! Marine Invar tebrates 



W.: . \ 



DESCRIPTIONS OF A NEW GENUS AND SPECIES OF 

 ISOPOD CRUSTACEAN OF THE FAMILY IDOTHE- 

 IDjE FROM THE MOUTH OF THE RIO DE LA 

 PLATA, ARGENTINA, SOUTH AMERICA 



BY 



HARRIET RICHARDSON 



Collaborator, Division of Marine Invertebrates, U. S. National Museum 



No. 1811. — From the Proceedings of the United States National Museum, 

 Vol. 40, pages 169-171 



Published April 10, 1911 



Washington 

 Government Printing Office 

 1911 



