JOURNAL OF PROCEEDINGS. 679 
neural spine , five in all, sever rally, vary in different classes so as, in m 
neath the gullet—ag an indenture ondrosis, mostly—the ea 
like a bird’s ischium attached to the ride oft the (ileoid) scapula, with 
caudate exsinuate extremity, forms a true simile (although in a should) % 
the arcus pubi mammals ; while the ents; lithe, Eras coracot pr 
ment (originally, in young mammals likewise sejunct) uch of se 
loose appearance of the bifurcate, sternally scing 
birds, and synchondrosed with the retrorsely oie ee ischium, whie 
leaves but Je p asia Sota corted slit for a foramen obturatium, and an “ 
ted” remnant of the ischiadic passage between itself and the Peg 
riled 2 se it ee eee nd. All this is exhibited in the collection to 
presented when ea 
In birds, the poe is but loosely peer 2 with the slender esa 
blade and the flat and ex: sinuateite viele—which stems the m (Or 
fusion of collateral peal % icles of poor origin) — ia a a ‘tenabriel 
attachment, is fused with its gmier r of the other side into a t gothic arch of 
tgiearcane poneae 
vane, and h independent erely residual, 
marginal cartilage, are a fo fifth entres, deficient in the adul a 
skeleton, but already strongly developed in fishes, for t ete hie 
the scapular blade to the neural arch by the intervention of the m 
fur pst (co “atin ih: ossicle or) marginal t terminal, joining 
nen 
bearing a terminal connective ossicle; whil 
ment, circumscribing an aperture, in mammals forms 3 ee 
in turtles, the infundibuliform ditory orm ulate-infla- 
Cavity, in some cases immediately openin sore bo ° eane m in- 
ted, vast and retrospectant mastoid space, leavi line tribe, repre- 
side ; but in porcine and ruminant mammals, and ie fe ith 8 eajnctiats 
senting the ear-drum projecting underneath the sk disjointed, fire— 
trabecular tissue: and all gh arte as the processes are ny eect attach- 
Le of the ee region are but a simile of all the other, 
ing 
peshetaite levers, or, as the case may be, d 
esh, as in Articulata—where exactly the same 
a thts 
ws 
glenoid articalatiots for a! 8 bro cogent Fe continuous ‘rats 
are prefo ? 
“insections,’ of the 
mals the gore glenois bears a wel ight ar fmentaa ex- 
mandible a? birds, the See val of the et snare’ mals (see pre- 
bcs is stemmed into atal cleidoi eth ile the aviary 
tributions) the Raat p ‘no on the top of this 
= ndible (as in fishes, and amphibia like ) nd in birds is nded 
fish- 
y by a strong sinew from the obsolete or ery ag man !— 
es, the true auditory ossicles—as erroneous 
Ty ina eon nera et ne Rey 
