42 PATAGONIAN EXPEDITIONS: PALEONTOLOGY. 



orbital foramen is larger than in the latter and is constantly double. The 

 material is insufficient for fully determining the character of the nasals and 

 anterior nares, but it is clear that these structures are intermediate in form 

 between Diadiaphorus and Proterotherkim. The nasals are longer than 

 in the former and articulate with the premaxillse, of which the depressed 

 and rounded sheath of the tusks are shorter, and consequently, the narial 

 opening is less oblique. 



The mandible has a very stout horizontal ramus, which in some species 

 is unusually deep dorso-ventrally, increasing this diameter of the face. 



I have seen no vertebrae of this genus, except two thoracics belonging 

 to L. floweri (A. M. N. H., No. 9271), evidently the penultimate and last 

 of the region. These vertebrae resemble the lumbars of Diadiaphorus, 

 and have large, depressed centra, cylindrical, interlocking zygapophyses, 

 with prominent metapophyses, and low, broad neural spines. On the 

 penultimate vertebra the spine is erect, showing that this is the anticlinal, 

 while on the last it has a slight forward inclination. Both have short, 

 though prominent, transverse processes and even the last one articulates 

 with the tubercle of the rib. 



Bones of the limbs and feet (PI. VI, fig. 2), so far as they are known, 

 resemble those oi Diadiaphorus, but are relatively somewhat more elongate. 



LiCAPHRiUM FLOWERI Ameghino. 



■ (Plates VI, Fig. 3 ; VII, Figs. 1-4.) 



Licaphri^tm Jloweri Amtgh..; Enum. sistematica, etc., 1887, p. 20. 

 Licaphrium intermedittm Amegh.; Rev. Argent, de Hist. Nat., T. I, 1891, 



p. 297 (typographical error). 

 Licaphrium intermissmn Amtgh..; Ibid., p. 345. 

 Anisolophus FischeriM.trctv2ii; Rev. del Museo de La Plata, T. I, 1891, 



p. 465 [fide Ameghino). 

 Licaphrium granatum Amegh.; Enum. Synopt. des Mamm. Foss. de 



Patagonie, 1894, p. 41. 

 This is the typical and one of the largest, heaviest and most abundant 

 species. Most of the specimens found are of very old individuals, with 

 teeth so worn that almost all trace of the tooth-pattern has been obliterated. 

 However, one of the Ameghino series of casts, marked "co-type," shows 

 m- and - in a moderately abraded condition. According to this specimen, 

 m- has a metacone which is but little reduced in size, though quite oblique 



