18 CATALOGUE OF TYPES AND FIGURED SPECIMENS 



Goniatites Smithii, Brown, 1841. 



1841. Goniatites Smithii, Brown, Trans. Manch. Geol. Soc, i., p. 218, 



pi. vii., figs. 34, 35. 



1849. „ „ Id., Foss. Conch , p. 248, pi. xxi.*, figs. 



34. 35- 



Type. — Shell globose, with strong transverse ribs ; 

 umbilicus wide. Breadth, 8 mm. 



Millwood, Todmorden, Yorks. 



Yoredale Shales. Coll. Gibson. 



Orthoceras sericeum, Salter, 1866. 



1866. Ovthocevas sericeum, Salter, Mem. Geol. Surv,, iii., p. 356. 



1873. „ ,, Id , Camb. and Sil. Foss., p. 18. 



1873. ,, sp. Hicks, Quart. Journ. Geol. Soc, xxix., p. 51. 



1882. ,, sericeum. Blake, Brit. Foss. Ceph , pt. i, p. 138, pi xiii., 



figs. I, 2. 



Type. — An almost complete specimen, the original of 



Blake's Fig. i. 



Garth, Brecknockshire. 



Upper Tremadoc Slates. Coll. Homfray. 



Orthoceras dimidiatum, Sowerby, 1839. 



1839. Ovthocevas dimidiatum, Sow., in Murch., Sil. Syst., p. 620. 



1852. „ „ McCoy, Brit. Pal Foss., p. 314. 



1873. ,, ,, Salter, Camb and Sil Foss., pp. 98, 173. 



18S2. „ „ Blake, Brit. Foss Ceph, pt i, pi vi., p. 103, 



figs II and 12 



Type. — A specimen showing downward imbrications, the 



original of Blake's Figure 12. 



Kington, Herefordshire. 



Lower Ludlow. Coll. LigJitbody. 



Orthoceras perversum, Blake, 1882. 



1839. Orthoceras imbricatum, (?) Sowerby, in Murch,, Sil. Syst., p. 620. 

 1852. „ „ McCoy, Brit. Pal. Foss., p. 315. 



1873- ,. ,, Salter, Camb. and Sil. Foss., p. 187. 



1882. „ perversum Blake, Brit Foss. Ceph , pt. i, p. 155, 



pi. xvi., figs. I, 2. 



Type.— A fine specimen, 22 cm. in length, the original 

 of Blake's Figure i. 



Ludlow, Shropshire. 

 Upper Ludlow. 



