PLATE. V. 



(Carboniferous Species.) 



1. Spirifera bisulcata, Sowerby. Yorkshire. Collection of Mr. Reed. 



2 } 3. — convoluta, var. rhomboidea, Phillips. Drawn from the original specimen figured in the 



' Geology of Yorkshire,' vol. ii, tab. ix, figs. 8 and 9. 

 4 — 6. — — From Lancashire. Collection of Mr. Parker, of Manchester. 



7, 8. — — From Bolland. Collection of Professor Phillips. 



9 — 11. — — Phillips. From the original example; 'Geology of Yorkshire,' vol. ii, pi. ix, 



fig. 7. Bolland. British Museum. 

 12,13. — — From Clitheroe quarry, Lancashire. Collection of Mr. Parker, of Manchester. 



14, If). — — From Kildare. Museum of the Royal Dublin Society. 



16, 17. Spirifera triangularis, Martin. The original example figured in the 'Pet. Derb.,' pi. xxxvi, 



fig. 2; also 'Min. Con.,' tab. 562, figs. 5 and 6. From Derbyshire. 

 Collection of Mr. J. de C. Sowerby. 

 18 — 21. — — A perfect individual. From Yorkshire. Collection of Mr. Reed, of 



York. 



22. — — An imperfect example. From the Wensleydale district, Yorkshire. 



23. SpuiiFErvA triangularis = sp. ornithorhyncha, M'Coy. This is one of the original examples upon 



which Professor M'Coy founded his species. Loc. Millecent (Clare). 

 Collection of Mr. Griffith. 



24. — — From Bolland ; in the collection of Mr. Reed. 



25. — trigonalis, Martin. After the original figure, ' Pet. Derb.,' tab. xxxvi, fig. 1. Derbyshire. 



26. — — Cast of the interior of the dorsal valve, with beak of the ventral one ; from 



Bakewell, Derbyshire, presented to me by Mr. Binny. a. Adductor 

 impressions. 



27. — — Cast of the interior of the ventral valve, a. Adductor. R. Cardinal 



muscular impressions, o. Ovarian spaces. 



28. — — From Buxton. 



29 — 32. — From a beautiful example in the collection of Mr. Tate. Denwick, 



Northumberland. 



33. — — From Courland, near Dalkeith. 



34. — — Interior, showing the spirals ; from the original example figured in the ' Min. 



Con.,' tab. 265, fig. 1, under the erroneous denomination of Sp. bisulcatus. 



Derbyshire. 

 35 — 37. ? A remarkable and unusual form ; from Campsie, near Glasgow ; in the 



collection of Mr. A. Cowan. 

 38,39. Spirifera grandicostata, M'Coy. After the author's illustrations in the 'British Palaeozoic 



Fossils, pi. iiiD, fig. 29. 

 40 — 42. Spirifera Reedii, Davidson. British Museum. 

 43 — 48. — — Two young examples ; from Settle, Yorkshire. Collection of Mr. Reed. 



