ERRATA. 



The following more important errors are noticed. These and others 

 will be corrected in another edition. 



Page 184. The foot note refers to Tliamnograptus, the * being omitted in the proper 



place. 

 279. Under figures 1 and 2 of Tropidoleptus, transpose the words ventral and 



dorsal . 

 309. Under the Genus Gomphocystites. after the words polygonal plates, add, 



spirally arranged. 

 323. Under Eucalyptocrinus crassus, last line but one of description, for 



"plates" read rays. 

 366. For Plate 16 read Plate 15. 



373. Last line of second paragraph, after the word ventral add valve. 

 388. Fourth line of foot note, for Lysingothyris read Syringothyris. 

 395. Fifth line, for synonimes read synonymes. 

 395. Under ZOOPHYTA, fifth line, for Diphyllum read Diplophyllum. 



Explanations of Plate 10 (1), under Glyptocrinus nobilis, transpose Glyptocri- 

 Nus siPHONATus, with reference to pages, to line below Glyptocrinus 

 ARMOScs. See also page 396. 



Explanations of Plate 16 (7), for Trochoceras costatum read Trochoceras notum. 



