847 



The spine* of the third to the wreath cervical are short and of equml length : in the Dotyunu 

 maeronnu the spines progressively increase in the U*t three cervical*. Besides the noo- 

 deveJopment of the hallux, the t'nuuc Dasyure differ* from the cnudler apeeiM at Dasyure in 

 the massive character of the head and teeth, which haa led to iU separation aa a distinct 

 (a, under the name of SarropAHut. The transverse proceaaea of the aixth cerriral ver- 

 tebra are first pierced by the rertebral artery : 7 mtebnc are cenrical. 13 are dorsal, 6 are 

 lumbar, S are sacral, and 1 7 are caudal : of the but, the third to the tenth inclusive hare 

 hsrmapophyaes. Both anapophysc* and metapophyica commence at the elereuth dorsal : 

 the anapophyses increase to the aecond lumbar, diminish in the two following, and disappear 

 in the fifth : they undcrlap the metapophyset of the first three lumbar vertebrae. The met- 

 apophyses are continued throughout the sarral and a great part of the caudal region, in which 

 the lygapophyaea ceaae to be developed at the eighth vertebra. The diapophyte* are not 

 obliterated in the last dorsal vertebra, which render* their aerial bomology distinctly traceable 

 along the lumbar region. 



Pretexted by Ronald Guxx, Etq. 



1899. The akull of an Ursine Dasyure (Dasyuritt urtixut). 



Pretexted by H. Everett, E*q. 



1900. The skull of the Ursine Dasyiire, longitudinally and vertically bisected. 



Pretexted by Prof. Owen, F.R.S. 



1901. The mutilated skull of an Ursine Dasyure (Datyurtu urrima). 



Pretexted by Ronald Gunn, K(j. 



1902. The greater part of the maxillary, premaxillary, and mandibular bones, with 

 the teeth, of an Ursine Dasyure. The last upper molar tooth of the left side 

 is wanting. Pretexted by Ronald Guxx, faq 



Genus Thylacixxt. 



1903. The skeleton of a male Thylacine, or Pouched Hyaena of the Tasmanian 

 Colonists (TliylacintiH cynocephaltu). 



The atlas equals the occiput in breadth : the spines of the but four cervical* progreativdy 

 increase. The convergence of those of the dorsal and lumbar vertebra? toward* the tenth 

 dorsal indicate* that to have been the centre of motion in the trunk. There are no ossified 

 marsupial bones in this genus. The inner condyle of the hunieni* is widely perforated. 

 There is a large internal cuneiform bone, but no trace of the inner toe. Neither the patella 

 nor fabellie appear to have been ossified. The seventh (but) cervical vertebra i* pierced by 

 the vertebral artery : 13 vertebra: are dorsal, 6 are lumbar, 1 are sacral, and 23 are caudal ; 

 of these last, the fifth to the ninth inclusive have hcmapophyse*. The dental formula it : 

 i!=^ e \^,pf^m=46. The incisor* are of equal length, and regularly arranged in 

 the segment of a circle, with an interspace in the middle of the scfatt of both jaws. The 



2 T 2 



