. Annals of the Carnegie Museum. Carnegie Museum; Carnegie Museum of Natural History; Natural history. SllLl' : USIEOUJGV Of THK ; 29 The manubrium of the sternum is a stumpy jjrocess, shaped like a wedge, being notched al)Ove and sharp below. Above this jjrocess the coracoitlal grooves nearly meet at a i)oint in the mesial plane at its base, Avhile the lateral processes of the same name, of a triangular form, rise only to a moderate degree above the superior margin of the bone, to bear along the posterior border of either one, the facettes for the costal ribs, six on each s
. Annals of the Carnegie Museum. Carnegie Museum; Carnegie Museum of Natural History; Natural history. SllLl' : USIEOUJGV Of THK ; 29 The manubrium of the sternum is a stumpy jjrocess, shaped like a wedge, being notched al)Ove and sharp below. Above this jjrocess the coracoitlal grooves nearly meet at a i)oint in the mesial plane at its base, Avhile the lateral processes of the same name, of a triangular form, rise only to a moderate degree above the superior margin of the bone, to bear along the posterior border of either one, the facettes for the costal ribs, six on each side. The xiphoidal extremity of the body of the sternum of-£. ntontana is four-notched, the notches being deep, and gi\ing rise to five proc- esses, a median one, the under surface of which supports the hinder part of the carina, and a pair on each side of it. In Vaiiellus the inner pair of jjerforations are subelliptical foramina and not notches. Fio-]. Fig. 7. Pelvis of Charadriiis doininicus, right lateral view. Natural size (Spec. 16715 Coll. U. S. Nat. Mus.). Fig. 8. Pygostyle and last caudal vertebra of Cliaradrhis doininiciis; right lateral view. Natural size. Same specimen. Jn the sternum of a Killdeer Plover at my hand (^. vocifera) the inner notch on the right-hand side is also converted into a foramen. C. squatarola has them as in ^. moutana. Viewed laterally the sternum of a Plover very closely resembles that l)one as we see it in Aphriza virgata ; indeed, in so far as shape is concerned, irrespective of mere size, this bone is of a very uniform pattern throughout the majority of our typical Limicolce — the Woodcock, (^Philohela,^ and Wilson's Snipe, i^Gallinago,') being conspicuous departures therefrom. Ossification in Plovers is normally extended, as in so many other birds, to the plate of the superior larynx, the rings of the trachea, and a few tendons and sesamoids. Of the Appendicular Skeleton.—The chief j)oint of interest that attaches to the limbs of our
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