Bone} 242 [Dec. 21 
Measurements. M. 
Potal lengthy cael lssyyawsuwialnd ease vue sreeeu eee 1.517 
Width distally...... tietigaees ee Oo eee eee .680 
*S QUE TIM G is. Secs iea a ott iatodeuess drole a gran seksdales vas 825 
SS . SAU AMCSOSEAPWAs. conneien aad danse siebexad dee aa he's .810 
Length of glenoid face.......... cece Seec cere seen eeees -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. 
EXCETO<IMLETOAL: oi. cieisiintes eee ce eases ee ee .690 
Diameter | ANLETO=POSLETION: «: s:s'nsiels rei ats e854 os saree .560 
vertical proximally: soc. tsesaavanddewes sos : 
Measurements of Metapodial. M. 
Diameter proximally transverse. . Rtehnae éea43.94 omen .160 
antero-posterior. ........ eee ee 095 
Di ial GHAMSVOTSCs si fe. aie rerety o:a's0 Gioreaaieatese O75 
vamneter “medially { antero-posterior. ........0.-00-+ «+ -120 
9 
Diameter distally { transverse... eile aarg@ekes .210 
antero-posterior 2... cece ee ee ee eee -105 
Len pts cle iwciheen sas Sage aeneds meen ogneaees 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 vertebre 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. 
AMPHICGLIAS 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. supremus, 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 Cetiosaurus, 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 Amphica- 
lias are known, and in the dorsals in which the neural spine is preserved, 
