( 265 ) 



pectineal tubercle is short and blunt; immediately anterior to it is a very well 

 marked depression in the ilium. 



lu the specimen figured the most anterior of the fused vertebrae constituting 

 the sacrum bears a cajiitular facet for a fused rib. Behind this are four vertebrae 

 which unite with the ilium by their broad parapophyses. Immediately behind the 

 acetabulum is a single pair of sacral ribs, forming a thin buttress-like division 

 between the anterior and posterior renal fossae. The latter, as in other rails, is con- 

 tinued backward as a deep pocket-Hke depression, floored by the ilia, which are here 

 supported by four caudal vertebrae with very wide transverse processes. 



The dimensions of the pelvis in millimetres are : — 



Extreme length of the ilium 

 Width at antitrochanters . 

 Least pre-acetabiilar width (at middle 



iliac fossae) 



Length of sacrum .... 



of 



F. newtanU i F. cristata. F. atra. 



90 

 29 



13 

 84 (?) 



7S 

 26 



U 

 71 



13 

 69 



Specimen A is that figured in the present paper, specimen E that figured by 

 Milne-Edwards. The pelvis of F. cristata, measured by Milne-Edwards, was some- 

 what larger than the specimen of which the dimensions are now given, its length 

 being 84 mm. 



The femur is very like those of the recent coots, and perhaps most nearly 

 resembles that of Fidica cristata. From the corresponding bone of F. Tieivtoni it 

 differs, as far as one can judge from the figure, in the smaller size of the trochanter, 

 which rises less above the head. Moreover its shaft seems to be somewhat stouter in 

 proportion to its length. 



The tiMo-taraus differs from that of F. iiewtoni in size and also in the greater 

 stoutness of its shaft, but in general structure it is very similar both to it and to 

 the tibiae of recent coots. 



The tarso-onetatarstcs is also typically Fulicine, and when compared with those 

 of F. atra and F. cristata is found to differ only in unimportant details, e.g. its shaft 

 is rather thicker in proportion to its length, and the depression in the upper portion 

 of its anterior face is somewhat deeper and extends farther down the shaft ; in 

 F. neivtoni this bone is considerably more slender. The intermuscular ridges and the 

 grooves for tendons are strongly marked, and in all the specimens I have examined 

 the articular impression for the hind-toe is distinct, and although, as the measure- 

 ments given below show, this digit is rather shorter than in the recent coots, it is liy 

 no means rudimentary. The other digits, as in Fuiica, are very long and slender. 

 The dimensions of the bones of the hind-limb are : — 



FeviW : 

 Ijength 

 Width of upper end . 



„ lower end . 



„ middle of shaft 



Tihio-tnrxus : 

 Length 

 Width of upper end . 



,, lower end . 



,, shaft . 



19 



