APPENDIX II . 



ERRATA AND ADDENDA. 



The paging after page 38 should be as follows : — Page 37 should be 

 39, 38 should be 40, 39 should be 41, 40 should be 42. 



Page 26, line 4. For " Dr. H. P. Brady" read " Dr. H. B. Brady." 

 ,, 29, line 5. For " Convolvulus bidentatus" read " Conovulus biden- 



tatus." 

 „ 29, line 18. For " Lcuna divaricata" read " Lacuna divaricata." 

 ,, 2g, line 20. For " Lacuna palidaul" read " Lacuna palidula." 

 ,, 30, line 15. For " scalaria Turtonis" read '' Scalaria Turtonis" 

 „ 31, line 4. For " Murex erinaceous" read " Murex erinaceus." 

 ,, 32. line 29. For"fiLus adriaticus var. ovalis" read " Mytilus 



adriaticus, var. ovalis." (In some copies only.) 

 ,, 33, line 10. For " Cardlam pygmceum" read " Cardium pygmoeum.' n 

 ,, 34, line 36. For " Thracia pubescans" read " Thracia Pubescens." 

 „ 35, line 12. For " Gastrochcenia modiolina 1 ' 1 read " Gastrochcena mo- 



diolina. 

 „ 35. After Terebella conchilegia, add 



Echinus miliaris, Leske. Very abundant in the Thracia convexa zone 

 of the Belfast Estuarine Clay. Near the upper limit of this zone I found a 

 bed marked by a closely-packed layer of the shells of this urchin. The 

 shells are of large size. The species still lives abundantly in our bay. 



Amphidotus cordatus, Pennant. Specimens of this " heart urchin " 

 are scattered throughout the Thracia convexa zone in the Belfast bed, but 

 not plentifully. This species occurs on the County Down coast, but I am 

 not aware of its living in Belfast Lough. A sandy bottom is the habitat 

 usually assigned to this urchin, but our fossil specimens must have lived on 

 a bottom entirely muddy. 



