No. 498] THE CAUDATE AMPHIBIA 



371 



In an essay now in press on "The Lateral Line Organs 

 in Extinct Amphibia" the writer has called especial 

 attention to the character of the lateral line organs as 

 they are preserved in the single specimen of a branchi- 

 osaurian, Micrerpeton, from the Coal Measures of Illinois. 

 A restoration of this form has been attempted in Fig. 1. 

 The animal, as preserved, measures only 4<) millimeters. 

 It is apparently an adult, as there are no evidences of 

 branchiaB and the limb bones are well formed. The 

 spider shown in the restoration is a composite and is 



