256 



CONCHIFERA. 



Crania. 



N. minima. Browu, Tr. Man. Geo. Soc. I. p. 64, pi. 6, figs. 

 22, 23, 24. 



Ovate ; body large ; spire small, consisting of two depressed 

 volutions ; aperture semi-lunar ; surface smooth. 



In the Red Marl, Newtown, near Manchester. 



In the Coal Shale, High-Green Wood, near Todmorden. 

 In the Manchester Museum. 



1. Globulus Smithii. — Smith's Globulus, pi. XXXIII.* 

 fig. 77. 



G. Smithii. Brown, Wem. Mem. VIII. |pl. ], fig. 18. 



Ventricose, sub-globose, smooth, glossy ; spire with three 

 obtuse depressed volutions, sepai-ated by a deep groove ; aper- 

 ture obloug-ovate, narrowed and pointed above ; pillar-lip 

 broadly reflected on the columella. 



Found by the Duchess of Argyle, in the Pleistocene Marine 

 Formation at Ardencaple. 



1. Bulla undulata.— The Waved Bulla, pi. XXXIII.* fig. 

 78. 



B. undulata. Bean, Mag. Nat. Hist. 1839, pi. 7, fig. 9. 



Oviform, ventricose ; aperture expanded ; sm-face smooth, 

 with a few longitudinal, waved, shallow, irregular farrows. 



The Cornbrash, Scarborough. 



1. PiLEorsis MiNUTA. — The Minute Pileopsis, pi. XXI.* 

 tigs. 55, 56, 57. 



P. minuta. Browu, Tr. Man. Geo. Soc. I. p. 223, pi. 7, 

 figs. 55, 56, 57. 



Shell smooth, glossy, conical, with the vertex slightly spiral 

 ;md inflected ; apertm'e sub-obvate, and expansive. Diameter 

 about a line. 



1. Patella Geeenwoodi. — Greenwood's Patella, pi. XXI.* 

 figs. 58, 59. 



P. Grreenwoodi. Brown, Tr. Man. Geo. Soc. p. 224, pi. 7, 

 figs. 58, 59. 



Shell sub-ovate, conical, smooth, slightly wrinkled trans- 

 versely, sub-depressed ; the vertex inclined anteriorly. 



In the Limestone Shale, near Hebden Bridge. 



1. EuoMPHALUs CoRNDENSis. — The Comdon Euomphalus, 

 pi. XXXIII.* fig. 58. 



E. Corndensis. Sowerby, Sil. Syst. p. 641, pi. 22, fig. 16. 



Discoidal, smooth, with three volutions; the keel with a 

 series of nodules ; aperture transversely oval. Diameter two 

 and a half lines. 



In Volcanic Grit, Lower Silurian Rocks, Leigh Hall, Com- 

 don Hills, Wales. 



2. Euomphalus tenuisteiatus. — The Thin Striated Euom- 

 phalus, pi. XXXIII.* fig. 53. 



E. tenuistriatus. Sowerby, Sil. Syst. p. 641, pi. 22, fig. 14. 



Discoidal, with three rapidly increasing volutions, crossed 

 by veiy fine, thickly set, regular strife ; aperture round, equal 

 in diameter to half the width of the shell. Diameter four and 

 a half lines. 



Lower Silurian Rocks, Middleton, Comdon Hills. 



1. Ceeithitium GiGANTEUM. — The Gigantic Cerithium, pi. 

 XXXVII. figs. 18 and 15, p, 66. 



CLASS COKCHIEERA. 



1. Ceania antiquiok. — The Ancient Crania, pi. LVI.* 

 fig. 39. 



C. antiquior. Jelly. MSS. 



Orbicular, compressed, with the umbo large, extended, 

 rounded at the termination, and quite straight. 

 In the Great Oolite, Hampton Chffs. 



2. Ceania steiata.— The Striated Crania, pi. LVI.* fig. 60. 

 C. striata. Woodward, Geo. Nor. pi. 0, fig. 15. 



Nearly orbicular, the upper valve conical ; with about fifteen 

 strong divergent fun-ows, and smaller inter^-ening ones; the 



intermediate ribs rounded, and producing a scolloped margin 

 all round : the interior strongly marked. 



The Upper Chalk, Gravesend. 



3. Cranla ovalis. — The Oval Crania, pi. LVI.* fig. 59. 



C. ovalis. Woodward, Geo. Nor. pi. 6, fig. 16. 



Oval ; base somewhat wider than the apical end ; centre of 

 superior valve conical ; the vertex a little curved ; surface with 

 numerous strong divergent furrows and intermediate ribs ; 

 margin nearly plain. 



The Upper Chalk, Harford Bridge, Norfolk. 



