, V^, bends in myosepta. 



