PLATE I. 



(Carboniferous Species.) 



Fig. 



1. Terebratula hastata, Sowcrby. From the original example figured in the ' Mineral 



Conchology.' Loc. Limerick. Collection of J. de C. 

 Sowerby. 



2. — — The largest specimen I have seen from Millecent. Col- 



lection of Mr. Griffith. 



3. — — A very elongated example from Derbyshire, also figured 



by Professor Phillips. British Museum. 



4. — — Ventral valve. Loc. Kildare. 



5. — — From Settle, Yorkshire. Collection of Mr. Reed. 



0. — — A beautiful example from Park Hill, Longnor, Derbyshire, 



in which bands or stripes due to colour are still pre- 

 served. Museum of the Geological Survey. 



7. — — A short, very pentagonal form. In the collection of the 



late Mr. Daniel Sharpe. 



8. — — A young ovate example from Longnor, Derbyshire. 



Museum of Practical Geology. 



9. — — A young specimen (enlarged), showing remains of colour ; 



kindly presented to me by Mr. E. Wood, of Richmond. 



10. — — Interior of the dorsal valve, showing that the loop was short. 



11. — — A short and unusual shape from the Valley of the Maine, 



County Kerry. Museum of the Geological Society. 



12. — — T. virt/oides, M'Coy. From pi. hi d, fig. 23, of M'Coy's 



' British Palaeozoic Fossils.' 



13. — • — yox. feus, M'Coy? A very elongated variety, convex, 



and without mesial depression on either valve. From 

 Park Hill, Longnor, Derbyshire. Museum of Practical 

 Geology. 



14. — — Another similar example in the collection of Professor 



Phillips. 



15. — — T.ficus, M'Coy. From pi. hi d, fig. 22, of the 'British 



Palaeozoic Fossils.' Derbyshire, 

 lfi. -*-- — With remains of colour; from Park Hill, Longnor. 



Museum of Practical Geology. 

 17. — ? Derbyshire. Cambridge Museum. 



18,19,20. — Gillingensis, Dav. From Gilling, in Yorkshire. Collection of Mr. 



E. Wood, of Richmond. 

 21, 22. ? — subtiltta, Rail. From Mayen Wais. Collection of Professor Phillips. 



23. — sacculus, Martin. Pet. Derb. pi. lxiv, figs. 1, 2. 



24. — — A large example from Bolland. Collection of Mr. Read. 



25. 26, 28, 31, 32. Terebratula vesicularis, De Koninck. Yorkshire. Collection of 



Mr. E. Wood. 

 27, 29, 30. — sacculus, Martin. Park Hill, Longnor, Derbyshire. 



