1880. ] Geography and Travels, 143 
tional to the number usual in sabre-tooths. It agrees with Dinictis 
in this respect, and in its formula Pm. 3, M. 4, with that I assigned 
to Daptoplilus. The latter however appears to have been based 
on an immature Dznictis. The new genus may be called Pogono- 
Nearly the smallest of the Oregon sabre-tooths is probably 
undescribed. It is represented by the greater part of a skull with 
parts of all the teeth of one side. Its brain case is relatively large, 
and the sagittal crest small; the occiput is wide and vertical. Post- 
orbital process robust and prominent; mastoid and glenoid pro- 
cesses elongate. There is but one, a small premolar in front of the 
sectorial, and it has a very prominerit heel. The sectorial has a 
prominent anterior lobe, showing that the species is probably a 
true Macherodus. The tubercular is very small. The canines 
e 
then descends steeply to the orbit; sagittal crest horizontal. 
Length of cranium (axial) M. 0.120; from muzzle to orbit 
045; vertical diameter of orbit .025. Long diameter of canine 
O15; length of diastema .o11; of premolar .006 ; of sectorial .o15 ; 
width between posterior external angles of sectorials .056. The 
Species may be called Macherodus cerebralis—E. D. Cope. 
GEOGRAPHY AND TRAVELS. 
AFRICAN ExPLORATION.—The Henry Venn, a steamer belonging 
to the English Church Missionary Society, started from Lukoja, at 
the mouth of the Benué, on July 8, 1879, to ascend that stream as 
far as practicable. The Academy notices a two years’ explora- 
tion of the river Gambia, made by Mr. Frederic Speer, in the _ 
course of which he penetrated higher up the stream than any _ 
European had ever done before. Though unable to take obser- 
vations, he has taken compass bearings and laid down the upper 
course of the stream with considerable accuracy. He thinks _ 
British traders would be able without much difficulty to establish 
a valuable trade with Timbuktu and the upper Niger. A similar 
report is made from the upper Volta, which was visited recently by 
- Buss, a missionary, who met witha friendly reception at fae oF 
Herr Schütt, whose explorations in Central Africa _ 
_ Were noticed in our number for May, 1879, has returned to ~ 
Europe with large natural history collections and carefully drawn 
maps of the region traversed by him, which included a large 
tract of hitherto unknown country between the Kwango andthe 
Kassai rivers, or between about 18° and 22° E. longitude, ee oe 
of which is under the rule of the famous Mwata Yanvo TEN. 
made some important discoveries concerning the intricate hydro- 
` “Edited by Ettis H. YARNALL, Philadelphia. — —— 
