ERRAT.a IJV THE REFEREKCES TO THE PLATES. 



^*^ The volume having been printed sonic time before the plates were engraved, and even while 

 many of the figures were still to be delineated, several discrepancies occurred in the references, which 

 will be found rectified in the descriptions accompanying the plates. 



Page 6. PI. iii, fig. 3, sliouM be PI. ii, fig. 3; and PI. ii, fig. 1, should be PI. iii, Hg. 1. 



10. PI. iv A sliould be PI. iv (bis). 



11. MoDioLOPsis PRiMiGENius should refer to PI. iv (bis), fig. 2. 

 20. PI. V (bis) should be PI. v a. 



24. PI. i.x, the fig. 1 a, b, c, should be fig. 1, 2, B . and fig. 2. same plate, page 25, should be fig. 4. 



66. PI. xxii, the fig. 2 should be fig. 3, and fig. 3 should be fig. 2. 

 125 & 126. PI. xxxiv a should be PI. xxxiv (bis). 



129. PI. XXXV should be PI. xx.xv (bis). 



136. Steomatopora coscentrioa should refer also to Pi. xjcxrii a, iig. 1. 



171. LicHENALiA concentrica should refer also to PI. xxxvii A, fig. 2. 



187. PI. xli, the (ig. 3 should bo fig. 4. 



281. PI. Ivii should be PI. Iviii. 



300. PI, Ixvi should Ic PI. A Ixvi. 



o-')0. PI. Ixxxiv sliould be PI. Ixxxiii. 



J 



