32(5 



CRl-rrACEOUS J.A.MI'JLLIUKAXCIIIA. 



.-^^r 



Fig. 8G. — Jnoceramus. A variety cnnncctinu^ 1. l,itni<ir<l,i witli [. involutus. Upper Chalk, probably Kent. 

 Sedgwick Museiiui Riijlit valve displnt'i'il. Posterior view, x J. 



'7^^- 



FiQ. 87. — .\nteri(ir view of specimen shown in Fig. 86. Natural size. 



