1921 CORRIGENDA 



Corrigenda 



dd 



Page 6, line II, before ' flavum ' read ' Oxynoliceras ' 



P. 7, 1. 30, for ' elliptocone ' read ' ellipticone ' 



P. 10, for ' Loch Staffin Beds ' read ' Loch Stafrin (Argovian) Beds ' 



P. 18, 1. 15 down and lines 1, 2 up, for ' pavlovi ' read ' pavlowi ' 



P. 19, SagiUiceras. The prior, unfortunately overlooked Sagitloceras, 

 does not invalidate SagiUiceras. Nomenclatorial rules state that 

 the distinction of a letter is sufficient ; therefore, change is not 

 allowed. 



P. 22, 1. 8 up, for ' well-marked cutting ' read ' well-marked, cutting ' 



P. 26, 1. 18 up, for ' holotype ' read ' lectotype ' 



P. 30, 1. 10 down, for ' Haselbubgites ' read ' Haselburgites '• 



P. 31, 1. 4 down, for ' Congres ' read ' Congres ' 



P. 31, 1. 12 up, for ' ou ' read ' ou ' 



P. 32, 1. 15 down, for ' kranker ' read ' kranke ' 



P- 34> 1- 33. f° r ' -4w. kbnighi ' read ' Perisph. kbnighi ' 



P. 50, 1. 5, delete ' ; ' at end 



P. 50, 1. 22 up and p. 51, 1. 10 up, for ' isidophorus ' read ' isidophorous ' 



P. 50, 1. 17 up, for ' anisidophorus ' read ' anisidophorous ' 



P. 50, 1. 3 up, for ' Tables IV, V ' read ' Tables III— V ' 



PI. CXXXVIII a. Alter ' Hildoceras serpentinum, Reinecke sp.' to 

 ' Hildoceratoid.es serpentinus, Reinecke sp.' The sharp swing back- 

 wards of the ribs in Hildoceratoides propeserpentinus (PI. CCXVIII) 

 shows the rib-character which Reinecke depicted : it was wrongly 

 thought to be an exaggeration. Therefore Argonauta serpentinus, 

 Reinecke, may be expected to have the rather long, narrow Li of 

 Hildoceratoides and so to belong to that genus. 



Hildoceratoides has been recognized by Ur. L. F. Spath, F.G.S., 

 as denoting a date somewhat later than that of Harpoceras falciferum. 



PI. CXXXVIII b. Alter ' Hildoceras serpentinum Reinecke sp.' to 

 ' Hildaites serpentiniformis, nov., Holotype.' The broad and 

 somewhat short Li agrees with that of Hildaites subserpentinus , 

 S. Buckman, PI. CCXVII. Alter the number of ' PI. CXXXVIII b ' 

 to ' PI. CCLXVII a ' : it is hoped to give a further study of this 

 species. 



The title of PI. XII (Vol. I) should be altered from ' Hildoceras levisoni, 

 Simpson sp.' to ' Hildaites levisoni, Simpson sp.' The ribs of 

 Hildaites are not simple as in Hildoceras and Hildoceratoides, but 

 are connate towards inner part of lateral area. Absence of a 

 longitudinal lateral furrow distinguishes Hildaites and Hildocera- 

 toides from Hildoceras. 



Dr. Spath writes that Hildaites marks a date somewhat earlier 

 than that of Harpoceras falciferum. 



PI. CXXXIX c, for ' Fig. 2, x 2 ' read ' Fig. 2, Nat. Size ' 



PI. CL b, for ' 28 (24) ' read ' 23 (21) '—see PI. CCV 



PI. CLIV, for ' Lamberticeras ' read ' Bourkelamberticeras ' — see p. 17 



PI. CLV, for ' Prionoceras ' read ' Prionodoceras ' — see p. 17 



PI. CLXI, 1. 3, for ' 3 ' read ' 23 ' 



PI. CLXV a, for ' Fig. 1 x 2 ' read ' Fig. 1x2' 



PI. CCXIV, after ' S. B. Coll.' add ' 3314 ' 



Pis. CCXVII, CCXVIII, for 'cit. sp. (species) read 'cit. spec' (specimen) 



PI. CCL a, for ' " near ' read ' " near ' 



PI. CCLVIIa, 1. 4, for ' month ' read ' mouth ' 



