U. S. NATIONAL MUSEUM 



BULLETIN 181 PLATE 38 



V 



J;; 



16 



f« 



^k 



^^ 



?*« 



11 



\V- 



V2 



15 



'^ 



s 



'---x 



21 



.^■j 



24 



CYCLOPHORID MOLLUSKS of AMERICA. 

 FOR EXPLANATION OF PLATE SEE PAGE 200. 



