CYPKICARDINIA. 
9 
2. Ctpricaedinia steiatissima, n. sp. PI. I, figs. 9, 9 a, 10. 
? 1834-40. Sanguinolabia lamellosa, Goldfuss. Petref. Germ., vol. ii, p. 279, 
pi. clix, fig. 12. 
? 1881. Ctpeicaedinia nitidula, Barrande (pars). Syst. Sil. Boheme, vol. v, p. 71, 
pi. cciv, figs. 6, 5—8 ; pi. cclvii, 
figs. 4, 22-24 only, Et. F. 
? 1889. — CEETTicosTATA, Barrois. Faun. Calc. d'Erbray, p. 167, 
pi. xi, figs. 9 a — g. 
Description. — Shell small, inequivalve, moderately convex, oblique, sub- 
quadrate, not elongate. Umbo ratber elevated, recurved, facing forwards, sharp 
at the point, subproximate, situated in front of the centre, but not at the anterior 
end. Hinge-line apparently rather long, slightly convex behind the umbo, and 
depressed in front of it. Lunule small, deep. Escutcheon very long, defined by 
a rounded angle running from the back of the umbo to the infero-posterior corner, 
within which the surface is at first slightly concave and then rises to form a short, 
flat, obtuse-angled hind wing. Anterior margin rather narrow, very convex. 
Inferior margin gently convex, except that near the anterior side there is an 
indistinct constriction. Postero-inferior corner slightly produced, rounded. 
Posterior margin straight, short, oblique. - Back of the shell transversely flat, 
except for a more or less definite, very shallow constriction, which runs down 
from the front part of the umbo to the anterior part of the inferior margin, 
rounded rapidly in front and over the post-umbonal angle. Surface covered by 
forty or fifty fine, transverse, narrow, elevated, rounded ridges, separated by 
rather wider furrows, which are barred with very numerous, fine, radiating 
strige, that seem to vanish on the summit of the ridges. A triangular ligamental 
gap apparently existing under the umbo. 
8ize of right valve. — Length 16 mm., breadth 13 mm., depth 5 mm. 
Localities. — From Wolborough there is a specimen in Mr. Vicary's Collection, 
and another in the Museum of Practical Gleology. From Barton there is a 
specimen in the Lee Collection. From Lummaton a poor specimen is in my 
Collection, another doubtful specimen in the Woodwardian Museum, and another 
(probably from the same place) in the Torquay Museum. 
Remarks. — It is with some doubt that I have placed these six specimens 
together, for some of them are too indistinct to enable us to do more than guess 
their character, and the Woodwardian specimen shows no crenulations. 
Mr. Vicary's and Mr. Lee's specimens are the only two that fully show specific 
characters, and they have marked difi'erences. The former, a left valve, has a 
stronger and very anterior constriction ; while the umbo of the latter, a right 
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