Am. Jour. Set. \^ol XXXVII. 

 PI. I. 



4,4 





LUh afli^VKcllo^ii & I'-e 



TRJLOBITES <^ recent Aniirial.s aUied Lo LKem. i^xauiSt }f.»-ffbrd, Cor^'^ 

 TromBucklaTui's'Bridtrewater Treatise. 



