LATERAL CANAL SYSTEM OF SELACHIANS 



59 



Ep^. 



Sn.Cl. Ut.Cd. 





a.®*>«. 





"fr~l 



^* :.fes>i^^^^^^ - 



,8. 



'«^"C-:^*„ ■--■-1 . ■ :.5'{.='„c.''a - 









62 





Y 



Der. 





'» _ >®* 



Z.ar./Vv. 





I. Orb 



64 



Fig. 62 Transverse section of the sensory cord at the level of the pectoral 

 fin. Squalus, 28 mm. X 247. 



Fig. 63 Transverse section, the same specimen, posterior to the second dor- 

 sal fin. X 492. 



Fig. 64 Surface view of a 36 mm. specimen. Squalus. X 24. 



