CEPHALASPJD^, 
191 
1890. Cephalaspis camybelltownensis , R. H. Traquair, Geol. Mag. [3] 
vol. vii. p. 21. 
1890. Cephalaspis whiteavesi, R. H. Traquair, ibid. p. 21. [Shield; 
Edinburgh Museum.] 
Type. Shield ; Geological Survey Museum, Ottawa. 
A species of large size, the shield with cornua attaining a length 
of not less than 0'18. Shield produced anteriorly into a short, nar¬ 
row, sharply rounded rostrum ; orbits placed nearly midway between 
the anterior and posterior margins ; cornua long, broad at the base, 
acutely pointed, slightly inflected, and finely denticulated on the 
inner margin. Cornua ornamented with fine reticulating rugae ; 
[ornament of shield unknown]. 
The peculiar rostrum of this species is solid, much resembling 
that of Pteraspis. It is well shown in the type specimen, though 
accidentally omitted in the original description and restored outline. 
As remarked by MTiiteaves, the relative proportions of the orbits 
and interorbital space vary considerably—the result, probably, of 
accidental crushing. 
Form. 6)' Log. Lower Devonian ; Campbellton, New Brunswick. 
P. 5477. Slab of shaly rock with remains of four shields, associated 
with fragments of Phlyctcenaspis and plants. 
Purchased , 1888. 
P. 5970. Remains of a very large shield, with orbits and one c-ornu. 
Purchased , 1889. 
P. 5478. Crushed shield with cornua. Purchased , 1888. 
P. 5479. Anterior two-thirds of shield, with rostrum, shown, of 
two-thirds the natural size, in PI. IX. fig. 5. 
* Purchased , 1888. 
P. 4576. Similar specimen, with rostrum relatively shorter and more 
acutely pointed. Purchased , 1888. 
P. 5971. Fragment with rostrum. Purchased , 1889. 
P. 5480. Imperfect impression of inner aspect of shield, with the 
inferior rim. Purchased , 1888. 
P. 5971 a. Fragment showing part of the hinder border of the 
shield. Purchased , 1889. 
P, 5974. Fragmentary squamation, probably of this species. The 
scales are ornamented with verv fine tubercles often fused 
V 
Purchased , 1889, 
m series. 
