1885.] Invertebrate Paleontology for 1884. 357 
Otto Myer, in the Proc. Acad. Nat. Sci., Philadelphia, pub- 
lished “ Notes on Tertiary shells.” In these notes he proposes 
the n. g. Tibiella, but gives no synopsis of generic characters. 
M. Neumayr, in the Neu. Jahrb. für Min., Geol. und Pal., 
Stuttgart, notes the parallel position occupied by the Laramie 
group in N, W. America, and the Intertrappean beds of the 
Degcan in Hindostan. 
E. N. S. Ringueberg, in the Proc. Acad. Nat. Sci. Philadelphia, 
has descriptions of “ New fossils from the four groups of the 
Niagara period of Western New York.” 
S. H. Scudder, in the Amer. Fourn. Sci. and Arts for Septem- 
ber, has an article on Triassic insects from the Rocky mountains. 
Mr. Scudder identifies these beds as belonging to the Triassic 
period, according to their insect fauna. Mr. Lesquereux consid- 
ers that their flora shows them to be of Permian age. In the 
Mem. Boston Soc. Nat. Hist., Vol. 11, he has an article on “ Two 
new and diverse types of Carboniferous myriapods,” and in the 
same publication he has also “The species of Mylacris, a Car- 
boniferous genus of cockroaches.” In the Proc. Amer. Acad. 
Arts and Sci. Boston, the same author has two articles, one “A 
contribution to our knowledge of Palaeozoic Arachnida ;” the 
other on “ Dictyoneura and the allied insects of the Carbonifer- 
ous epoch.” This last is a brief paper published in advance of a 
fuller memoir with detailed descriptions and full illustrations. 
J. W. Spencer, in the Bull. Museum of the University of the 
State of Missouri, publishes an article on “ Niagara fossils,” 
which will be reproduced also in the Proc. St. Louis Acad. Sci., 
Vol. 1v, No. 4. The illustrations are so bad and the species in 
some instances, ¢. g., Cyrtoceras reversum, founded apparently on 
such poor specimens that it will be very difficult if not impossible 
for future workers to recognize Mr. Spencer’s types. 
Frank Springer, in the Amer. Journ. Sci. and Arts for February, 
has an article “ On the occurrence of the Lower Burlington lime- 
stone in New Mexico. 
E. O. Ulrich, in the Journ. Cincinnati Soc. Nat. Hist., Decem- 
ber, 1883, continues his descriptions of N. American Palzozoic 
Bryozoa. 
C. D. Walcott has published his “ Palæontology of the Eureka 
district,” being Vol. vin of the monographs of the U. S. Geolog- 
ical Survey. The discussion of the development of Olenellus 
