1889. ] EOCENE SILUROID FISHES. 207 
10. 
ll. 
13. 
14. 
Fauna of the Tertiary Deposits of the Highlands of Padung, 
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(1888). 
EXPLANATION OF PLATE XXI. 
All the figures are natural size except numbers 8 and 9, which 
are reduced one third. 
Fig. 1. Arius crassus, Koken. Skull from the Upper Eocene of Barton, m 
the Museum of Practical Geology, upper surface. 
. Same specimen, under surface. 
. Otolith from right side of same specimen: a, upper surface; 4, lower 
surface ; ¢, side view. 
. Arius species A. Otolith (left?) from Upper Eocene of Barton, in 
the British Museum. 
. Arius species B. Otolith (right ?); ditto, ditto. 
. Arius species C. Otolith (right ?); ditto, ditto. 
. Arius baroni, n. sp. Otolith (right?) from Ankoala, Madagascar, in 
the Baron Collection, British Museum. 
. Arius gagorides, Cuy. & Val. (living species, from Calcutta). Upper 
surface of left half of a skull 84 inches long, two thirds natural size. 
In the British Museum. 
. Same specimen, lower surface. 
. Otolith (right?) from same specimen, natural size; letters as in 
figure 3. 
SID Be Oh 
ie) 
os 
1 
$.0., supraoccipital ; ep.ot., epiotic (?); pa., parietal (?); pd.tem., post tem- 
poral; pt.ot., pterotic; sp.ot., sphenotic; /7., frontal; pr.f/7., prefrontal ; 
eth., ethmoid ; /r.pr., transyerse process of vertebra; Am., articulation for 
hyomandibular. 
