592 General Notes. [ September, 
forming a series which exhibits very nicely a process of gradual 
reduction in the number of teeth —F¥ A. Ryder. 
A New Species oF Ca:topon.—Prof. Reinhardt’s contributions 
to our knowledge of the poorly known genus Ca@/odon estab- 
lished in 1839 by Dr. Lund for the reception of a Megatheroid, 
the remains of which were obtained by the latter author in the 
bone caves of Brazil, are also noteworthy. The memoir’ deals 
with the remains brought by Dr. Lund to Copenhagen, but not 
fully described and figured by him. The skull in the present 
paper is well represented, and valuable figures are given of the 
feet of Cælodon escrivanensis, based on the remains of the young 
individual found in the last cavern, la Lapa de Escrivania, which 
Dr. Lund explored in 1844, whilst the name C. maguinensis Lund, 
is retained for the species represented by teeth found in la Lapa 
nova Maquiné by that explorer in 1835. The C. eserivanensis 
was about the size of the large South American ant-eater ( Myr- 
mecophaga jubata), and in the opinion of Dr. Reinhardt was most 
nearly allied to Mylodon, and in some respects to the existing 
arboreal Cholepus. Its habits, the same authority thinks, were 
arboreal, and he looks forward with much interest to the discovery 
of an extinct type which seems to us dimly shadowed forth in 
Calodon, and which will connect the fossil Megatheroids with the 
existing species of sloths. To us there is much evidence to show 
that the histcry of these animals—their succession in time and 
their descent—will yet be as completely worked out as that of the 
horse, dog and camel.— F. A. Ryder. 
GEOGRAPHY AND TRAVELS.’ 
AFRICAN Exptoration.—Dr. Rohlfs writes from Djalo (south- 
east of the Sella or Zeila oasis), on the 8th of April last, that he 
left Sokna on the 11th of March. Up to that point the traveler 
passed over a new route, partly through a desert country, an 
also through two hitherto unknown oases, Abu-Nain and Djeb- 
bena. This region abounds in fossils of every kind, Ammonites, 
Echinidz and others. “There is probably no other district in the 
world which is equally rich in its extinct marine fauna.” Dr. 
Stocker has sent home an accurate topographical survey of the 
Djofra oases on the scale of 1: 100,000. These three oases, 
Sokna, Hon and Uadan, are bounded by ranges of hills to the 
north and south—the highest peak is Gannassa, 2000 feet above . 
‘the sea-level. Owing to the fanaticism of the natives, Dr. Rohl 
was badly received at Djalo, and has been unable to procure 4 
guide on account of the unfriendliness of the Bengasine govern- 
ment. Dr. Stécker has returned to Bengasi to try to favorably 
1 Kempedovend: n Í ; > j 0, p: 257-349: pls. 
ae Ext, Videns, ag He RAe Sais aces oe Bent Ala. xt, 3) 
Copenhagen, 1878. heme ani 
-2 Edited by ELLIS H. YARNALL, Philadelphia. 
