248 
REPORT OF NATIONAL MUSEUM, 1914. 
KNOWLTON, F. H.—Continued. 
MAYNARD, 
throughout, and embraces 17 
species, only one of which is 
described as new. This flora is 
compared with known Jurassic 
floras of various parts of the 
world, and the conclusion is 
reached that it is not only un- 
doubtedly Jurassic in age— 
which had previously been ques- 
tioned—but belongs either in the 
upper part of the Middle Juras- 
sic or Brown Jura, or the ex- 
treme lower part of the Upper 
Jurassic or White Jura—that 
is to say it is probably not 
older than the Bathonian, and 
certainly not younger than the 
Oxfordian. Several pages are 
devoted to a discussion of the 
geographic range of Jurassic 
floras in general, their means 
and avenues of dispersal, and 
the probable climatie conditions 
that prevailed in Alaska at the 
time this flora flourished there. 
YT. P. (See under R. §. 
Bassler.) 
OHERN, D 
ler. ) 
PETRUNKEVITCH, ALEXANDER. 
graph 
. W. (See under R. S. Bass- 
A mono- 
of the terrestrial Paleozoic 
Arachnida of North America. 
POWERS, 
Trans. Connecticut 
Acad. Arts and Sci., 
18, June, 1913, pp. 
1-137, pls. 1-13, figs. 
1-88. 
This monograph constitutes a 
revision of all known North 
American Paleozoic terrestrial 
arachnids. In addition, 24 
species and 13 genera are de- 
scribed for the first time, and 
2 new families and one new 
order are established. Valuable 
information as regards the mor- 
phology and phylogeny of the 
Arachnida is given. The paper 
is based in part on material in 
the collection of the U. S. Na- 
tional Museum, which contains 
many of the described types of 
these fossils, including 9 of the 
new species. 
Sipney. (See under Hervey 
W. Shimer.) 
SCHUCHERT, CHARLES. 
(See under R. 
S. Bassler.) 
POWERS. 
New Jersey Cretaceous. 
Hervey W., and SmnNey 
A new sponge from the 
Proc. U. &. Nat. Mus., 
46, No. 2019, Dec. 6, 
1913, pp. 155, 156, 
pl. 
Describes the new species of 
fossil sponge Ooeloptychium? 
Jerseyense from the Mount Lau- 
rel-Navesink beds of the Cre- 
taceous at Atlantic Highlands, 
New Jersey. 
SHUFELDT, R. W. Review of the fossil 
fauna of the Desert Region of Ore- 
gon, with a description of additional 
material collected there. 
Bull. Amer. Mus, Nat. 
Hist,, 32, Art... 16; 
July 9, 1913, pp. 
123-178, pls. 9-43. 
Reviews the fossil fauna of 
the Christmas Lake region of 
Oregon, with especial reference 
to the extinct birds, describing 
three new species. Discusses 
and figures a small collection of 
avian remains in the U. S. Na- 
tional Museum, 
Further studies of fossil birds 
with descriptions of new and extinct 
Bull. Amer. Mus. Nat. 
Hist., 32, Art. 16, 
Aug. 4, 19138, pp. 
285-306, pls. 51-59. 
Describes Diatryma ajar, 
Paleophasianus meleagrotdes, 
Aquila antiqua, A. ferox, A. 
lydekkert, Palwospiza hatcheri, 
and Proictinia gilmoret, all new 
species, two of which belong to 
the National Museum collection. 
Notes on many unidentified 
forms are inserted at various 
places throughout the article. 
———— Fossil feathers and some here- 
tofore undescribed fossil birds. 
Journ. Geol., 21, No. 7, 
Oct.—Nov., 1913, pp. 
628-652, figs. 1-12. 
Describes and figures all 
available fossil bird feathers. 
Two new forms, Hebe schu- 
chertit and Yalavis tenuipes are 
named. One specimen, belong- 
ing to the National Museum, is 
described and figured. 
