some Ungual Phalanges. 313 



3. The reference of KrefFt 9 s My lotion phalanges to Thyla- 



coleo on the part of Owen was purely " conjectural " 

 (to use his own expression), but at the same time a 

 clever piece of deduction based on his view of the 

 carnivorous habits of the " Marsupial Lion/' 



4. If we accept for the time being, the phalanges called 



Mylodon ? austral is as those of Thylacoleo , such 

 acceptance will not in the least strengthen the views 

 held either by Owen on the one hand, or Flower and. 

 his followers on the other, as to the gastronomical 

 habits of Thylacoleo, hooded phalanges occurring 

 amongst both herbivorous and carnivorous animals. 



5. As possibly referable to Thylacoleo Owen figured two 



entirely distinct types of ungual phalanges. 



We are now acquainted with the pedal bones of Dipro- 

 todon through the reseaixmes of Prof. E. C. Stirling, and it 

 can be legitimately surmised that those of its second 

 cousins Nototherium and Euowenia were similar. None of 

 the Macropodidse can put in a claim ; amongst the flesh- 

 eaters, SarcopMlus and. Thylacinus, and the Dasyures, with 

 the non-marsupial Warrigal, the osteological structure is 

 too well known to require comment. 



Finally, in all probability, although " conjectural " Owen's 

 view of the nature of the hooded nail (eliminating those 

 without a sheath) bones will in the long run prove to be 

 correct; reduction of other genera by elimination supports 

 it. If such be the case, then what is the claw referred 

 to Thylacoleo by Lydekker? This will be investigated 

 immediately. 



The following is the synonymic bibliography of Krefft's 

 ungual phalanges : — 



Mylodon? australis, Krefft, Guide Austr. Foss. Remains, 



1870, p. 4. 



„ australis, Krefft, Austr. Vert. Foss. & Recent 



(Industrial Progress of New South Wales), 



1871, p. 715. 



Spelaean Animal or Unguiculate Mammal, Owen (pars), 



Phil. Trans. 1871, pt. i. pp. 262, 263, pi. xiii. 



figs. 11-12 (non 13, 14). 

 Megatheroid Animal, Krefft, Ann. & Mag. Nat. Hist. (4) 



x. 1872, p. 180. 

 Spelaean Animal .... Thylacoleo, Owen, Foss. Remains 



Extinct Mamm. Austr. i. 1877, pp. 182-183, 



ii. pi. ix. figs. 11-12. 



