BELEMNITES REDIVIVUS. 59 



from that horizon, but does not mark it as occurring in the bed below. Wright, 

 however, (28) records it as from the Cornbrasli in Mr. Leckenby's cabinet. 

 Nevertheless, after this date, Phillips, in his ' Belemnites ' (Pal. Soc), states 

 that " as far as he remembers " no Belemnite has been quoted from the Cornbrasli 

 except by error. It would seem, therefore, that the ? is justified by the 

 literature. We may take it, however, that Leckenby's specimen has since been 

 confirmed by the discovery of a second specimen of Bel. redivivus (q.v.) by Mr. 

 H. Keeping. 



The second record is from Helpstone, near Peterborough, by Mr. Sharp. 

 There is a fragment of Belemnite in the Sharp collection at Birmingham, but 

 it has no label. It appears to be in a Cornbrasli matrix like that of other 

 Cornbrasli fossils ; it is rather stout and shows no furrows, and could, not be 

 named even if localised. 



Belemnites redivivus, sp. nov. Plate VII, fig. 1, 2. 



Type (PI. VII, fig. 1). — This is a portion of the guard including the alveolus. 

 The length of the axis (i. e. between the extremities of alveolus and guard) is 

 60 mm. The antero-posterior diameter at the alveolar apex is 19 mm., and the 

 transverse diameter 18 mm. This compression is caused by a slight flattening on 

 the two sides of the post-apical surface. On the ventral side is a narrow 

 groove commencing at the apex, expanding opposite the middle of the axis, 

 and dying away at the upper two-thirds; it has rounded boundaries. There 

 are no other marks on the surface. The alveolus has an angle of about 22°, 

 and its apex is situated at about 8^-10^ of the antero-posterior diameter, and 

 the thickness of the guard on either side maintains the same proportion through- 

 out. It is from clays referred to the Cornbrasli in Cayton Bay, associated with 

 Macrocephalites herveyi, and is in the Sedgwick Museum (Leckenby coll.). 



Description. — Another example from the same localitjr, obtained by Mr. Henry 

 Keeping, differs only slightly from the type in being a little narrower in pro- 

 portion — its outline tending to a more conical shape. The dimensions are : 

 Length of axis 68 mm.; diameter 17 X 16; angle of aperture 24°; apex at a 

 point 7 — 10 along diameter. The species belongs to the group that has been 

 variously named after Bel. pusozianus, Bel. owenii, and Jlcl. magnificus, which 

 characterise the zone above. It has the same kind of groove and compressed 

 shape, but the relative length of the axis is very much less, being only 3-g- (f§), 

 or 4 (ff), instead of <> or more as in B. pusozianus. It is the first and less 

 characteristic form which presents itself on the revival of Belemnite life in this 

 country. This is the form which has been called tornatUis, but though the latter 



