'Sucvri.&amJ&orSa. Vk.37,MsMj4- 



Fig.l 



^y,raZlwod S °' MJk ° rU/ ' tS '' U \ AMPHIOXUS LANCEOLATUS. gonmiie 



* &d$ e of left rri?t/tfilca.r 



■>_'.'. ;//.'/.V 



7 w™ rtM,, -* HETEROPLEURON CULTELLUM. 



■ 



aonaxk of right suit. 

 "(shewing Vi/ozLgh) A S Y IV 



METRON , LUCAYANUM. 

 tdge. of left metapleur 



-,q rigkL mjttapLeiLr 



qonaxis of rig?t£ side 

 fshex'ing through ■ 



HETEROPLEURON BASS^NUM. 



. 



