738 



Mr. Lonsdale on the Age of the, S(c, 



Genera and Species. 



Strygocephalus Burtini". ...-! 

 Producta rugosa' -i 



Calceola sandalina' 



Pleurorhynchus, sp. new 

 Megalodon cucuUatus^ ... 

 carinatus 



Pterinea radiata' 



Pecten plicatus* 



Corbula Hennahii 



Pileopsis vetusta 



Trochus Boueii 



Euomphalus radiatus 

 Turritella abbreviata., 



bilineata ? . . 



Murex Harpula 



Terebra Hennahii 



Buccinum spinosum^ 

 breve^ 



acutura* 



imbricatum-. 



Beilerophon striatus .... 

 Orthoceras tubicinella- 

 Cyrtoceras nodosa' 



Brontes flabellifer 



De France, Die. Sciences Nat. pi. 75. Te- 1 

 rebrat. porrecta, M.C. 576, f. 1 J 



Strophomena, Bronn, Leth. Geognos. 2, "I 

 f. 8-c J 



Lamarck, Anim. sans Verteb. 2 edit, tome 1 

 7, p. 294 / 



Localities in Devonshire. 



Sow. M.C. 568 



Goldf. 132, f. 9 



Goldf. 119, f. 7 



Sow. M.C. 574, f. 3 



Sow. LVI. 1 



Sow. M.C. 607, f. 1-3 



Steininger, Mem. Geol. Soc. France, t. i. "1 



Pi. 23, f. 4 i 



Goldfuss, MS 



Sow. M.C. 565, f. 2 



Goldfuss, MS 



Sow. M.C. 578, f. 5 



Sow. Ency. Metro. Art. Geol. p. 578 



Query, Mem. Geol. Soc. France, t. 2 



PI. II. f. 25 



Sow. M.C. 566, f. 4 



Sow. M.C. 566, f. 3 



Sow. M.C. 566, f. 1. Phill. Geol. York. 1 



Pt.II.. PI. 16, f. 11,23 / 



Sow. M.C. 566, f. 2. Phill. Geol. York. I 



Pt. II., PI. 16., f. 9, 17, 20 / 



Bronn. Leth. Geog. 1, f. 11-c 



Sow. LVII. 29 



Spirula, Bronn, Leth. Geog. 1, f. 4-b. ... 

 Goldfuss, Act. Acad. Caes. Leop. Nat. \ 



Cur., Tom. XIX. PL 33, f. 3 / 



Devonian. 

 Devonian. 

 Devonian. 



Devonian 



Devonian 



Devonian 



Devonian 



Devonian. — Carbonifer. 



Devonian 



Devonian. — Carbonifer, 



Devonian , 



Devonian 



Devonian 



Devonian 



Devonian 



Devonian 



Devonian - 



Devonian 



Devonian. — Carbonifer. 

 Devonian. — Carbonifer. 



Devonian. 

 Devonian. 

 Devonian. 



/Newton Bushel, E. & W. 

 t Ogwell, Bradley. 



Ibid. Plymouth. 



Chercombe Bridge, E. Ogwell. 



Plymouth. Bradley. 



Newton Bushel, E. Ogwell. 



Ibid. Ibid. 



Ibid. 



Plymouth. 



Ibid. 



Newton Bushel. rr. ■■, 



W. Ogwell. (Slate.) Chercombe 



Newton Bushel. 



Ibid. Chudleigh. 



Ibid. 



Bradley near Newton Bushel. 



Plymouth. 



Bradley near Newton Bushel. 

 Ibid. 



Ibid. 

 Ibid. 



Newton Bushel. 

 Ibid. Plymouth. 

 Ibid. 



Ibid. 



• No reference is made in this table to foreign localities, as the comparison of the Devonian fossils with those of Westphalia, the Eifel, and other 

 Continental regions, will be fully given in the papers about to be laid before the Society by Professor Sedgwick and Mr. Murchison. 



(6.) Favosites spongites. It is extremely difficult to separate some of the Devonian specimens, assigned provisionally lo this species, from a coral which 

 occurs in the mountain-limestone at Bristol. In polished sections no traces can be detected of connecting foramina, and the character of the tubes 

 is also the same in the carboniferous and Devonian fossils. These corals bear much more the aspect of Fischer's genus Chaeletes than that of 

 Favosites. For an opportunity of examining several specimens of the Bristol coral 1 am indebted to Mr. Pratt. 



(c.) Favositest ramosa. In the collection of specimens from the Eifel, presented to the Geological Society by Mr. Willimott, is one labelled Favo- 

 sites ramosa (nob.). It was obtained originally from M. Brassart, of Bonn. The specimen is evidently not a Favosites ; but its state of decompo- 

 sition, and that of several others kindly lent me by Mr. Murchison, forbid the characters being properly ascertained. The fossil consists of long 

 slender branches, perforated down the centre, and presents a carious structure resembling that of the genus Scyphia. 



(rf.) The Spirifera rotundata of the mountain-limestone is believed by some conchologists to be the same species as the Spirifera ostiolata, but a 

 comparison of specimens proves that the shells are distinct. S. rotundata has broad flat ribs, which subdivide at irregular distances from the beak, 

 and are traversed transversely only by fine lines of growth : in S. ostiolata the ribs are proportionably less broad, do not subdivide; and in addi- 

 tion to fine lines of growth, are traversed longitudinally by numerous delicate strise : minute prominences are also visible under the lens, irregu- 

 larly scattered, and having no dependence on the intersection of the lines of growth with the longitudinal striae. 



(e.) Bronn considers Spirifera hisulcata of the carboniferous limestone the same species as Spirifera aperturata ; but the beaks of S. bisulcata are 

 in contact, while those of S. aperturata are separated. The elevated central portion in the larger valve of S. aperturata is also distinguished by 

 the ribs being slightly in relief, and by the two ribs bounding the elevated portion forming sharp ridges. It has been thought necessary to enter 

 into these details to assist in defining the limits of the range downwards in the series of mountain-limestone species. 



