406 Description of a Saurian found in Kansas — Cragin. 
the latter becoming obsolete at one and a half to two inches 
back of the tip of the mandible. Teeth moderately stout, coni- 
cal (mostly ovate in cross-section), gently curved, and separated 
by about their average length or about twice their average major 
diameter at emergence from socket; enamel raised into longi- 
tudinal folds which vary in width and abruptness, being often 
undeveloped on much of the outer aspect of the tooth. Either 
jaw presenting more or less decided marginal impressions for 
the reception of the teeth of the other. Spinous processes and 
pedicles of the neural arch compressed and of medium antero- 
posterior extent; the former of quite moderate hight. Hypo- 
pophyses represented on the cervical vertebrae by a ridge made 
prominent by the presence of a large vascular foramen on either 
side of it; on the dorsals by a ridge which, though constant, is 
much less pronounced. (On a supposed lumbar vertebra the 
hypopophysis is again more prominent, but on those of sacrum 
and first sacro-caudal it is nearly obsolete.) Contiguous borders 
of radius and ulna (and of tibia and fibula) each Avith an emar- 
gination. Distal of the supernumerary carpal-like bones about 
a third as large as the proximal; latter with inner border resting 
against ulnare (or fibulare) and with free border angulated. 
Proximal phalanges more or less spool-shaped, distal ones much 
jflattened, or becoming (in the first, second, and fifth digits) rud- 
imentary; phalanges of the anterior three digits of a shorter 
and broader type than those of the anterior two. Phalanges of 
the first digit 9 ( ?10) in number; those of the second digit not 
less than 15 (not more than 17); of third digit at least 17, (not 
more than 19); of fourth at least IG (not more than 19); of 
fifth probably 15 (not less than 14 and probably not more than 
17); last two phalanges of fii'st digit rudimentary, the number 
of rudimentary phalanges in the second anl fifth digits proba- 
bly somewhat variable. 
Measurements. ^eet. Inches. 
Higlit of muzzle 2.75 inches from tip 2.63 
Breadtli at same point 1.63 
Lengtli of exposed portion of shortest tooth preserved .71 
" " " longest " " l.ia 
Average length of five anterior teeth . . 1.00 
" " centra of several larger dorsal vertebme . . . . 2.81 
" " same 3 78 
" « " 3.61 
