EXPLANATION OF PLATE 44'. 
69 
careous partitions is least near the margin of the 
lamellae. See Fig. 6'. (Original.) 
Fig. 6'". Columnar appearance of the sinuous partitions 
when viewed laterally. (Original.) 
Fig. 7. Unique specimen of Belemnites ovalis, from the 
Lias at Lyme Regis, in the collection of Miss 
Philpotts. A fracture at b'. shews the chambered 
areolae of the Alveolus. At e. the thin conical 
anterior homy sheath originates in the edge of the 
calcareous sheath, and extends to e". The surface 
of this anterior sheath exhibits wavy transverse 
lines of growth ; it is much decomposed, slightly 
nacreous, and flattened by pressure. 
Within this anterior conical sheath the Ink-bag 
is seen at c. somewhat decomposed, and partially 
altered to a dark grey colour. (Original.) 
Fig. 8. Portion of the Ink-bag broken off from Fig. 7. c. 
and covered by that portion of the horny case which 
lay above it. The transverse lines, e. on this por- 
tion, are the continuation of the lines of growth on 
the horny sheath of Fig. 7. e. e'. e". (Original.) 
Fig. 9. Belemnites Pistilliformis? from the Lias at Lyme, 
m the collection of Miss Philpotts, having a portion 
of its ink-bag at c. (Original.) 
Figs. 10. 11. 12. Belemnites from the Jura limestone of 
Solenhofen, figured by Count Munster in Boue’s 
Memoires Gdologiques, Vol. I. PI. 4. In 10 and 
12 the form of the anterior horny sheath is pre- 
sei ved, to a length equal to that of the calcareous 
shaft of the Belemnite, but in none of them is the 
Ink-bag visible.* (Munster.) 
* Von Meyer mentions (Palaeologica, P.322, 1st Edit. 1832,) that 
® as seen an Ink-bag at the upper end of a Belemnite from the 
las of Banz, and asks, “ Do Belemnites possess an Ink-hao- HFp 
“ lat of the Sepia?” og.uKe 
