166 
CONOHIFERA. 
Catillus. 
with incurved umbones; hinge linear, consisting of a series of 
transverse grooves, and extending on one side of the beaks 
only, its direction, as regards the transverse diameter of the 
shell, being generally oblique ; cartilage partly external. 
1. Catillus Cuvieri.— Cuviers Catillus, pi. LXVIL 
fig. 21. 
Inoceramus Cuvieri. Sowerby, Y. p. 59, pi. 441, fig. 1. 
Convex ovate, curved, generally one-third longer than 
wide, and rather shallow ; anterior side concave, with a small, 
almost smooth lobe near the beak ; beaks short, and rather 
acute, hardly raised abovo the hinge-line, which is long; sur¬ 
face with transverse, distant, waved, shallow furrows; the 
laminated lines of growth are nearly equidistant, with the sur¬ 
face between them smooth. 
Ihis is a gigantic species, sometimes being found from four 
to five feet in length. 
I he Lower Chalk, Lyme Regis, Lewes, Royston, and 
Peters field. 
2. Catillus Brongxiartii.— Brongniart’s Catillus, pi. 
LX VIII. figs. 4, 5, 6. 
I nocerarnusBrongniartii. Sowerby, Y. p. GO, pi. 441,f. 2,3. 
Oblong, gibbose, its length not quite double its breadth; 
posterior side cordiform, angular, and lobed ; anterior side 
truncated, flat, and smooth ; beaks small, curved, and acute ; 
surface with largo transverse undulations. 
This species grows to a large size. 
The Chalk, Lowes and Dover. 
3. Catillus cordiformis. —The Heart-shaped Catillus, pi. 
LXYIII. fig. 15. 
Inoceramus cordiformis. Sowerby, Y. p. Gl, pi. 440. 
Lquivalved, heart-shaped, width and depth nearly equal, 
and its length a little more than the breadth; anterior side 
angular; posterior side not defined, hut emanates gradually 
from a hollow beneath the beaks, which aro large and in¬ 
curved ; surface transvcrsoly and interruptedly waved. 
In the Chalk, Gravesend, Lewes, and Norfolk. 
4. Catillus mytiloides. —The Mytilus-shapod Catillus, 
pi. JjXVII. fig. 5. 
Inoceramus mytiloides. Sowerby, Y. p. G2, pi. 442. 
Equivalved, depressed, and elongated ; convex and obtuse 
towards the beaks, which aro short and sharp-pointed; pos¬ 
terior side produced; hinge-line oblique ; surface with slight 
irregular undulations. 
In the Chalk, Norwich, Gravesend; the Lower Chalk, 
Lowes, Warminster, Petersfield, and Lyme Regis. 
5. Catillus latus.— The Broad Catillus, pi. LXVIII. 
fig. 8. 
Inoceramus latus. Sowerby, YI. p. 159, pi. 572, fig. 1. 
Depressed, ovate-rhomboidal; valves equal; anterior side 
concave; posterior side broad and expanding towards the 
hinge-line, which is very oblique; beaks small and short; 
surface with slightly elevated concentric undulations and 
shaq> stria?. 
The Chalk, Brighton and Norfolk, and the Lower Green¬ 
sand, Brasted, Kent. 
G. Catillus stiiiatus. —The Striated Catillus, pi. LX YIII. 
fig. 3. 
Inoceramus striatus. Sowerby, YI. p. 160, pi. 582, fig. 2. 
Sub-globose, plain, anterior side concave and smooth; 
beaks very short and obtuse ; surface with shallow concentric 
furrows, and striated. 
Lower Chalk, Haytesbury and Lewes. 
7. Catillus ixvolutus. — The Involute Catillus, pi. 
LX YIII. figs. 12, 13. 
Inoceramus involutus. Sowerby, YI. p. 1G0, pi. 583. 
Somewhat globular, valves very unequal, one of them consi¬ 
derably inflated and oven, with a large incurved beak, and its 
side very concave, the other valve nearly flat, with deep, con¬ 
centric undulations; its margin very thick and deflected; 
hinge-line placed upon an elevated narrow lobe. 
The Chalk, Lewes and Norfolk. 
8. Catillus gryplleoides. —The Gryphae-formed Catil¬ 
lus, pi. LXYIII. fig. 1G. 
Inoceramusgryphceoides. Sowerby, YI. p. 161, pi. 584, fig. 1. 
Yentricose, ovate; inequivalve, the smaller globose; beaks 
incurved, acute, and approximating; surface concentrically 
undulated. 
The Lower Greensand, West of Lyme Regis, and at Ring- 
mer, &c. 
9. Catillus dubius.— The Doubtful Catillus, pi. LXYIII. 
fig. 2. 
Inoceramus dubius. Sowerby, YI. p. 162, pi. 584, fig. 3. 
Concave, ovate, pointed ; valves unequal; beaks short and 
pointed; surfaco concentrically striated and indistinctly undu¬ 
lated. 
Lias, Whitby, Yorkshire, and Yale of Gloucester. 
10. Catillus pictus. —The Painted Catillus, pi. LXYIII. 
%. 7. 
Inoceramus pictus. Sowerby, YI. p. 215, pi. 594, fig. 1. 
Convex, oblong, valves equal ; anterior sido somewhat 
flattened and smooth ; surface a little wavy, almost covered 
with small concentric furrows, and generally with longitudinal 
stripes of brown colour. 
In the Chalk Marl, Guildford. 
11. Catillus digitatus.— The Fingered Catillus, pi. 
LXYIII. fig. 14. 
Inoceramus digitatus. Sowerby, YI. p. 215, pi. 594, fig. 2. 
Shell very large, covered with large longitudinal furrows, 
with the intervening ribs round and equal to the furrows, 
crossed by distinct lines of growth. 
Tho Chalk, Debden, Essex. 
12. Catillus concentricus, —Tho Concentric Catillus, pi. 
LXYIII. fig. 11. 
Inoceramus concentricus. Sowerby, III. p. 183, pi. 305. 
Ovate, inequivalve, length nearly double its width, one valve 
deeper than the other, with tho beaks much produced and in¬ 
curved ; beak of the shallower valve very short; both are 
transversely undulated and striated, the striie being the 
odges of distant, imbricated plates or lamime ; hingo-liue con¬ 
taining about twelve grooves for the roooption of the ligament. 
Tho shell consists of two coats, the outer ono of a fibrous 
structure, and brown coloured ; tho inner pcarlaceous. 
Tho Chalk Marl, Lyme Rogis and Warminster; the Gault, 
Folkestone and West Mailing; the Red Chalk, Hunstanton ; 
and the Lower Greensand, Pinhay, Devonshire, and Isle of 
Wight. 
13. Catillus sulcatus. —Tho Furrowed Catillus, pi. 
LXYIII. fig. 1. 
