Hi i.i.KTix A. M. X. U. 



Vou XXIV, PLATE XXII. 



EUBAL.ENA GLACIALIS (BONN.). 



Cervical vertebra : A-C, from type of Balcena cisarctica Cope (A, left side; B, 

 right side; C, centra, from left side). D-H, Provincetown specimen (D, from 

 above; E, from front; F, left side; G, from below; H, from behind). 



