3 



Jtmorrs of tht- glascum of Comparattfat ^oiilogw 



AT HARVARD COLLEGE. 

 Vol. IX. No. 3. 



SELECTIONS 



FROM 



EMBRTOLOGICAL MONOGRAPHS. 



COMPILED BY 



ALEXANDER AGASSIZ, 

 WALTER FAXON, and E. L. MARK. 



III. 



ACALEPHS, AND 



By J. WALTER FEWIvES ; 



POLYPS, 



By E. L. mark. 



WITH THIRTEEN PLATES. 



CAMBRIDGE: 



PrtnteD for tlje jIHuBetim, 

 September, 1884. 



