Revietvs — Prof. A. Gaudry — Fossik of Patagonia, 325 



the beacli and the long inflowing roll of the ocean waves. Still, the 

 mighty chorus resounds ; still, and at the same level, the rising tide 

 pauses before it recedes, and the ebb before it returns. And at this 

 same level the ebb and flood have paused, without sensible change, 

 as far back as man can penetrate into the past of his own race." 



II. — Albert Gaudry. Fossiles de Patagonie. Les Attitudes 

 DE quelques Animaux. Annales de Paleontologie, publiees 

 sous la direction de Marcellin Boule, I : pp. 1-42, 53 text- 

 figures. 1905. 

 fPHIS second part of Professor Gaudry's "Fossiles de Patagonie" 

 JL is, like the first,^ chiefly synthetical, and, accordingly, the majority 

 of the numerous figures are more or less restorations. The reader 

 who, after enjoying the author's brilliant synthesis, wishes to fully 

 appreciate his work, is referred to the originals in the Paris 

 Museum : " il sera d'ailleurs facile de verifier mes interpretations 

 snr les pieces du Museum." Doubtless it is an easy matter for those 

 who are on the spot ; unfortunately, in no other European museum 

 is there an equally rich collection of Tertiary mammals from 

 Patagonia. That is not Professor Gaudry's fault, but it is certainly 

 the merit of Monsieur Andre Tournouer, to whose untiring energy 

 and generosity the Paris Museum owes the collection in question. 



The author divides the Patagonian Ungulates into Eectigrada and 

 Flexigrada, and the latter again into Digitigrada and Plantigrada. 

 Pyrotheriura and Astrapotherium resemble the Proboscidia and 

 Amblypoda by their almost straight and massive limbs ; the 

 principal function of the bones of the foot, tightly crowded together, 

 being apparently to afford a solid basis to these articulated pillars. 

 These are the Eectigrada (Riitimeyer's term ' Saulenfiisser,' for the 

 Proboscidia, implied the same meaning). 



Ungulates with more flexible limbs, as the result of the display 

 of more activity, either made use of their limbs for locomotion alone, 

 both fore- and hind-limbs touching the ground by means of their 

 third phalanges only (Theosodon, Diadiaphoriis, Proterotherium) , or 

 the fore-limbs were modified for fossorial or prehensile functions 

 (Nesodon, Colpodon, Somalodontlierium, etc.). When they were thus 

 employed, the weight of the body had to be supported solely by 

 ■the hind-limbs resting on the whole planta. The former are the 

 Flexigrada digitigrada, the latter the Flexigrada plantigrada. 



Anterior limbs. — The anterior limbs of Pyrotherium are exceedingly 

 short as compared with their hind-limbs, so that the head must 

 have been inclined towards the ground. Astrapotherium, with 

 longer fore-limbs and not provided with a proboscis, was enabled 

 to turn its fore-limbs obliquely outwards, and thus to reach the 

 ground with its mouth after the manner of the girafi'e. The 

 anterior limbs of the North American Dinoceras present striking 

 resemblances with those of Astrapotherium. 



1 Albert Gaudry, " Fossiles de Patagonie. Dentition de quelques ilammiferes " 

 {Mem. de la Soc. geol. de France, Paleontologie, t. xii, mem. No. 317, 1904). 



