SUulies On rnaiiin^ Oslracorls 



403 



Fig. LXX. — Ph. (Phitomedes) LiU/ehnrsi (0. O. Saus), $. — I. Riijlit valvp sci'ii from Ihe side: :!•,! >;. ::. Aiil./iioi- 

 purl ol llio lofl valvn seen I'rom i iside; 100 X. -i. Posterior part of liic Icfl valvf scon from inside; 100 >;. i. A pari 

 of the selvage of the ventral margin <if the rostrum; :i25 X. 5. A p;irt of the selvage just behind the rostral inoisur; 

 fiOO X. fi. Mediil InisUe from the lostrum; :")00 X. (All figures are dniwn from a speiimen determined by G. O. Sabs.) 



