ON THE UPPER OLD RED SANDSTONE OF DURA DEN. 123 
The ornamental ridges here radiate chiefly from the posterior cornu and 
the outer margin and are most widely spaced on the postero-internal 
part of the plate. No vacuities are observable in any of the plates, 
but all of the anterior pairs are crossed by slime-canals in continuation 
of the radiating canals on the anterior median plate. The total 
length of the fossil is 12.5 cm. 
The ornamentation of the posterior median plate of the specimen 
just described seems to justify its reference to the typical species, 
Phyllolepis concentrica, already known by imperfect plates from 
Clashbennie, Perthshire. It is also interesting to add that some of the 
other plates agree well with specimens found in association with 
P. concentrica in the Upper Devonian of Belgium.> The ornament of 
the anterior median plate corresponds with that of the so-called 
P. corneti,® while both the ornament and shape of some of the lateral 
plates are essentially the same as those of the small plates named 
Pentagonolepis." The plates forming the lateral cornua do not appear 
to have been previously seen. 
The whole fossil is most suggestive of the ventral aspect of the 
curious Devonian Ostracoderms Drepanaspis* and Psammosteus.? It 
agrees with Drepanaspis in showing two principal median plates one 
behind the other, though in Phyllolepis they are more nearly equal 
in size. It corresponds with Psammosteus in exhibiting a prominent 
pair of lateral cornua at the hinder end of the series of small marginal 
plates, opposite the middle of the posterior median plate. It differs 
from both in lacking separate small tessellated plates. There is, there- 
fore, not much doubt that Phyllolepis is a genus of Ostracoderms most 
nearly allied to the Drepanaspide or Psammosteide. 
Antarctic Whaling Industry.—Report of the Committee, con- 
sisting of Dr. S. F. Harmer (Chairman), Dr. W. T. CALMAN 
(Secretary), Dr. F. A. Baruser, Dr. W. S. Bruce, and Dr. P. 
CHALMERS MITCHELL, appointed to provide assistance for 
Major G. E. H. Barrett-Hamilton’s Expedition to South 
Georgia to investigate the position of the Antarctic Whaling 
Industry. 
By kind permission of the Trustees of the British Museum the Com- 
mittee arranged for Mr. P. Stammwitz, a taxidermist employed at the 
Natural History Museum, South Kensington, to accompany Major 
Barrett-Hamilton to South Georgia; and the greater part of the grant 
* M. Lohest, ‘Recherches sur les Poissons des Terrains Paléozoiques de 
Belgique,’ Ann. Soc. Géol. Belg., vol. xv. (1888), Mém., pp. 155-167, pls. x., xi. 
®° M. Lohest, loc. cit., p. 157, pl. x. fig. 6. 
7 M. Lohest, loc. cit., P. 161, pl. xi. figs. 1-8. 
‘R. H. Traquair, ‘Additional Note on Drepanaspis Gemiindenensis, 
Schliiter, ’ Geol. Mag. [4] vol. ix. (1902), pp. 289-291. 
7A. 8. Woodward, ‘On the Upper Devonian Ostracoderm, Psammosteus 
taylori,’ Ann. ALag. Nat. Hist. [8] vol. viii. (1911), pp. 649-652, pl. ix. 
