236 MARSUPIALIA. 



M. 38. The greater part of the right ramus of the mandible, con- 

 taining the five cheek-teeth; from Queensland. This 

 specimen shows the prcmolar in an early stage of wear. 



Presented by 0. F. Bennett, Esq., 1880. 



M. 1519. Cast of part of the left ramus of the mandible of a small 

 individual, showing the four true molars. The original 

 was obtained from a cave in the Wellington Yalley, New 

 South Wales, and is preserved in the Australian Museum. 

 Presented by the Trustees of the Australian Museum, 1883. 



47012. Two portions of the mandibular rami of a single individual ; 

 from Queensland. The left ramus shows m7 3 and m . 4, 

 while the right ramus contains all the cheek-teeth except 

 m73. Presented by Dr. George Bennett, 1876. 



32885. The anterior extremity of the left ramus of the mandible 

 (Fiy.) of an immature individual, showing a portion of the 

 incisor, and pm . 4 in its alveolus ; from the Pleistocene of 

 the Condamine River, Queensland. Figured by Owen in 

 the ' Phil. Trans.' 1874, pi. Ixxvii. figs. 8-12, and also in 

 the ' Extinct Mammals of Australia,' pi. xc. figs. 8-12. 



Purchased, 1857. 



50052. Part of the left ramus of a mandible, apparently belonging 

 to a small individual of this species ; from Gowrie, Queens- 

 land. This specimen (which was referred by Owen to 

 P.pusio)is so slightly smaller than No. M. 1519, with 

 which it agrees in dental characters, that there appears no 

 good reason for referring it to a different species. 



Presented by G. F. Bennett, Esq., 1879. 



Procoptodon otuel (Owen '). 



Syn. Pachysiagon otuel, Owen 2 . 



Proc&ptodon pusio, Owen 3 (in parte). 



The type specimen of this species was identified by its describer 

 with P. pusio, but the structure of the teeth differs widely from the 

 type specimen of the latter, which is here referred to P. rapha. 



The species is of generally smaller size than P. rapha, from which 

 it is distinguished by the almost entire absence of enamel-folds on 

 the cheek-teeth. 



Hab. Queensland. 



1 Phil. Trans. 1874, p. 784. Pachysiagon. 2 LOG. cit. 



3 Extinct Mammals of Australia, p. 455 (1877). 



