114 
BP 
P: 
P. 
1224. 
1230. 
. 1231. 
1234. 
. 1236. 
BULLETIN 51, UNITED STATES NATIONAL MUSEUM. 
A new dinosaur, Stegosaurus marshi, from the lower cre- 
taceous of South Dakota. By Frederic A. Lueas. 
pp. 591-592, 2 pls. 
New diptera in the U. S. National Museum. By D. W. 
Coquillett. 
pp. 593-618. 
A list of the ferns and fern allies of North America north of 
Mexico, with principal synonyms and distribution. By 
William R. Maxon. 
pp. 619-651, 
A systematic arrangement of the families of the diptera. By 
D. W. Coquillett. 
pp. 653-658. 
A comparison of the osteology of the jerboas and jumping 
mice. By Marcus W. Lyon, jr. 
pp. 659-668, 3 pls. 
Cambrian brachiopoda: QObolella, subgenus Glyptias; Bicia; 
Ybolus, subgenus Westonia; with descriptions of new species. 
By Charles D. Walcott. 
pp. 669-695. 
A revision of certain species of plants of the genus Anten- 
naria. By Elias Nelson. 
pp. 697-713. 
Description of a new species of snake from Clarion Island. 
By Leonhard Stejneger. 
pp. 715-717. 
On the relationships of the Lutianoid fish, Aphareus furcatus. 
By David S. Jordan and Edwin C. Starks. 
pp. 719-723, 2 pls. 
A review of the lancelets, hagfishes, and lampreys of Japan, 
with a description of two new species. By David S. Jordan 
and John O. Snyder. 
pp. 725-734, 1 plate. 
The proper names of LGdellostoma or Heptatrema. By Theo- 
dore Gill. 
pp. 735-738. 
List of fishes collected in 1883 and 1885 by Pierre Louis 
Jouy and preserved in the-United States National Museum, 
with descriptions of six new species. By David 8. Jordan 
and John O. Snyder. 
pp. 739-769, 8 pls. 
Four new symmetrical hermit crabs (Pagurids) from the 
West India region. By James E. Benedict. 
pv. 771-778, 7 figs. : 
Synopsis of the Lucinacea and of the American species. By 
William H. Dall. 
pp. 779-833, 4 pls. 
