178 FOSSIL TURTLES OF NORTH AMERICA. 
Toxochelys bauri Wieland. 
Figs. 229-230. 
Toxochelys baurt, WreLanp, Amer. Jour. Sci., XX, 1905, p. 325, plate x, text-figs. 1-8. 
Up to the present time no better carapace of a Toxochelys has been recovered than that 
forming the basis of Wieland’s Toxochelys baurz. This specimen forms No. 2823 of the Yale 
University collection. It was found in the Niobrara deposits, near Monument Rocks, Gove 
County, Kansas. It furnishes all the neurals, and the nuchal; large portions of all the eostals 
of the right side, except the fifth; the proximal ends of all the costals of the left side; all the 
peripherals of the right side, except the fifth to the eighth inclusive; all of those of the left side, 
except the first slicer and the seventh, ninth, and eleventh. Of the plastron there is present 
a considerable part of the right hyoplastron and hypoplastron. A number of Wieland’s figures 
are here reproduced. 
As to the distinctness of this species from all that have hitherto been described there may be 
doubts, which it is too early to remove. Of two of the described species, T. brachyrhina and 
Fic. 229.—T oxochelys baurt. Carapace of the type. X45. 
C. p.1, Cc. p.2, ¢. p. 8, first, second and eighth costal plates; f, fontanels behind nuchal; n.1, 1.2, etc., the neural 
bones; nu. p, nuchal plate; per. 10, the tenth peripheral; py, pygal bone; spy. 1, spy. 2, spy. 3, the 
suprapygal bones. Or, spy. 1 may be the ninth neural; spy. 2 and spy. 3, first and second suprapygals. 
T. procax, no portions of the shell are known; and 7. baur: may be the shell of one of these. 
Of T. latiremis only small portions of the shell are known; but to judge from the figures of the 
nuchal that have been publisht, the species is distinct from 7. baur:. The latter appears pretty 
certainly to be distinct from 7. stenopora. Of the carapace of T. serrifer Cope there are known 
only two peripherals, apparently the eighth and the ninth. ‘These appear to resemble greatly 
the same peripherals of Wieland’s species. They belonged to an individual about half the 
size of the latter. The eighth of Wieland’s type hada length of 80 mm. and a width, at the 
notch, of 45 mm.; the ante a length of 75 mm. and a width of 45mm. The eighth of T. serrifer 
is 41 mm. long and 25 mm. wide; "he ad 43 mm. long and 27 mm. wide. It will be seen that 
