108 DEVONIAN FAUNA. 



5. Cyrtoceras lineatum, Goldfnss ? 



1832. Ctetoceea lineata, Ooldf. In De la Beche's Handbook (German ed.), 



p. 536. 

 1834. Orthoceeatites caltculaeis, Steininger. Mem. See. Greol. Fr., vol. i, 



pt. 2, p. 369, pi. xxiii, fig. 5. 

 1834, — YENTEicostrs, Steininger. Ibid., vol. i, pt. 2, p. 368, pi. 



xxii, fig. 5. 



1841. Ctetoceeas maeginale, Phil. Pal. Foss., p. 115, pi. xlvi, fig. 219. 



1842. Ctetoceeatites lineatus, D^Arch. and de Vern. Geol. Trans., ser. 2, vol. vl, 



pt. 2, p. 351, pi. XXX, figs. 2, 2 a. 



1843. Ctetoceeas venteicostim. Bom. Verst. Harz., p. 35, pi. x, fig. 1. 



1849. Cyetocebatites depeessits, Quenstedt. Petref. Deutscb., Band 1, pt. 1, 



p. 47, pi. i, figs. 17 a, b. 



1849. Ctetoceeas lineatum, D'Orhigny. Prod., vol. i, p. 53. 



1850. — MULTiSEPTATTJM, F. A. Rom. Beitr., pt. 1, p. 38, pi. vi, fig. 2. 



1852. — Nessigi, Giehel. Fauna Vorwelt, Band 3, pt. 1, p. 201. 

 1852? — ^VBCO^iCTSM., Sandherger. Verst. Ehein. Nassau, p. 146, pi. xvii, 



figs. 1, 1 a. 



1853. — likeatttm., Steininger. Geog. Besch. Eifel, p. 41. 

 1888. — maeginale, Etheridge. Foss. Brit., vol. i. Pal., p. 167. 

 1888. — LINEATUM, Foord. Cat. Foss. Ceph. Brit. Mus., vol. i, p. 267. 



Description. — Septa very large, close, slightly concave, distant about one-eightli 

 or one-ninth of their diameter. Siphiincle large, about 6 mm. in diameter, close 

 to margin, elliptic, diagonally elongate. Shell-structure very thick and massive. 



Size. — Width of the septum, 55 mm. 



Localities. — A single specimen from Lummaton is in my Collection. Phillips's 

 figured specimen is from Wolborough. 



Remarks . — The material for establishing this species in the present series is 

 scanty in the extreme. Phillips described a single large septum, and the one in 

 my possession, though still larger, is too imperfect even to define its shape. At 

 the same time these two fossils give evidence of a very large Cephalopod, quite 

 distinct from the other species of these localities. 



In the British Museum is a specimen of a very large Cephalopod from " Ivy 

 IJridge Quarry, near Newton," which probably is the same species, and which 

 Mr. Foord has identified with G. lineatum, Goldf., with whose description our own 

 fossil fairly agrees. From this species, however, as described by d'Arch. and de 

 Vern., C. marginale (including our specimen) seems to diS'er in having the ventro- 

 dorsal diameter slightly greater than the transverse, and in the siphuncle being 

 elliptic in section. An examination of a good series of foreign specimens like 



