EEEATA. 



Page 85, 15th line from the bottom, for "flame," read vein. 



Page 109, 3d line from the top, for " morraines," read moraines. 



Page 118, 14th liiie from the bottom, for " Succaroitlal," read Sacclmroidal. 



Page 119, 5th Hue from the bottom, for " desired be," read be desired. 



Page 135, 8th line from the top, for " water's bed," read watershed. 



Page 161, 13th line from the bottom, for " is such," read in such. 



Page 230, llth line from the top, for " histrix " hystrix. 



Page 275, 2il line from the bottom, for " Archiocidarin," read Archceoeidaris. 



Page 289, 20th line from the bottom, for " two hundred," read two hundred and sixty. 



Page 302, 15th line from the.bottom, for "to which," read for which. 



Page 312, 7th line from the top. for " ventricoso," read ventricosa. 



Page 331, 18th line from the bottom, for "amulacra," read ambulacra. 



Page 336, 25th line from the bottom, for " apendages," read appendages. 



Page 350, 14th line from the top, and 12th line from the bottom ; and also page 352, 3d line from the 



top, for auxiliary," read axillary. 



Page 379, 22d line from the bottom, for " speciman." read specimen. 

 Page 451, 18th line from the top, for " species," read species. 

 Page 529, 14th line from the bottom; for "semi-cirnlar," read semi-circular. 

 Page 552, 2d line from the bottom, for " rnal," read anal. 

 Page 555, 3d line from the bottom, for "Platycrin? " read Platycrinus. 

 Page 608, 7th and 9th line from the top, for " Temnochiliw," read Temnocheilus. 



