XXXI 
COREIGEXDA ET ADDEXDA. 
Page 7, line 6 from top, for Orthoceras politum, M‘Coy, read Ortho- 
ceras lancea, Barrande. 
„ 13, line 14 from top, for Orthoceras gracile, Portlock, read Ortho- 
ceras Lapworthi, Foord, the former specific name being pre- 
occupied by Blumenbacb (see p. 81). 
,, 62, last line, for horizontally read longitudinally. 
„ 78, bne 19 from top, for the type-specimen read two specimens, and 
line 11 from bottom, /or this name read the name 0. vertehrale. 
„ 80, line 8 from top, for Orthoceras longicameratum read Ortho- 
ceras Nctssoviense, the former specific name being preoccupied 
by HaU (Pal. Xew York, 1859, vol. iii.). 
,, 82, in the fourth column, /or Cydridinen read Cypridinen. 
,, 93, bne 2 from top, /or Switzerland read Hartz. 
„ 96, line 4 from top, for Orthoceras Bavaricum, Foord, read Ortho- 
ceras Muensterianum, d’Orbigny (see Prodr. de Paleont. 
Tol. i. p. 55). 
„ 111, line 15 from bottom, for p. 52 read p. 62. 
„ 115, delete fines 1 and 2 from top, and at line 2 from bottom for Tourna 
read Vise. 
,, 117, fine 6 from top, delete /ro;w A specimen to end of paragraph. 
„ 174, fine 5 from top, for Actinoceras capitolinum read Jovellania 
Capitolina. 
„ 214, fine 7 from bottom, delete the word Kemarks. 
