ERRATUM. 
Through an oversight for which the author was not responsible, the cuts 
for Figs. 5 and 6 of Dr. Eastman’s article on p. 766 of the October number 
were interchanged. The lowermost figure is the dorso-median plate of 
Titanichthys clarkii Newb., lacking the carinal instead of “cranial” 
process, and is reduced ,}, instead of }; natural size. 
