Jour. Sc. Coll. Vol. XVII. Art. 5. PI. //. 



Fie/. ZO. 



ocean 



Fin. 26. 



obl. int 



-7/i. pr 



ist. pr. hd . 



ant. 





/Wl& 



qst.pr. id. 







Yatsu-Histology of Lingula. 



Lith. f. Koshiba.. Tokyo. 



