Here Figure i is the Tasmanian bone, and Figure 2 the hairy-nosed wombat's 
bone. This latter was kindly supplied to me by Mr. Edgar R. Waite, Director 
of the Adelaide Museum. My aim in setting out these facts is more comparative 
than taxonomic, and is intended to show that wide and narrow humeri obtained 
among wombats recent, and extinct, and possibly did so obtain among the 
extinct gigantic Xototheria. if this latter is eventually proved, then Prof. 
Owens’ relegation of a fragmentary platyrhine type of humerus to Notothcrium 
mitchelli may be vindicated. 
I supply a table of comparative measurements for all the humeri illustrated 
in the present text. 
Recapitulative. 
Tt would thus appear that in Northern Tasmania, as well as upon King 
Island, a narrow humeral type of wombat once existed. Also, if the evidence 
of a single humerus cemented to ll:e floor of a limestone cave at Mole Creek 
be accepted, that Tasmania formerly served as a habitat for a wombat with 
approximations to the latifrons type of South Australia, the super-ossification 
of the pectoral ridge of the Tasmanian humerus being practicallv the onh 
difference between the two bones (Vide Plate No. 4). All the humeri from King- 
Island that have come my way agree in having long, narrow shafts, irrespective 
of age: and similarly all Mole Creek humeri yet recovered are of this type 
(irrespective of age) with the single exception of the latifrons bone noted supra. 
All Flinders Island and Tasmanian humeri examined by me agree with the main¬ 
land platyrhine type. It must, however, be pointed out that Messrs. Spencer 
and Kershaw figure (loc. city, plate xi., fig. 13) a platyrhine type of humerus as 
being a King Island specimen, so obviously there is room for extended research 
here. These narrow wombat humeri make a distinct approach to the upper arm 
bones of the phalangers and phascolarctus, and in my opinion are of considerable 
phylogenetic importance. 
