288 Cephalopoda in Tate and Blake's ‘ Yorkshire Lias.' 
Harpoceras ledum Simpson (p. 309). 
A completely-septate specimen in the Blake collection [B.M. No. 
C. 17985], without any label whatever, is obviously the fossil represented 
of about the natural size on PI. VIII., fig. 7. The outer whorl is denuded 
of the t6st, and, contrary to what one would expect from the figure, 
displays the suture-line admirably. The ‘ Geological position ' of the 
species as given by Blake (p. 309) is ‘ Zone of A. jurensis Peak,’ and 
this, in the absence of any label, must therefore be regarded as the horizon 
and locality of the figured specimen. 
Ammonites cequalis Simpson. 
See under Mgoceras angulatum Schlotheim sp. (ante, pp. 273-4). 
Teuthid® (p. 313). 
Beloteuthis subcostatus Munster (p. 313). 
One example of this species was recorded by Prof. Blake (p. 313), 
but not figured. His description is as follows : ‘ Pen 10 inches by 4, 
of a rhomboidal form, with two parabolic wings. The sides below 
these wings are slightly curved. The ends of the wings curve by a double 
flexure into the part beyond, and reach to about ^ the length of the pen. 
Midrib large, broadening towards the end ; the sides thrown into 
gentle folds, and covered with light striae, making an angle of 30° with 
the uppert part of the midrib.’ 
‘ Geological position. — Zone of A. serpentinus, Kettleness (1 ex.’) . 
The Blake collection contains an example of this species [B.M. No. 
C. 12046], agreeing very well with the above description. It is labelled 
in Blake’s handwriting : ‘ serpentinus, Whitby, Beloteuthis subcostatus/ 
It is displayed upon the surface of a slab, and the pen measures about 
9-5 inches by 4, the lower end being imperfect. There can be no doubt 
that this is the example referred to by Blake, the locality ‘ Kettleness * 
being only about 5 miles N.W. from Whitby. 
Beloteuthis leckenbyi J. F. Blake (p. 314). 
There is no example of this species in the British Museum collection. 
Blake’s holotype is according to Woods (Catalogue of the Type Fossils 
in the Woodwardian [now the Sedgwick] Museum, Cambridge, 1891, 
p. 125) in the Leckenby collection in the Woodwardian Museum, Cam- 
bridge. 
Geoteuthis coriaceus Quenstedt (p. 314). 
Blake described the species as follows : ‘ Pen obtuse at the end ; 
slightly expanding above ; keel almost absent ; oblique lines feeble ; 
often showing the ink-bag, which is about the size and shape of a nut, 
and has a narrow neck ; the pen is not very inflated ; the sides of 
the upper end project beyond the middle ; no signs of any lateral 
wings. The figure represents the lower end.' 
* Geological position. — Zone of A. serpentinus, Hawsker (4 exs.). 
The figured example is in the Blake collection [B.M. No. C. 12047]. 
It consists of only the posterior end of the pen, displayed on the surface 
of a small block bounded anteriorly by the surface of a natural fissure. 
The figure is reduced ; the greatest length of the specimen being about 
10 1 mm. It bears an original printed label as follows : ‘ From Hawsker 
Bottoms, near Whitby,’ and it is also labelled in Blake’s handwriting : 
‘PI. 8, fig. 1.’ There are no other examples in the Blake collection. 
Teudopsis cuspidatus Simpson (p. 314). 
The original of Blake’s figure (PI. IV., f. 3) is stated by Woods 
(Types and Figured Specimens in the Woodwardian [now the Sedgwick] 
Museum, Cambridge, 1891, p. 131) to be in the Leckenby collection in 
the Sedgwick Museum, Cambridge. Blake mentions three examples, 
and it is not quite clear whether all were in the Leckenby collection. 
There are no examples in the Blake collection. 
Naturalist 
