HIND : CARBONIFEROUS AMMOXOIDS NEW TO ENGLISH ROCKS. 361 
elliptical in section. Umbilicus open, measuring about one-seventh 
the diameter of the shell. Whorl indented to about a half its depth 
by preceding. Periphery regularly convex. The sides very gently 
convex. Body chamber occupies a complete whorl. Chambers 
about 18 to the whorl. Suture hne as in Foord (PI. XLIII, 3b) ; 
external saddles high, and broadly rounded. Test thin and smooth. 
Dimensions. — Transverse diameter 115 mm. ; thickness of shell, 
•65 mm. 
Localities. — Cyathaxonia beds at Bradbourne (Derbyshire) ; 
Elbolton (Yorkshire). 
Observations. — This species attains a larger size than any other 
British species of Glyphioceras. The suture shows an affinity to 
G. sphaericum Phill., but the shape of the shell is much more com- 
pressed and less globose in comparison with its diameter. The suture 
line at once separates this species from G. crenistria Phill. and G, 
striatum Sow. G. ohesum Foord., has been obtained from Little Island 
(Co. Cork), from beds which I take from the fauna to be very high up 
in the Carboniferous Limestone series. Prolecanites compressus has 
been obtained there, which indicates the base of the Pendleside 
Limestone. 
GLYPHIOCERAS CORPULENTUM Crick. 
Glyphioceras corpulentum Cnck., 1899; Aiin. Mag. Nat. Hist., Sec. 
7, Vol. III., p. 447, Fig. 12. G. corjmlentum Foord, 1903 ; Carb. 
Ceph. Ireland, p. 176, PI. XLYII, figs. 1 a.b. ; PI. XL VIII, Figs. 
1 a.c. 
Locality. — Kniveton (Derbyshire), Zone C. 
Observations. — It is unnecessary to repeat the full and detailed 
descriptions given both by Crick and Foord. It is important to note 
in the Kniveton Limestone the occurrence of this species, the types of 
which came from St. Doulaghs. I consider both these quarries to be 
on the same horizon. Ccelonautilus pinguis is present at both 
localities. 
2a 
