APPENDIX. 
Art. LIX.—WNotice of New Jurassic Reptiles ; by Professor 
0. C. M Plate IT. 
ARSH, With Plate IIT 
Yale Museum, and some of the more interesting Dinosaurs are 
here briefly described. These pertain to several distinct groups, 
and throw considerable light on the forms already described 
from the same horizon.* 
Camptonotus dispar, gen. et sp. nov. 
The present genus is most nearly allied to Laosaurus, but 
differs in several points. The cervical vertebre are all opis- 
thoccelous, while those known in Zaosaurus are nearly plane. 
The pubis, moreover, is broad and thin in front of the acetab- 
ulum, and directed well forward. It has a deep, well marked 
articular face for the support of the femur. The ischium is 
expanded at its distal end, and has an extensive surface for 
union with its fellow. The femur is longer than the tibia. 
This genus agrees with Laosaurus in one important character, 
namely, the sacral vertebree are not codssified. That this is not 
merely a character of immaturity is shown by some of the 
other vertebrae in the type specimen, which have their neural 
arches so completely united to the centra that the suture is 
nearly or quite obliterated. To this character of the sacral ver- 
tebrae, the name of the present genus refers). With Laosaurus, 
this genus forms a distinct family, which may be called 
Laosauride. 
The teeth in Camptonotus resemble those of Laosawrus, and 
are in a single row in close-set sockets. The rami of the lower 
jaws were united in front only by cartilage. There are nine cer- 
vical vertebree, all of which bear short ribs, as in the Crocodiles. 
The dorsal vertebree have their articular faces nearly plane. 
The sacral vertebree in all the known specimens are separate, 
and their transverse processes are each supported by two centra. 
(Plate III, figure 3). The chevrons have their articular faces 
joined together. 
The fore limb is much a in size. acts - < 
digits in the manus, supported by nine carpal bones, three o: 
. ek are united +7 ae os the yaikial ets The number of 
phalanges, beginning with the first digit, was 2, 3, 3, 3,2. The 
* This Journal, vol. xvi, p. 411; and vol. xvii, pp. 85 and 181. 
