FIRST SERIES NO. 81 . AUGUST 1, 1924 
UNIVERSITY OF IOWA 
STUDIES 
STUDIES IN NATURAL 
HISTORY 
_ VOLUME X NUMBER 4 _ 
REPORTS ON CERTAIN INVERTEBRATES 
AND FISHES 
of the Barbados-Antigua Expedition of 1918 
PUBLISHED BY THE UNIVERSITY, IOWA CITY 
- Issued semi-monthly throughout = year. Entered at the ye office at Iowa City, 
Towa, as second clas ass matter. ceptance for mailing at ial rate of postage 
provided for in section 1103, Ac re of 1917, ation aed huis 3. P1918. 
