262 CALIFORNIA ACADEMY OF SCIENCES [Proc. 4TH Ser. 
served. The heels cross by the width of the tarsus. The ex- 
tended heel reaches the anterior border of the eye. The limb 
tubercles, web, paratoid, etc., are as in No. 30394. Measure- 
ments are: 
SMO UMEREOWATDUIS eee yee Hee oe RN UNS AE SER ESE i aR EA 41. mm. 
SHoumbitonbaser Of italiane waist tne tee Mian ouep Ge BV bess 
SHARE TIILA I AU AN Net UI eRe e KURA MRM n BAMA NN Savings 
Wirtcltaly@uke Ine eich data oo aE AUME nV NUR EMA eT 13.5% 
LEG haLabe Brac pey MANY A nIRVUNMO NR Naar eR Me Aion Aka) AA HE CILIA) Be ar 
inleeliito tip) Or mon@est tOess ee aae eee eee epi DSxianiss 
e 
There are ten vertebrae, of which the first is the atlas and 
the tenth the sacrum. The vertebrae are opisthocoelous. The 
first vertebra has no diapophyses. All the other vertebrae have 
diapophyses, those of the fiith being shortest. The extreme 
widths of the vertebrae and lengths of ventral surface of cen- 
tra are: 
1 vertebra 2.5 mm. wide, io, ong; 
TITS: 4.25 i LON eh 
3 a 4.25 i 
Ans 4.75 if 
5 cc 3.6 cc 
Or oa 4.2 “ 
7 
8 
9 
0 
Oe 
See ee 
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ry 
The sacral diapophyses increase in breadth from .7 to 1.5 
mm. 
The coccyx is subcylindrical, with a dorsal ridge. It is 
8.4 mm. long, .7 mm. in diameter near the middle, and 1 mm. 
at the ends. A pair of small diapophyses increase its breadth 
near the sacrum to 2.1 mm. 
The diapophyses of the second, third, and fourth vertebrae 
bear short ribs. The ribs attached to the third vertebra are 
longest, measuring 1.5 mm. Those on the second vertebra 
are .75 mm. long; while those of the fourth vertebra are only 
about .25 mm. in length. 
The skull is 12 mm. long, and 12 mm. wide. It articulates 
with the atlas by means of two condyles, which are about 
twice as broad as high, are borne by the exoccipital, and border 
the foramen magnum inferiorly. The fronto-parietals are 7 
mm. long, narrow, well ossified, and completely separated by a 
