PROLECANITES COMPRESSUS. 203 



1850. Nautilus compressus, A. iVOrbicjny. Prod, de Pale-out. stratigr., vol. i, p. 110. 

 1852. Ammonites Henslowi, C. G. Giebel. Fauna der Vorwelt, vol. iii, p. 451. 



— Nautilus compressus, C. G. Giebel. Ibid., p. 178. 



1854. Goniatites compressus, J. Morris. Cat. Brit. Foss., 2nd ed., p. 303. 

 Nautilus (Discites) compressus, /. Morris. Ibid., p. 308. 



1855. Aganides Henslowi, F. M'Coy. Brit, Pal. Foss., p. 564. 



1881. Goniatites Henslowi, C. Barrois. "El marmol amigdaloide de los Piri- 



neos," Boletin de la Comision del 

 Mapa geologico de Espana, vol. viii, 

 1881, p. 9, pi. c, figs. 3 a—c. 



1882. Prolecanites Henslowi, E. von Mojsisovics. Abhandl. der Kais.-Kon. 



geol. Eeichsanst., vol. x, p. 199. 

 1884. K. A. von Zittel. Handb. d. Palseont., vol. ii, 



p. 421. 



— "Ammonites Henslowi, L. von Bueh," E. Beyrich. Zeitsehr. Deutsch. geol. 



Gesell., vol. xxxvi, p. 210. 



1888. Goniatites Henslowi, B. Etheridge. Brit. Foss., vol. i, Palaeozoic, p. 311. 



— Discites compressus, B. Etheridge. Ibid., vol. i, Palaeozoic, p. 310. 



1889. Prolecanites Henslowi, E. Holzapfel. Palseont. Abhandl., Dames und 



Kayser, vol. v, i, p. 42, pi. iii, 

 fig. 14 ; pi. iv, figs. 2, 4, 7. 



1891. Discites compressus (pars), A. H. Foord. Cat. Foss. Cepli. British 



Museum, pt. 2, p. 91. 



1892. Goniatites (Prolecanites) Henslowi, J. Seunes. Comptes Bendus, 



vol. cxv, p. 681. 



1894. Prolecanites compressus, A. H. Foord and G. C. Crick. Geol. Mag. (4), 



vol. i, p. 11, pi. i. 



1895. G. C. Crick. Trans. Manchester Geol. Soc, 



vol. xxiii, pt. 3, p. 83 ; woodcut, p. 86. 



Henslowi, K. A. von Zittel. Grundziige der Palseont., p. 400. 



1897. compressus, A. H. Foord and G. C. Crick. Cat. Foss. Ceph. 



Brit. Mus., pt. 2, p. 252, fig. 121. 



1901. Wlieelton Hind and J. A. Howe. Quart, Journ. 



Geol. Soc, vol. lvii, p. 349, etc. 



1902. Wlieelton Hind. Brit, Assoc. Adv. Sci., Glas- 



gow, 1901, p. 296 : " Life-zones in 

 the Carboniferous Rocks." 



Description. — " Shell discoidal, compressed, cvolute, widely umbilicated ; greatest 

 thickness at about the middle of the lateral area, about one-fourth of the diameter of 

 the shell. Whorls seven or eight ; inclusion almost nil ; umbilicus shallow, about 

 two-fifths of the diameter of the shell in width. Whorl subtrapezoidal in section, 

 higher than wide ; scarcely indented by the preceding whorl; periphery flattened, 

 feebly convex in the middle, but slightly concave near each margin, with prominent 

 subangular margins ; sides flattened, feebly convex, becoming more inflated on the 

 body-chamber; inner area fairly well defined, slightly convex, sloping towards the 



30 



