326 
DR. R. W. SHUFELDt’s MORPHOLOGICAL 
where it shows two deep rounded notches on either side of the 
carina. The outer pair of lateral processes which are thus pro- 
duced have expanded posterior ends. As already stated, each 
costal border supports four small transverse facets for the hsema- 
popbysial ribs, which are crowded pretty close together. Beyond 
these the costal processes are of a quadrate outline on either side, 
and are directed upwards and very slightly forwards as conspicuous 
projections. 
Trihedral in form and rather inclined to bifurcate at its summit, 
the w r ell-developecl manubrium is cultrate mesially in front and 
this prominent apophysis rears itself upwards and forwards from 
its usual site, as seen in birds generally where it is present. 
Immediately behind it are the coracoidal grooves, which, though 
narrow from above downwards, extend far out laterally and meet, 
or very nearly meet, at the middle point posterior to the manubrial 
base. 
The keel of this hone is comparatively deep and extends the 
entire length of the sternal body, wdiile its inferior border is 
gently convex for its entire length forwards, and its anterior one 
considerably concave. At their intersection in front the carinal 
angle is bluntly rounded off. 
From the fact that the xiphoidal processes are spreading in 
character and the sides of the sternal body uniformly raised, 
not an inconsiderable concavity is enclosed on the thoracic 
aspect of this sternum ; and, as is usually the case in birds of 
this form, the pelvis above is seen to he correspondingly wide- 
spread, indicating roomy abdominal and thoracic cavities within 
their enclosure. 
Pneumaticity is not a prominent feature of the sternum among 
the Trogons, although a few insignificant foramina do admit air 
to this hone where such openings ordinarily occur. 
Of the Shoulder- Girdle (PI. XIX. fig. 13). — We find the os 
furcula to he of the U-shaped variety, with a well-formed hypo- 
cleidium of a rounded outline at its clavicular junction beneath. 
The limbs of this hone are slender, while the heads are somewhat 
expanded and much compressed laterally. They rest against the 
mesial aspects cf the superior tuberosities of the coracoids, and 
on either side extend backwards to the scapula, which they over- 
lap to some extent, resting upon the upper side of the clavicular 
process of the bone. 
A scapula here makes the usual articulation with a coracoid 
