A CIRCUM-INSULAR PALZOZOIC FAUNA. QI7 
Devonian alliance will have lived after it... The Chouteau fauna 
is a good illustration of a fauna with Carboniferous affinities liv- 
ing before the close of Devonian time, as divisions are usually 
shown. 
STUART WELLER. 
LABORATORY OF PALAONTOLOGIC GEOLOGY, 
UNIVERSITY OF CHICAGO. 
t An illustration of the persistence of a Devonian fauna is seen in the fauna of the 
Spring Creek Limestone near Batesville, Ark. See: The Recurrence of Devonian 
Fossils in Strata of Carboniferous Age. H.S. Williams, Am. Jour. Sci., Vol. XLIX., 
p- 94 (1895). 
