214 



NKNV VOUK STATi: MrSKr'M 



s |» i r i f (' r () i (1 (' s [ti«»". Iii4|. a laruc rotund smooth species 

 willi \al\('s nearly (Mjuallv conNcx and a median depression in 

 the anterior ]>oilion ol" ilie pedicle \ah'e; (' r \ p t o n e 1 1 a 

 11 n (' k 1 a e n i | 11^. Hi.~)|. a lei-ebratnloid shell with sti'onj»ly 

 incni'N'ed beak, angular nnd)()nal slopes, pnnetate shell structure 

 and comjiarativclv small and jj,ibl)ous forui ; T r o jt i d o 1 e \) t u s 

 earinatus | tl<i'. Hl(i|, a st ro]>homenoid shell \\\\]i coarse. 



/ 



/-• 



"-"ywji 



X. 



""'''^^. 



>^ 



Fif,'. 160 Spirifer {>ranulosus 



J 



I 



rounded ]dications stronj^est in the center; C a m a r o t o e e li i a 

 ]) r o 1 i f i e a \iv^. 1(17], a rhynchonelloid shell \\itli slender 

 an<^ular i)li('ations, shallow median sinus which is genll.v curveil 

 uj)wai-d in front, with nearly strai<>ht or slightly curved lu^dv, 

 ami of neai-ly (Mpial lenj^th and breadth in y()un<>- sixcimens. 



Anion*;' the c(Humoii ])(decyj)()ds are: Xucula bel li- 

 st r i a t a I ti^. 1(>S|, characterized by tlie regular curve of the 

 basal mai-i^in, the jiosilion of (he beak, one fourth the length 



