1880. ] the United States for the year 1879. 253 
Carboniferous forms, some of which are referred to the horizon of 
the Burlington limestone. 
‘His work on the Paleontology of Wisconsin is now ready for 
the printer and engraver, and will be issued some time during the 
year 1880. A total of one hundred and eighty-nine species are 
illustrated by twenty-six plates of figures, which fossils are 
referred to the following formations: Potsdam, Lower Magnesian, 
Trenton and Galena, Hudson River, Niagara, Guelph, Lower 
Helderberg and Hamilton. 
He recognizes Triplesia, Holopea and Bellerophon, and a second 
species of Palwacmea in the Potsdam; and also Ziiipsocephalus 
and the peculiar genus Ag/asfis, of Hall, in the same formation, 
thus adding materially to our knowledge of the fauna of the Pots- 
dam period, and to the previously known range of some of the 
genera mentioned. The Lower Magnesian epoch he finds repre- 
Sented in Wisconsin by the genera Dikellocephalus, Mlenurus, 
Metoptoma and Scevogyra, the latter being a new genus of sinis- 
tral gasteropods. He also proposes a new genus of corals, Cys- 
Zostylus, among the fossils of the Niagara group. His’ palzonto- 
logical recognition of the Guelph limestone in Wisconsin, is im- 
portant;.and he also describes new forms from that formation. 
Some of the species recognized as new among the Wisconsin col- 
lections have been described by Prof, Whitfield in the published 
annual reports of that survey, but about thirty of them are pub- 
lished in the forthcoming volumes for the first time. These works 
of Prof. Whitfield, all of which are practically finished, will be- 
come an important part of the paleontological literature of our 
country. 
The labors of Mr. S. H. Scudder in invertebrate palzontology 
are confined almost wholly to fossil insects, but he has performed 
this work so well, and prosecuted it so vigorously, that no one 
seems disposed to dispute the ground with him. He is still busily 
engaged with his great work on the Tertiary insects of North 
merica, which is now well advanced toward completion, and is to 
form Vol. xir of the quarto series of the U. S. Geological Survey. oe , 
of the Territories, lately in charge of Dr. Hayden. His me- - 
Moir on the Palaeozoic cockroaches has just issued in quarto 
form from the press of the Boston Society of Natural History, in 
which about sixty species are enumerated and figured. A memoir — 
H e same form: and from the same press, on Early Treat ee 
