154 R. Etheridge, Jun.— On Carhoniferous. Mollusca, 



A. papyraceus. Although a characteristic Coal Measure fossil, it has 

 an extensive range, Prof. Phillips having recorded it from the 

 Mountain Limestone of Harrogate and Bolland ; ^ M^hilst Mr. Baily 

 has detected it in the Carboniferous Slate of Clonakilty, co. Cork, 

 and the Upper Carboniferous Limestone of co. Dublin.^ My father 

 informs me that specimens from the Mountain Limestone are in the 

 Oxford Museum. 



Loc. and Sorizon. — From Shale 2|- feet above the Calderwood 

 Cement Stone, Lower Carboniferous Limestone Group, Gleibe Quarry, 

 E. Kilbride, Lanarkshire. Collected by Mr. A. Patton, E. Kilbride, to 

 whom I am indebted for the loan of the specimen. 



Class Gasteropoda. 

 Genus Bellerophon, de Montfort. 

 BelleropJion decussatus, Fleming. Plate YI. Fig. 8. 



Bellerophon decussatus, et? B. striatus, Flem. ; Brit. Animals, 1828, p. 338. 



„ „ Phillips ; Geol. Yorkshire, 1836, vol. ii. p. 231, t. 17, f. 13. 



„ „ D'Orb. ; Hist. Nat. des Cephal. Acet. p. 217. 



„ elegans, ,, „ „ p. 203, t. 7, f. 15-18. 



„ clathratus „ „ „ p. 204, t. 5, f. 12-14, 24-27. 



? „ elegans, D'Arch. et De Vern. ; Trans. Geol. Soc. 1842, 2nd ser. vol. vi. 



pt. 2, p. 354, t. 29, f. 2. 

 „ decussatus, Morris; Cat. Brit. Foss. 1843, p. 169. 



„ ,, Portlock; G-eol. Kept. Lond. 1843, p. 399, t. 29, f. 6. 



? ,, striatus et ? B. clathratus id.; ibid. p. 400, t. 29, figs. 7 and 8. 



? ,, interlineatus, Portlock; ibid, p. 402, t. 29, f. 11. 



„ reticidatus, McCoy; Synop. Carb. Foss. Ireland, 1844, p. 25, t. 2, f. 5. 



„ decussatus, de Koninck; Descr. Animaux Foss. 1844, p. 339, t. 29, 



figs. 2 and 3, t. 29, f. 2 & 3, t. 30, f. 3. 

 5, 5, et ? B. striatus, Tennant; Strat. List Brit. Foss. 1847, 



p. 107 (without description). 

 „ „ Bronn ; Index. Pal. Nomen. 1848, p. 162 \ without 



? „ elegans, „ „ ,, p. 163 j description. 



„ decussatus. Brown ; Foss. Conch, 1849, p. 38, t. 26, f. 21. 



„ „ McCoy ; Brit. Pal. Foss. p, 552. 



„ ,, et? B. striatus, Morris; Cat. Brit. Foss. 2nd ed. 1854, 



pp. 287, 288 (without description). 

 „ ,, Eichwald; Lethsea Bossica. 1860, vol. i. p. 1090. 



„ „ de Koninck ; Mon. Foss. Carb. Carinthie, 1873, p. 97, t. 4, 



fig. 1. 



Ohs. — For a full description of this Belleroplion I must refer those 

 interested to the works of Professors de Koninck and McCoy. B. 

 decussatus is usually figured with a more or less partial reflexion of 

 the inner lip over the body of the shell, usually as a semicircular 

 callosity or investment, giving rise to lateral prolongations or wings, 

 which at times almost conceal the umbilicus. The simple reflexion 

 without the lateral prolongations is seen in Prof, de Koninck's figure 

 given in his earlier work, and also in that of B. elegans, D'Orb., given 

 by MM. D'Archiac and de Verneuil in their paper on the " Older 

 Deposits in the P^henish Provinces," quoted above. Fig 8 is a re- 

 presentation of what ajDpears to be a more complete state of the 



1 Geol. York. 1836, vol. ii. p. 213. 



2 Char. Foss. 1875, vol. i. part 4, p. 113. 



