Fossils of the Graptolitic Mudstones.
Graptolitidæ.
1. Climacograptus teretiusculus, His. Everywhere.
2. Diplograptus pristis, His. Long Sleddale.
3. palmeus, Barr. Skelgill.
4. tamariscus, Nich. Skelgill.
5. confertus, Nich. Skelgill.
6. Monograptus Sedgwickii, Portl. Skelgill &c,
7. Nilssoni, Barr. Skelgill &c.
8. spinigerus, Kick. Long Sleddale.
9. intermedius, Carr. Skelgill.
10. gregarius, Lapw. Skelgill.
11. discretus, Nich. Long Sleddale.
12. sagittarius, His. Mosedale &c.
13. lobiferus, M'Coy. Skelgill.
14. turriculatus, Barr. Long Sleddale.
15. fimbriatus, Nich. Skelgill.
16. triangulatus, Harkn. Skelgill.
17. Rastrites peregrinus, Barr. Skelgill &e.
18. distans, Lapw. Long Sleddale.
19. Retiolites perlatus, Nich. Long Sleddale.
Actinozoa.
2. Favosites, sp. A form with smaller corallites than the preceding, and having the walls perforated with numerous minute irregular mural pores; corallum pyriform. Known from casts only. Skelgill.
Brachiopoda.
1. Strophomena expansa, Sow. Skelgill.
2. Orthis vespertilio, Sow. Skelgill.
3. flabellulum, Sow.? Skelgill.
4. elegantula, Dalm.? Skelgill.
5. , sp. A small indeterminable form. Skelgill.
Cephalopoda.
1. Endoceras proteiforme, Hull. Skelgill,
2. Orthoceras angulatum, Wahl, Skelgill,
Crustacea.
1. Agnostus trinodus, Salt. Skelgill.
2. Phacops apiculatus, Salt. Skelgill.
3. Cheirurus bimucronatus, Murch. Skelgill.
4. Harpes Flanagani, Portl. Skelgill.
5. Calymene senaria, Conr. (?). A single imperfect example only. Skelgill.
6. Trinucleus fimbriatus, Murch. Skelgill.
7. Discinocaris, sp. A Phyllopod with a concentrically striated, nearly circular carapace, nearly resembling D. Brouniana, H. Woodward, from the Llandeilo rocks near Moffat. Not uncommon in the Mudstones at Skelgill and Poolwyke.
All the more highly organized fossils of the above list were obtained from beds unequivocally belonging to the Graptolitic Mudstones. Some of them, such as Endoceras proteiforme and the species of
