/ 



// 





THE DANISH INGOLF-EXPEDITION. 



VOLUME IV. 



2. 



ECHINOIDEA. 



(PART II.) 



BY 



TH. MORTENSEN. 



WITH 19 PLATES AND 27 FIGURE.S IN THE TEXT. 



■>^:2><f<- 



" COPENHAGEN. 



PRINTED BY BIANCO LUNO. 

 1907. 





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