302 ANNUAL RECORD OF SCIENCE AND INDUSTRY. 



nosis in this respect. The form of the apophysis will always 

 be its characteristic. From his own investigations, he is 

 more strongly inclined to conclude that the fossil remains of 

 JEqiddie of Southern Europe are much more likely to belong 

 to the ass than to the horse, the former being more particu- 

 larly adapted to a southern habitat. He therefore thinks it 

 is well to urge upon inquirers renewed diligence in their crit- 

 icism, so as to determine more accurately the comparative 

 ranges of the two forms. 1 B^ March 23, 1873, 477. 



NUMBER OF GLYPTODONTS, OR EXTINCT GIANT ARMADILLOS. 



It i known to naturalists that Professor Burmeister has 

 been for some years collecting extensive material at Buenos 

 Ayres for his studies of the gigantic extinct mammals, repre- 

 sented in our epoch by the armadillos. He has recently pub- 

 lished a summary of the j^resent state of our knowledge in the 

 Archiv fur N^citurgeschichte (38. Jahrg., I., 250-264), and has 

 enumerated thirteen species; these form a peculiar family 

 (glyptodo7its, or Mloricata), which is distinguished from the 

 armadillos by (l) the gigantic dimensions of the body, (2) 

 the inarticulated shell, or carapace, (3) the development of a 

 breast shield, or plastron, (4) the constancy in the number 

 and form of the teeth, and (5) the great differences in the skel- 

 eton. The species are now grouped in the following manner : 



I. Some have four toes before as well as behind, those cor- 

 responding to the thumb and great toe of man being want- 

 ing. This group is confirmed by other characters, and is i'ep- 

 resented by the following species : 



1. Fcmochthiis (Burm.), with () Panochthus {Doedycura) 

 gigmiteus (Serres), {h) Panochthus tuhercidatus (Owen), and 

 P. hidlifer (B.). 



2. Hoplophorus (Lund), with (l) Hoplophorus euphractiis 

 (Lund), (2) H. elegans (B.), (3) H. p)umilio (B.), and perhaps 

 11. minor (Lund). 



H. Others have four toes before and five behind, and those 

 corresponding to the inner or thumb and great toe of man 

 are present, the one wanting on the fore-foot being the outer 

 of the other species, and corresponding to the little finger of 

 man. The species of this group are recognized, viz. : 



3. Glyptodon (Owen), with G. clamp>es (Owen), G. reticulatns 



