^o Soittlicni Cross. 



SkI'LLS. 



Ill till' Uilmliir rt'i-onl.s will I'c found the ja-incipal dimensions of 

 tin? skull.e l»rnnj,'lit Imnu- Ity the 'Southern Cross,' to which are added 

 for piiriMisos of coiiii»aiisoii siinihir details of tliose collected by the 

 ' I.'f'/irti' as well as of thesiieciinens contained in the collection of the 

 I'.ritish Museum. 'I'hc only sjiccimens, of which we know the sex 

 from examinations made in the flesh, are those collected l)y the 

 llelj^ian exiHjdition. These are therefore arranged according to 

 Ihuir sex, the males first, and each sex in order of size from largest 

 to smallest. The British Museum specimens are arranged simply in 

 onler of size, as are also those brought home by the ' Southern Cross.' 

 The numbers attached to the latter are simply those which were 

 Itlaeiil upon them in order to prevent confusion when first received. 

 Tliey have no other significance, but a knowledge of these facts will 

 probably be tif interest to the authorities of the various museums into 

 whose hands they may find their way.^ 



LlUtinguishing characteristics. — The skull of this species is well 

 known, so that a detailed description is uncalled for. Although not 

 |)o.ssessing the enormous dimensions of that of Ogmorhinus, it may 

 bo at once distinguished at all ages from that of any other species by 

 the peculiar cheek-teeth. These are both large and remarkable for 

 the eomplicated arrangement of their cusps. As in Ogmorliinus, 

 there is a principal central cusp, but this is supported, not by two 

 others, one anterior, the other posterior, but by one quite small cusp 

 in front, and by from one to tliree behind. The central cusp is far 

 lai^'er tiian the remainder, and its apex is usually bulbous ; all 

 have ft tendency to ])oint backwards. In addition to these dental 

 rharaeters, the skull of this si)ecies differs from that of Lcptonychotes, 

 whi.h it api»roximately equals in size, in its longer palate, and 

 lon^'er. bntader, anterior portion, as well as in the shape of the lower 

 jaw. This is in Lohodon far deeper, stronger, and more massively 

 built than in Lfptonijckotcs. 



>V-/-.— An attempt has been made in the "Table" of dimensions 



I" determine the sex of each specimen, both in the case of the 



Crois' and the l?ritish Museum collections, from the data 



-wi.j.i,. .. by tho.se collected by the members of the Belgian expedi- 



• Iv.nl.ilo-, all the sjwciniens collected by Mr. Hanson were fully described iu 

 iild Lave been identified, if these notes had been prupc-rly cared for 



