234 Transactions. — Zoology. 



Table of Measurements. 



Hamilton Corresponding bone of 

 £it^i!.o^ -ff. assimilis from 



Specimen. Glenmark. 



Inches. Inches. 



Eight tibia, length 8-30 892 



Circumference of shaft where thinnest .. 1"90 1'91 



Circumference of proximal end . . . . . . 4-10 4-06 



„ distal end 3-85 3-80 



TJlna. 

 There are two nlnas, both of the right wing, of which No. 1 doubtless 

 belongs to the tibia whose measurements are given above. 



Hamilton Con-esponding Bone of 



Specimen. Glenmark. 



No. 1. No. 2. 



Total length 9-30 9-60 9-35 



Circumference at proximal end 2'90 . . 300 



„ „ distal end . . 2-24 . . 2-32 



Shaft where thinnest .. .. 1-50 1-62 1-48 



No. 1. — This bone is also somewhat more slender in its proportions 



than the corresponding bone obtained at Glenmark, but it has at the same 



time the characteristic features of the bones belonging to a full-grown bird. 



No. 2. — This evidently belonged to a larger specimen of the H. assimilis 



size. It is a shade stouter than the corresponding Glenmark bone. Both 



extremities are partly broken off. 



Metacarptis. 



Among the bones from Hamilton is also a right metacarpus, agreeing in 



all its proportions with the tibia and ulna No. 1. 



Total length, 4-27 inches, or '21 inch less than the corresponding bone 



from Glenmark, the total length of which is 4-48 inches. The latter is also 



a little stouter in all its proportions. Amongst the smaller bones there are 



a few ribs and some phalanges, all of which are similar to the corresponding 



bones of Glenmark, with the exception that they are all a little smaller. 



The last specimen to which I wish to draw your attention is the distal end 



of a femur (right leg) of Harpagornis moorei, obtained, according to Mr. 



Booth, in a gully a mile away from the turbary deposits of Hamilton. It 



was evidently extracted from a loess bed. It accords so closely in size and 



other distinctive features with the femur of B. moorei from Glenmark, that 



I need not offer a description of it. 



DESCEIPTION OF PLATE IX. 



1. Upper view of mandible of Harpagornis assimilis, von Haast. 



2. Lower ,, ,, ,, ,, ,, 



3. Outside ,, „ „ „ „ 



4. Inside ,. „ „ ,, „ 



All natural size. 



