60 ON THE SCAPULA (?), CORACOID, 
the structure usually found in the fra of a reunited bone ; 
a full account of this structure was given by Dr: Embleton in a 
ea read before the: Nosthutibarlaid and Durham Medical - 
ciety. 
“The exo-skeleton may still be res rs in a state of doubt, 
as the chief authorities, Mr. Barkas and tthey, differ. Mr. 
Atthey asserts that he has discovered the ime of C. elegans and 
in the following words, quoted from his “ Coal Measure Paleon- 
tology ”: “ Alt hough nearly 1,000 teeth of Ctenodus have 
been fi bai in the Northumberland Coal Formation, and a large 
pro of those teeth of considerable size, and a though 
many nt of the Ctenodi have been discovered in Staffordshire 
and el ere, it is a remarkable fact that, up to the present 
time rong single specimen of a large scale has been-found at all 
resembling the reputed scales of C. elegans, and there are not 
any uninterpreted or undescribed scales discovered in the Nor- 
a or Staffordshire Coal Measures that can with 
assigne scales 
proprie e assign i) 18. are vastly 
more nu than teeth, if 1,000 teeth of néated fishes 
have been discovered, and each fish had only four or six 
teeth, it is surely improbable that all the scales belonging to 
those fishes would have eluded discove 
Ba EN 8 a eae 
seen that -his own fare “Ginectetles disproved his deduction. = 
The rae scales of C. elegans are thus described by Messrs. 
Hancock and Atthey, in oe paper on “ yard and Ctenodus.” : 
In Ctenod elle 
wi “ae aap though imbricated, can scarcely be year trul. 
sdcbba al bation on.” These scales were obt ined fiom 
snr ‘onsered to be a sunaplete fish 4 pee or, i se 
was “much crushed and d ha species 
atthe | afin publish of a fossil dives a? give cake at ee 
of founding any discoveries upon it. The scales of C. obliquus 
appear to have better pestnnes in their favour, for the above con- 
joint authors state, in a foot-note to a paper entitled “ Deserip- 
tive Notes on Fish Remains found in ¢. the Coal Measures at New- 
sham,” that they had obtained “a fine specimen of the greater 
portion of the cranium and part of the trunk of a large Ctenodus 
