CTKTOCERATID^. 
305 
DETOXIAN SPECIES. 
Cyrtoceras (Meloceras), sp. 
A much weathered fragment consisting of eight or nine of the 
septa and part of the body-chamber of a rather rapidly tapering, 
slightly curved species, too imperfect for specific identity. 
Horizon. Upper Devonian 
Locality. Lower Dunscombe, near Chudleigh, Devonshire. 
Presented by J. E. Lee, Esq., F.S.A., E.G.S. 
Cyrtoceras (Meloceras) Belgicum, Eoord. 
? 1853. Phragmoceras Braferi, Geinitz, Die Verstein. der Graiiwackenf. 
in Sachsen, p. 33, Taf. v. ff. 2 «, 2 h. (Not of ^Miinster.) 
Sj). Char. Shell very slightly curved. The transverse section 
elliptical, the ratio of the two diameters being as 23 : 36. The rate 
of increase is slow, but cannot be accurately determined. The 
body-chamber (crushed on one side) is very short, its length being 
about |- that of the greatest basal diameter. The outline of the 
aperture is simple, and no sinus is observable in it. The septa are 
3 lines distant from each other where the (greater) diameter of the 
shell is 2 inches 2 lines ; their convexity is about ^ of that diameter. 
The siphuncle is 2| lines from the convex border of the shell in the 
median line ; its internal structure is not seen. No traces of the 
test remain, the specimen being in a bad state of preservation. 
There is a row of well-marked crenulations at the base of the body- 
chamber. The total length of the fossil is 3| inches, the greatest 
diameter 2| inches. 
Remarks. The figures given by Geinitz (loc. cit.) come very near 
to this fossil, though his shell appears to taper more rapidly ; it has, 
however, the same very short body-chamber, with crenulations at 
the base, and the septa are similarly distant from each other. 
Horizon. Schistes de Couvin (Eifelien) ; Middle Devonian. 
Locality. Nismes, Belgium. 
Represented in the Collection by a single example, transferred 
from the Museum of Practical Geology. 
Cyrtoceras (Meloceras) subplicatum, Boemer, sp. 
1854. Cyrtoceras suhplicatum, F. A. Roemer, Palseontographica, Band 
iii. p. 38, tab. vi. ff. 3 a, b. 
1866. Cyrtoceras suhplicatum^ F. A. Roemer, Beitr. z. geologisch. 
Kenntn. des nordwestlichen Harzgebirges, p. 32. 
^ Registered 0. 1831 in the Museum Collection. 
* See footnote, ante, p. 91. 
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