IfiiToirs of tijc IITttscum of Comparatibf ^oiilocju 



AT HARVARD COLLEGE. 

 Vol. IX. No. 8. 



SELECTIONS 



FROM 



EMBRYOLOGICAL MONOGRAPHS. 



COMPILED BY 



ALEXANDER AGASSIZ, 

 WALTER FAXON, and E. L. MARK. 



III. 



ACALEPHS, AND POLYPS, 



By J. WALTER FEWKES ; Br E. L. MARK. 



WITH THIRTEEN PLATES. 



CAMBRIDGE: 



|3n'ntctr for tfje fHuscutn. 

 September, 1884. 



