NATURALIST 
A MONTHLY JOURNAL 
DEVOTED TO THE NATURAL SCIENCES 
. IN THEIR WIDEST SENSE. y 
TEn EDIT 
Prors. E. D. COPE awo J. hi Si, 
ASSOCIA ty EDITORS: 
kC O. ig thors De. C. BESSEY, THOMAS WILSON, ss 
ane C. M. WEED, Pror. W. S. BAYLEY, Pror. E, A. ANDREWS. 
Vol. XXVI. SEPTEMBER, 1892. N 
| CONTENTS. 
4 
i PAGE. 
BIFURCATED ANNELIDS. a L Botany.—Yucca Pollination. . 
} . Andrews. TD Zoology.—Trematodes—Fishes of 
RAIN CENTRES, . . . 5S. V. ma » M. D- 734 | maculatus in the Hudson River—The Foot 
CATALOGUE OF THE SNAKES OF NEBRASKA WITH Amniota—Twisting of the Umbilical C 
: NOTES ON THEIR HABITS pm DISTRIBUTION. 
Edgar Taylor. 742 
rates, ae 
SERRER —University building in Lincoln, Neb. 753 
7 J i Embryology.—Spina Bifida and the 1 
GENERAL NOTES. 
Geology and Paleontology.—Geological Survey of South 
R I dium— 
-Missouri—The Pacific Cable Sari eat Note ape ee m 
Dinosauria of the Laramie—On a New 
malia from the Laramie Formation Publications. . - - . a 
ted.)—What is Lophiodon? . . . . - T54 | PROCEEDINGS oF SCIENTIFIC SOCIETIES. . 
Minie gy and Petrography—Mt. Hekla Lip- SCIENTIFIC News. 
RECORD OF NORTH AMERICAN ZOOLOGY. 
tined) o ooon ana a‘ 
arites—Bostonite and Monchiquite from Lake Cham- 
in—The S tine of the = Central Ape 
PHILADELPHIA, U. S. A. 
BINDER & KELLY, 
