J. W. Jackson — MoUusca, Coal-measures, Lancashire. 453 



Anthracotnya phillipsii (Williamson). — Some extraordinary mis- 

 understanding appears to have taken place here with regard to the 

 type-specimen of this abundant Upper Coal-measure form. The 

 example described and figured as the type by Dr. Hind [14, p. 263, 

 pi. X, fig. 27; 15, p. 121, pi. xvi, fig. 10] (Manchester Museum, 

 L. 10106) is labelled on its underside as coming from Ardwick and 

 the matrix is a red shale, whereas Williamson in his original 

 diagnosis [16, p. 351] gives the Spirorhis limestone shale of 

 Pendlebury as the horizon and locality whence Dr. C. Phillips 

 obtained the specimens on which the species appears to have been 

 founded. The Ardwick specimen, therefore, can only be regarded 

 as the original of Hind's figures and not as the type-specimen. 

 I have been unable, so far, to trace the original specimen, or, in 

 fact, any examples from the Pendlebury district in the Manchester 

 Museum. 



Gasteeopoda. — Rapliistoma (?) ornata, Bolton [13, p. 6, pi. v, 

 fig. 10]. The specimen (Manchester Museum, L. 3494) on which 

 this species was founded represents quite a young shell about 

 1^ to 2 whorls beyond the nepionic stage, and can scarcely be 

 referred to the genus RafTiistoma, Hall, as defined by De Koninck 

 [17, p. 133]. In my opinion, judging from the fragmentary 

 material at my disposal, it seems to possess greater affinity with the 

 genus Turlonellina, De Koninck [17, p. 76], and in all probability is 

 referable to a young stage of one or other of the species placed in 

 this genus by De Koninck. One species, TurhonelUna formosa, 

 De Kon., has already been recorded by Dr. Hind [6, p. 532] from 

 the marine band below the Gin Mine Coal at JS'ettlebank (North 

 Staffordshire Coal-field). The horizon and locality of the Manchester 

 Museum specimen is Lower Coal-measures (Bullion Coal), Bacup, 

 Lanes. 



BiBLIOGEAPHY. 



1. Proc. Yorks. Geol. Soc, vol. xvii, pt. ii, p. 97 et seq., pis. iii, v, and vi, 



1910. 



2. Trans. Manch. Geol. Soc, vol. sxi, pt. xiii, p. 400, pis. i-iii, 1892. 



3. Ibid., vol. xxviii, 1904. 



4. Quart. Journ. Geol. Soc, vol. Ivii, p. 353, and Appendix B, facing 



p. 402, 1901. 



5. Proc. Malac Soc, vol. vi, pp. 15-20, pi. ii, 1904. 



6. Quart. Journ. Geol. Soc, vol. Ixi, 1905. 



7. Geol. Surv. Mem., Geology of the Country around Bolton-le- Moors, 



p. 35. 



8. Catal. Foss. Ceph. Brit. Mus., pt. iii, p. 203, fig. 98, 1897. 



9. Report to the Council, September, 1910. 



10. Mon. Brit. Garb. Lamell. (Palseontographical Society), vol. i, 1896-1900. 



11. Trans. Manch. GeoL Soc, vol. iv, 1863. 



12. Ibid., vol. xviii, 1886. 



13. Mem. and Proc Manch. Lit. and Phil. Soc, vol. xU, No. vi, 1897. 



14. Quart. Journ. Geol. Soc, vol. xlix, 1893. 



15. Monog. Carbonicola, etc. (Pal. Soc), 1895. 



16. Philos. Mag., vol. ix, 1836. 



17. Faune du Calc Carb. Belg., pt. iii, 1881 (Ann. Mus. Roy. d'Hist. Nat. 



Belg., vol. vi). 



