MAMMALIA EDENTATA. 47 



Lund is to be applied to Scelidotherium. He considers it probable that the 

 teeth, upon which Lund founded his Sphenodon, may be only the younger 

 condition of those of Scelidotheriwm. 



O\ven has made some remarks upon his establishment of Mylodon, in op- 

 position to the opinion of Harlau, in Silliman's American Journal, xliv. 

 p. 341. 



Lund has also again published contributions of the highest importance 

 respecting the extinct Edentata of Brazil. (Det. K. Dauske Videusk. 

 Selsk. Naturv. Afhandl. ix, 1842, p. 137.) He divides them into the fol- 

 lowing families : 



(a) EDENTATE. Of the extinct Ant-eaters Lund now distinguishes two 

 species, the few remains of which do not differ from the corresponding bones 

 of Myrmecophaga, jubata, and tetmdactyla. 



(b) ARMADILLOS. Lund has added two new species to Dasypus, but 

 on the other hand, with respect to Chlamydotherium, he is convinced that a 

 part of the remains do not belong to this family, but to that of 



(c) The SLOTHS, and constitute a distinct genus, (Enotherium, because the 

 molars are furnished externally with a layer of cortical substance, which is 

 wanting in all the Armadillos. Lund then proceeds to discuss with great 

 ingenuity the systematic position which Megatherium and Platyony.r, which 

 is in all respects identical with Scelidotherium, should occupy, and refutes in 

 a striking manner, like Owen, Blainville's opinion, that the placing of Mega- 

 therium with the Sloths is erroneous, and on the other hand that its con- 

 nexion with the Armadillos is established. Lund, like Owen, comes to the 

 conclusion, that Cfeloclon, Megalonyx, Plafyoyx, and Megatherium, cannot be 

 placed elsewhere than with the Sloths. I have reported more at length upon 

 this in the 'Munich Transactions.' (Munch, gel. Auzeig. xvii, p. 595.) 



From these extinct forms the Reporter now returns to 

 the existing Edentata. 



Allman has discovered in the Dasypus sexcinctus, that it 

 is provided with "retia mirabilia," similar to those in the 

 Sloth, the two-toed Ant-eater, and the Lori. (Iiistit. 

 1844, p. 118.) 



Sundevall has given an excellent Monograph on the 

 genus Manis (K. V. Acad. Handl. 1842, p. 245), and has 

 distinguished the species with great profundity. 



Since I have already made use of this work as the basis of my description 

 of the genus Manis in Schreber's work, I refer for further particulars 

 respecting it to the latter. 



