PANAMIC DEEP SEA ECHINI 



3'VEX \5 > / ^<S3Z 



30 \ / ^/ 31 



10 mm. 



Pig. 26. Dobocidaris panamensis. 



The rudimentary interainbulacral j)lates always make their appearance 

 against the face of tlie adjoining ocular (PI. 3, fig. 3), while the new 

 ambulacral jilates are formed between the ocular plate and the last 



FlO. 27. DoROCIDABIS PAXAMEXSIS. 



