Remains of Marsupials fromx Lake Colongulac. 109 



As Mr. De Vis' report deals with twenty-eight specimens in 

 some detail I have somewhat condensed his remarks, since it 

 seems unnecessary to publish brief cataloguing descriptions of 

 known parts of known species. Mr. De Vis' remarks are enclosed 

 by quotation marks, and a few of my own in square brackets [ ]. 



" The marsupial jaws which you were so kind as to send to 

 me for examination include representatives of the following 

 species : — 



Extinct: — Sthenurus goliah, Owen; Macropus pan m. ; 

 Macropus magister m. ; Macropus sp. inc. ; Thylacinus 

 rostralis m. 



Recent : — Macropus giganteus, Shaw. 



Of these remains the most prominent in interest are those 

 of Macropus pan, inasmuch as they convey much needed 

 information as to the species, and at the same time correct an 

 error respecting it into which T had fallen. With permission 

 I will take the relics seriatim." 



Macropus pan, De Vis. 



" Maxillaries, No. 1. Consisting of the palato-maxillary 

 region, with the superposed structures of the base of an adult 

 cranium. From the latter in their present condition we learn 

 little as to any characteristic features the cranium in its entirety 

 may have possessed, further than its total breadth of 121 mm. 

 between the malars. The whole of the cheek teeth are present, 

 and, with the exception of the right premolar, are well preserved. 

 Their fucies is partly obscured by adhering matrix ; still, there is 

 no difficulty in detecting the species differentiated by their means. 

 The characteristic, more or less lobular offset from the middle of 

 the outer side of the mid-link directed outwards and curving 

 forwards, is well- in evidence in those of the molars which are 

 sufficiently exposed. The preservation of the premolar is a fortu- 

 nate enhancement of our knowledge of the dental characters of 

 the species. This is a bicuspidate tooth, having the anterior cusp 

 short, and in the form of a compressed cone ; the posterior a 

 cuneiform, sharp-edged ridge with a shallow, vertical depression 

 on the middle of its outer face ; an interoposterior cusp, in the 

 form of a triangular pyramid, is connected by a ridge from its 

 apex with the outer posterior cusp. The dimensions of the tooth 



