about 5 mm. being lacking; the transverse process is missing from one side and is incomplete on the other side. It is comparatively stout and springs from the side of the neural arch. Dimensions (in cms.). Height 18.5 Centrum— height 8.5 width 12 Neural canal— width 9.5 height 3.4 Neural spine (tip to inner surface of arch) 6.5 Transverse process, from inner surface of arch 14 height at base 5 Humerus (of no. 2). A short bone measuring 11 cm. by 8 cm.; has a rounded “head” at one end and two convex condyles at the distal extremity separated by a slight furrow. One condyle measures 5 cm. across, the other 3.5 cm. The scapula (no. 2) is embedded in plaster of Paris; it belongs to the right side and exhibits its outer face. The supra-scapular border, the margin of which is broken, forms a semicircle. The acromion, which is broken at the end, is of rather large size, but of the usual shape: it does not spring from the actual coracoid border, so that a small narrow prescapular fossa exists, whose extent is partly concealed by the plaster which covers its edge above the origin of the acromion. The coracoid process appears to be even less defined than in that whale, but it may be that the plaster conceals part of it. I did not wish to dig out the plaster, as the bones are so friable. A slight ridge extends from the base of the acromion along the surface of the blade reaching almost to the suprascapular border (broken). This is like the bladebone of Mystacocetes, but differs from modern Odontocetes. Dimensions (in cms.). Total height from glenoid to middle of suprascapular border 26 Width 32 Acromion— Length 11 Width at base 11.5 Width at free end 7 Glenoid width (ant. post.) 9 Distance from coracoid to origin of acromion 4.5 Ribs. Eleven more or less imperfect ribs were arranged in the case in what is approximately their correct position, presumably so arranged by Hector. One of the longest measures 73 cm. in a straight line from head to end, and 95 cm. along the curve.