explanation of plate 44. 
65 
f'lg- 8. Hamites Bucklandi, (Phillips,) from the Gault 
or Speetou Clay, in the collection of Mr. I. Phillips 
^ of York, (Original.) 
ig- So. Transverse septum of Fig. 8, shewing the lobes 
and saddles, and the siphuncle at a. 
ig. 9. Hamites armatus, from the upper Green Sand, 
near Benson. (Sowerby.) 
fig. 10. Transverse section of the same, shewing the 
siphuncle, on the back, between the spines. 
Pig. 11. Hamites from Folkstone Clay, shewing the spiral 
Ribs of the outer shell. At a. we see the Siphuncle, 
and the lobes and saddles of the transverse Plate. 
Pig. 12. Fragment of the cast of tlie interior of another 
Hamite from Folkstone Clay, slewing the Siphuncle 
at a. The removal of the outer shell shews the 
sinuous edges of the transverse Plates beneath the 
Ribs. (Original.) 
Pig. 13. Fragment of Hamites articulatus (Sow.) from the 
Green Sand at Earl Stoke, shewing the Siphuncle 
(a.) covered by a small portion of the shell. The 
sinuous terminations of the transverse plates are 
visible beneath the ribs, having their secondary 
lobes rounded outwards (6.) and pointed inwards 
(c.) like the secondary lobes of Ammonites, (Ori- 
ginal.) 
I^ig. 14. Fragment of Turrilites Bergeri, in the collection 
of G. B. Greenough, Esq. from the Green Sand for- 
mation. The siphuncle is seen near the upper or 
dorsal margin of two whorls at a. a . ; the sinuous 
odges of the transverse plates are visible on the 
middle whorl ; and the entire surface of a transverse 
plate is laid open at the smaller end of a third 
whorl, shewing its lobes and saddles to be analo- 
gous to the same parts in Ammonites. (Original.) 
11. II. 
