1877.] Microscopy. TST 
Clepsysaurus veatleianus, Suchoprion cyphodon, and Paleoctonus aula- 
codus by Professor Cope. . 
William Gurley, of Danville, Illinois, has recently added some inter- 
esting species to those already known to occur in the bone bed discov- 
ered by Mr. J. C. Winslow. Such are two new species of Cricotus 
(Cope) and an allied new genus, Lysorophus Cope. A second new 
genus is said to be allied to the salamanders, and is called Diplocaulus. 
Mr. Gurley finds also a new Ctenodus, Orthacanthus, etc. 
Since his discovery of the Camarasaurus in Colorado, Mr. Lucas has 
obtained the bones of a number of other reptiles, some of them little 
inferior in proportions to the C. supremus. One of these, of herbivorous 
type, is described by Professor Cope, in the Proceedings of the American 
Philosophical Society, as Caulodon diversidens. A huge carnivorous 
species receives the name of Lelaps trihedrodon Cope, and a smaller 
type, with hollow biconcave vertebra and neural arch united by suture 
is referred to the new genus Zichosteus with the name T. lucasanus 
Cope. A species of Emydoid tortoise without dermal scuta, and with 
solid plastron and marginal bones is called Compsemys plicatulus. It is 
the oldest of the order Testudinata yet found in North America. 
GEOGRAPHY AND EXPLORATION. 
GEOGRAPHICAL News.— Among papers of interest in the forty- 
sixth volume of the Journal of the Royal Geographical Society of Lon- 
don are the following: On Mr. H. M. Stanley’s Exploration of the Vic- 
toria Nyanza, by Lt. Col. J. A. Grant. The North American Boundary 
from the Lake of the Woods to the Rocky Mountains, by Capt. S. An- 
derson. The Valley of the Tibagy, Brazil, by T. P. Bigg-Wither. 
Notes of a Journey from the River St. Francisco to the River Tocantins 
and to the City of Maranhao, by J. W. Wells. The Water-Shed of 
Central Asia, East and West, by T. E. Gordon. Notes accompanying 
a Chart of a Portion of the Niger Delta, by R. D. Boler and R. Knight. 
There are several papers, by C. M. Watson, W. Ellis, R. Strachan, and 
C. C. Gordon, on the White Nile. 
The Report of Progress of the Geological Survey of Canada for 
1875-1876 contains an. interesting Report on Explorations in British 
Columbia, by George M. Dawson, comprising observations on the phys- 
ical geography and surface geology of the Pacific coast north of Wash- 
ington Territory. s 
MICROSCOPY. 
Scuraver’s Microscorrs. — L. Schrauer, who has removed his es- 
—tablishment to No. 50 Chatham Street, New York, has just issued a new 
catalogue in which his stands are described and figured. They adhere. 
more or less to the Continental model, and aim at thorough excellence 
in working qualities, without great display. They are essentially labo- 
ratory instruments, and among the best of their kind. They are fur- 
1 Conducted by Dr. R. H. Warp, Troy, N. Y. 
