PLATES XIV AND XIV A 
Isotelus brachycephalus sp. nov.; type. An entire individual, figured in two 
parts, reduced in size. The cephalon and the five anterior segments of the thorax 
are shown on plate XIV ; the pygidium and the three posterior segments of the 
thorax are shown on plate XIV A. The former presence of a genal spine is seen 
on the left side of the cephalon. The length of this spine is unknown. Parts 
of the reflexed lower margins of the free cheeks and of the pygidium are seen on 
the left side of the specimen. Found in the base of the Liberty or the top of the 
Waynesville member of the Richmond, at the Huffman Conservancy dam, 6 miles 
northeast of the center of Dayton, Ohio. Loaned by Arthur E. Morgan, Chief 
Engineer. 
