ERRATA. 



Page 24, line 7 fr. bot. for " Plate II" read " Plate VI."— P. 241 , 1. 18 fr. bot. for 

 "in" read " by."— P. 383, 1. 5 fr. top, for " 56° 24' 24" " read " 49° 57' 36"." 



Vol. xlii, p. 366, 1. 16 fr. top, for " trilobited" read " trilobate." 



