ERRATA 



Page 117, line 16, foi- "volutia" read "veletia." 



,, ,, Htte 2q, for " Retuagiri " read " Ratuagiri." 



,, „ line 2°, for " Paugina " read "Pangim." 

 Page 119, line 6, for " phegedina " read "phagedina." 

 Page 148, line 20 {from bottom), for "V. ristata" read "V. cristata. " 

 Page 149, line T, for " Planorbis cristata" read " Planorbis crista." 

 Page 157, line 2^, for "arbustorum" read " lapicida." 

 Page 260, line 20, for "Robert" read "Roland." 

 Page 268, liiie i^ from below, after "American species" insert " Amnicola 



brownii " and ' ' P. imitator " from next line. 

 Page 273, li7ie i^, for " laminata " 7-ead " lamellata." 



Page 316, line 13, for " Terebratula cranium" read " Terebratula vitrea." 

 Page 351, line 24 (from bottom), for " C. lucida" read " C. lurida." 



