Bulletin of the Museum of Comparative Zoédlogy 
AT HARVARD COLLEGE. 
Wor oe “Noval” 
NEW AND OLD SILURIAN TRILOBITES FROM SOUTH- 
EASTERN WISCONSIN, WITH NOTES ON THE 
GENERA OF THE ILLAENIDAE. 
By Percy E. Raymonp. 
With Four Puares. 
CAMBRIDGE, MASS., U. S. A.: 
PRINTED FOR THE MUSEUM. 
JANUARY, 1916. 
