88 PERMIAN POSSILS. 



Gkyphites aculeatus, Schlotheim. Taschenbuch, vol. vii, pp. 56, 58, pi. iv, figs. 1, 2 



(fig. 3 exclusa), 1813. 

 Curious shell,^ Thomson. Annals of Philosophy, vol. iv, p. 18, 1814. 

 A SPECIES OF Caedium, J. B. Taylor. Surtees, Hist. Durham, vol. i, p. 236, 1816. 

 (?) Casts of Anomi^, Winch. Trans. Geol. Soc. Lond., vol. iv, p. 10, 1817. 

 Gryphites aculeatus,2 Schl. Petrefactenkunde, p. 293, 1820. 

 Productus horridus, /. Sow. Min. Conch., vol. iv, p. 17, pi. cccxix, fig. i, 1823. 



— Hoppii, Kcenig. Icones Sect. Foss., pi. ix, fig. 108, 1825. 

 Gryphites aculeatus, 8chl. Boue, Edin. Phil. Journ., vol. xii, p. 144, 1825. 

 Producta calva, /. de C. Sow. Min. Conch., vol. vi, p. 115, pi. dlx, figs. 2-6, 1827. 

 Productus aculeatus, Schl. Bronn, Zeitschrift, vol. ii, p. 543, 1827. 



— HOERIDUS, /. Sow. Fleming, Brit. Animals, p. 379, 1828. 



— aculeatus (Gryphites), Schl. Alex. Brongniart, Tab. de Ter., p. 423, 1829. 

 Producta antiquata, J. Sow. J. de C. Sow., Trans. Geol. Soc. Lond., 2d series, vol. iii, 



p. 119, 1829. 



— calva, J. de C. Sow. Loc. cit. 



HORRIDA, /. Sow. Loc. cit. 



— ACULEATA, ScM. De la Beche, Geol. Man., p. 384, 1831; German transl., 



p. 459, 1832 ; and 3d Eng. ed., p. 573, 1833. 



— .ANTiauATA, J. de C. Sow. Loc. cit. 



— CALVA „ Loc. cit. 



Productus aculeatus, Schl. Kurtze, Petr. Mansf., p. 33, 1833. 



Producta aculeata, „ PhiUips, Encyc. Met., vol. iv, pi. iii, fig. 1, p. 617, 1834. 



— ANTIQUATA, J. de C. Sow. Loc. cit. 



— calva „ Loc. cit. 



Strophomena aculeata, Schl. Bronn, Lethsea Geognostica, vol. i, p. 86, pi. iii, fig. 



la, b, c, 1835. 

 Producta — „ Quenstedt, Wiegmann's Archiv, vol. ii, p. 76, pi. i, fig. 



2 a, h, c, 1835. ^ 



Productus tubuliferus, Beshayes. Lamarck, Anim. sans Verteb., t. vii, p. 379, 



2d ed., 1836. 



— CALVUS, J. de C. Sow. Deshayes, op. cit., t. vii, p. 381, 1836. 

 Producta horrid a, /. Sow. Phillips, Lardner's Cyclopaedia, Geology, vol. i, p. 190, 



fig. 5, 1837. 



— calva, J. de C. Sow. Lyell, Elements of Geology, p. 416, fig. 240, 1838. 

 Productus aculeatus, Schl. VonBuch, Akad. Berl., Theil i, p. 35 (excl. p. 27), pi. ii, 



figs. 13-15, 1840. 



— — „ Leonhard, Geologic, vol. iii, p. 26, pi. Ixi, fig. 3, 1840. 



— — ,, Geinitz, Jahrbuch, p. 640, 1841. 



— CALVus, J. de C. Sow. Morris, Catalogue, p. 126, 1843. 



— ACULEATUS, Schl. Geinitz, Gseavon Sachsen, p. 97, 1843. 



^ "This most curious shell has some resemblance to a shell observed by Martin in the Magnesian Lime- 

 stone of Bredon in Derbyshire, and probably constituting a species of the same genus." (Thomson, 

 loc. cit.) 



- Schlotheim's specific name aculeatus is now abandoned for the shell under consideration, as Martin, 

 in his ' Petrefacta Derbiensa,' 1809, had previously applied the same name to another Productus found in 

 the Mountain limestone. 



