428 
time was taken by the preparators before the 
work was completed. The preparation work 
was done chiefly by Mr. Otto Falkenbach. 
The animal is a new kind of duck-billed 
dinosaur, related to the Tvrachodon and 
Saurolophus of which skeletons are shown 
elsewhere in the hall, but the distinguishing 
and striking feature of this new animal is the 
skull, on account of which it is given the name 
Corythosaurus (meaning Corinthian-helmeted 
saurian). The remarkable crest on the top 
of the skull probably supported a flexible, 
ornamental membrane as seen in some 
modern lizards. The rest of the skeleton is 
in a general way like that of Trachodon and 
other members of the family of dinosaurs, 
the distinctive feature being the development 
of the pelvis and the proportion of the limbs. 
The trachodonts were a great family of 
herbivorous dinosaurs numerous in genera 
and species and represented by great numbers 
of individuals in late Upper Cretaceous times. 
The body was covered by tuberculated skin 
of distinct pattern in the different genera 
and all of these duck-billed dinosaurs seem to 
have been good swimmers, if we may judge 
THE AMERICAN MUSEUM JOURNAL 
by the vertically flattened tail characteristic 
of swimming reptiles. Probably they escaped 
from their enemies in that way, for they were 
without means of offense or defense, bearing 
neither horns nor armor plates like their 
contemporaries the ceratopsians and anky- 
losaurs. 
The limbs and feet were adapted for walk- 
ing or running, and in swimming would prob- 
ably be trailed behind or pressed closely 
against the sides. The modern iguanas of the 
Galapagos Islands swim in this way, and the 
position in which the Corythosaurus skeleton 
lies in the rock is strikingly suggestive of a 
swimming pose; although it must be remem- 
bered that when discovered the specimen lay 
flat on its side, the carcass crushed to a thin 
plate by the overwhelming weight of thou- 
sands of feet of mud and sand sediment which, 
during the millions of years since it was 
deposited, had turned into rock. The length 
of the specimen is eighteen feet, and startling 
indeed must have been the appearance of 
Corythosaurus as it rose from the water to its 
full height with helmet raised cap-a-pie like 
a knight of old. 
MUSEUM NOTES 
Since the last issue of the JournaL the 
following persons have become members of 
the Museum: 
Life Members, Mrs. E. C. Converse, PRro- 
FESSOR RaymMonpd C. OspurN and Messrs. 
B. Preston Crark, fAtrrep Harner ‘and 
Henry C. Ketsry; 
Annual Members, Mrs. Louris ANSBACHER, 
Mrs. Leo ARNSTEIN, Mrs. F. O. Ayrgs, 
Mrs. A. Battin, Mrs. JANET BURCHELL, 
Mrs. F. 8. Coonipcr, Mrs. JonatHan H. 
Crane, Mrs. J. C. DeSousa, Mrs. Roser 
FisHer, Mrs. SAMUEL FLOERSHEIMER, Mrs. 
Tuomas B. M. Gates, Mrs. James Gros- 
vENOR, Mrs. BENJAMIN GUINNESS, Mrs. 
Victor GuInzBuRG, Mrs. FREDERICK C. 
Hicks, Mrs. Aucustus Jay, Mrs. Harry 
T. Jounson, Mrs. W. N. Kernan, Mrs. 
Joun B. Mort, Mrs. Jonn W. Notes, Mrs. 
WHEELER H. PreckHamM, Mrs. CLARENCE 
Porter, Mrs. Samuret Srieret, Mrs. 
SamuEL Swirt, Misses Auice H. ANNAN, 
Mary T. BrapiEy, Guapys CROMWELL, 
MADELEINE GELSHENEN, AucGusTA Bor- 
LAND GREENE, EuizaABeETH Hanna, H. 
Maup Henry and Nina Ruoapss, Dr. T. 
PassMoRE Brrens, Dr. FENTON B. Turck, 
Dr. Atvin M. PAPpPpENHEIMER and Messrs. 
Grorce D. Artaur, WiLiraAM B. Bristow, 
W. H. CxeseproucH, Wrii1aAmM DetT#, 
Harris Fannestock, Ropert Epison Fut- 
TON, ABRAHAM L. GoLDSTONE, OapEN H. 
Hammonp, FrepERIcK W. Herz, Max 
Herzoa, M. B. Hitiecas, H. M. KAvFMANN, 
Maurice Marks, HorrmMan NICKERSON, 
J. PARMLY PARET, FREDERICK SNARE, J. E. 
STeRRETT, Ferrx A. Voqcrent, Grorce A. 
VONDERMUHLL, Louis T. Watson and 
Master Eucene DuBots. 
AT a meeting of the Executive Committee 
of the American Museum on November 17, 
Mr. B. Preston Clark was elected a life 
member in consideration of his generosity 
in bearing the expense of Mr. F. A. Watson’s 
entomological field trip to Santo Domingo 
last spring. Mr. Clark is himself an ento- 
mologist and has presented to the Museum 
numerous rare species of Sphingide. Dr. 
Raymond C. Osburn, formerly of the New 
