Cope.] a [ Dee. 21, 
Measurements. M. 
Bo tall Sera fits e fone ousue se eee aot tenets oi-feys feel ape Shomoseen. aru 
Width distally....... mite bea goss etteeateteyerst at stots alee ehoteveresers .680 
ot By UNO Ob Sa o4 cau Sooo0c 5 SSOGOCO RAS O ADE OR CORO .925 
4 Ati MESOSCAP Ula mimecrereei teeter leis iors PA OM OTST .810 
engtin Ofs Clemo Meaceln elev ee cietete ta lel ele ete teiale, © alerniel ei 400 
The articular extremity of the coracoid is recurved and very robust. 
The borders of the bone are thick and roughened. 
Measurements of Coracoid. M. 
extero=lmtemma'legt sr creaet wise ie.- -rerese alelefelevcla che .690 
Diameter antero-posterior. .....-... cece eee eee e neces .960 
VEHLTCal ap TO xm alllivaweteestetaietitet-lefole tote elalets oicler= : 
Measurements of Metapodial. M. 
Diameter proximally transverse. . seein na see tices oeeh 160 
ANTELO=POSLELION.) «| aiete)s eletarsieis/elsie) 095 
: : PPANISVETSES cidisceistscs tccie e eiste tasons 075 
iomicner ened tally ' AMTCLO=POSCEULOTS eect -leictele ai tevaeloeers 120 
Diameter distally { transverse. . ctteteccescees speyaustansienete .210 
ANTELO-POSUETION <ieeiociec' sleleielalel=lsle ales 105 
TU SMO Hives tay. t. kc rohcvole ie Siateiane she Buaialoveyoiee\eter~ o-xteceraieteinicrsere 270 
That this species was capable of and accustomed to progression on land 
is certain from the characters of the bones of the limbs and their supports 
above described. The extraordinary provision for lightening the weight 
of a portion of the skeleton has more than one significance. It must be 
borne in mind that the caudal vertebree retain the solid character seen in 
those genera which stood habitually on their hind limbs. That the pres- 
ent species was herbivorous is suggested simply by its huge dimensions, 
and the natural difficulty of supplying it with animal food. 
AMPHICCELIAS Cope. 
Paleontological Bulletin No. 27, p. 2 (Published December 10, 1877). 
The genus to which the above name is now given, is allied to Camara- 
saurus, of which, and the gigantic species (C. swpremus, I have given an 
account in my Paleontological Bulletin, No. 25. Both genera differ from 
their nearest ally Ornithopsis Seeley, in the excavation of the vertebral 
centra, so as to include large chambers separated by a septum, which com-. 
municate with the external medium by a lateral foramen. In the Ornithop- 
sis it is stated that the vertebral centra are occupied by a number of coarse 
cells. In the more remotely allied Cetiosawrus, Owen has observed that 
the tissue of the centra is coarsely spongy. 
The vertebre from all parts of the column of Camarasaurus are known, 
and those of the dorsal and lumbar regions present the extraordinary char- 
acter, of which a trace is seen in Cetiosaurus, of neural spines expanded 
transversely to the axis of the column. Numerous vetebree of Amphicw- 
lias are known, and in the dorsals in which the neural spine is preserved, 
