270 Proceedings of the Royal Physical Society. 
specimen under the name of Cephalaspis magnifica, and an 
abstract of the paper read on that occasion has been already 
published in the Annals of Scottish Natural History for 
October last. In the present communication I propose to 
give a more detailed description of the fish, along with an 
accurate figure. 
The species of Cephalaspis which have been previously 
recognised are as follows :!— 
C. Murchisoni, Egert. (Hemicyclaspis, Lank.). Ludlow 
Tilestone and Old Red Sandstone Passage Beds, Hereford- 
shire. 
C. Lightbodii, Lank. Ludlow Tilestones, Ludlow. 
C. Lyelli, Agass. Lower Devonian (Old Red Sandstone), 
Forfarshire, Perthshire, Lanarkshire. With this species Mr 
Smith Woodward unites C. Agassiz, Lank., from the West 
of England. 
C. Salweyi, Egert (Zenaspis, Lank.). Lower Devonian 
(Cornstones), Herefordshire. 
C. Powriet, Lank. Lower Devonian (Old Red Sandstone), 
Forfarshire. . 
C. Paget, Lank. Lower Devonian (Old Red Sandstone), 
Forfarshire. Mr Smith Woodward confirms Lankester’s 
suspicion that C. asper, Lank., may only be the adult form 
of C. Paget. 
C. Dawson, Lank. Lower Devonian, Gaspé, Canada. 
C. Campbelltownensis, Whiteaves. Lower Devonian, Camp- 
belltown, Canada. 
C. Jexi, Traquair. Lower Devonian, Campbelltown, Canada. 
C. laticeps, Traquair. Upper Devonian, Scaumenac Bay, 
Canada. 
Cephalaspis magnifica. 
Cephalaspis magnifica, Traquair, Brit. Assoc. Rep., Nottingham, 1893; 
Ann. Scot. Nat. Hist., Oct. 1893, pp. 206-7. 
The new species from Caithness (P]. VIL.) is large, exceed- 
ing in size any Cephalaspis hitherto described, even the 
_ | For references to the previous literature of Cephalaspis up to 1891, see 
A. Smith Woodward’s Cat. Foss, Fishes Brit. Mus., pt. ii., pp. 176-200, 
U. Jexi, Traq., is characterised in Geol. Mag. (3), vol. x., 1893, p. 147; 
also in Proc. Roy. Phys. Soc. Edin., vol. xi., 1898, p. 114. 
