62 FOSSIL TURTLES OF NORTH AMERICA. 
The anterior lobe of the present species is narrower and more pointed than that described 
by Lambe (Cont. Canad. Palaont., 111, 1902, p. 44, figs. 10, a, b) under the name B, antiqua. 
Baéna antiqua Lambe. 
Text-figs. 37, 38. 
Baéna antiqua, Lampe, Contrib. Canad. Palzont., 111, 1902, p. 44, figs. 10, a, b. 
The materials on which this species was based belong to the Canadian Geological Survey. 
‘They were collected in 1go1, in the Judith River beds, on Red Deer River, British America, by 
Mr. L. M. Lambe, of the Canadian Survey. The type of the species 
consists of the median region of the anterior two-thirds of the cara- 
pace. Near it was found the greater part of the anterior lobe of 
a ~ the plastron, and this is believed to belong to the same individual. 
40 73 The front of the carapace (fg. 37) was apparently broad 
ze ee and rounded. The nuchal bone is 28 mm. fore and aft; 58 
5 mm. from side to side. The neurals are irregular in form and 
outlines. The vertebral scutes are broader than long. The 
dimensions of the three present are given in the accompanying table. 
No supernumerary costal appears on each side of the first vertebral, such as is found in 
many species of the genus. 
The fragment of plastron (fig. 38) presents an entoplastron that differs from all others at 
present known in being lozenge-: shaped and broader than long. Its length is 22 mm.;_ its 
breadth, 28 mm. 
Vertebral. Length. Width. 
wwe 
Fic. 37-—Baéna antiqua. Carapace. Type. 4. Reduced from Lambe’s original drawing. c. p. 1, etc., costal 
bones; n. 1, etc., neural bones; nu. p. nuchal bone. 
Fic. 38.—Baéna antiqua. Anterior lobe of plastron. >. From drawing by Lambe. 
Fic. 39.—Baéna marshi. Plastron of type. X 7o- 
Baéna marshi Hay. 
Plate 8, fig. 2; text-fig. 39. 
Baéna marsht, Hay, Amer. Jour. Sci., XVIII, 1904, p. 261, plate xi, text-fig. 1 
The type and only known specimen of this species comes from the Laramie deposits of 
Wyoming. It was collected in 1889, by Professor J. B. Hatcher, in Converse County, between 
Buck anid Lance Creeks, and is now in the Yale University Museum. 
The specimen is considerably damaged. There are present the cast of the greater portion 
of the interior of the shell, the greater part of the central portion of the carapace and most of the 
