CORRECTIONS AND OBSERVATIONS. 
Page 4, note, for besuperseded, read be superseded. 
5, line 3, after curved, add depressed. 
22, last line but 3, for catena, read Catena 
26, line 23, for pectenifera,reod pectinifera. 
31, last line but 1,/or comprehended, read combined. 
32, after the name, add Tab. CCCCXXV. 
Obs.-— The specific name of ANOMIAsfrmfa must be changed, 
striata having been before employed for a recent species : 
we propose lineata as the name for the fossil. 
36, line 13, for Figs. 3 and 4, read Fig. 3. 
39, line 9, add Enel. Meth. t. 258,/. 2. 
50, line 8, for 6, read 5. 
54, line 9 from the bottom, for of the, read of this. 
54, for thin, read their. 
63, line 10 from bottom, for credulated grove, readcrenulated groove. 
64*, tab. 444. The figures upon the plate are incorrect : for 2, read 5 ; 
for 3, read 6 ;/or 5, read 2 ; for 6, read 3. 
72, last line but 1 ,/or Enomphalus, read Euomphalus. 
84, last line but 2, for Bristol, read Dublin. 
90, line 2, for 1, read 2. 
90, last line but 1,/or Bristol, read Dublin. 
109, line 10, for tab. read vol. 
114, line 3, for CCCCLXII , read CCCCLXXII. 
114, line 14 , for CCCCLXXI .read CCCCLXXII. 
129. Obs. — The fossils described as coming from Cork are many of 
them from near Dublin , out of a mixed collection. — The same 
species are found at both places. 
134, line 13, for nanus, read Nanus. 
