Bulletin of the Museum of Comparative Zoology 

 AT HARVARD COLLEGE. 



Vol. XXIV. No. 1. 



ON URNATELLA GRACILIS. 



By. C. B. Davenport. 



/-^/ 



With Six Plates. 



CAMBRIDGE, U. S. A. : 



PRINTED FOR THE MUSEUM. 



Jaxuart, 1893. 



