ART. 5. A NEW FOSSIL TURTLE—GILMORE. 7 
superior lateral borders on both Han and back lobes are compara- 
tively narrow as is well shown in Figure 7 and Plate 5. 
Measurements of plastral bones and dermal scutes in millimeters. 
| Type Paratype 
No. 10463, | No. 10462, 
male. female. 
it ae i Ue REPRESS CSET EGET ED ES | if 
emo uh Ol eproasclsl DOME. «802 Sc. emer ser Semen aero) aoe ae 40 
Length of hyoplastral bone on median line..........--.--.------ | 7 15 
Length of hypoplastral bone on median line.............-.-.---- 22.5 19 
Length of xiphiplastral bone on median line...........-..------ oorn!| 41 
DERMAL SCUTES. | 
Length of sularseuteon;mediant line s+): 24k as ee rh 2) De lec as 20 
Length of humeral scute on median line..................------- apececerat 18 
Length of pectoral scute on median line. :../.............-..-.- [aectaeesi  capeten 2 
Length of abdominal scute on median line................--.-.-- | 36 32 
Length of femoral scute on median line..................-....- 18 AES 
Heneth ofanal scute on median line. =)... / 2. scc)=-Re yo dees | 20 26 
The single triangular gular scute extends posteriorly one-half the 
length of the anterior lobe, (see pl. 4), but in four specimens of KX. 
flavescens, now before me, this scute 
only extends posteriorly one-third 
the length of the anterior lobe, be- 
cause of this the humerals in the liv- 
ing species are correspondingly long 
on the median line. The paratype 
agrees with the extant species in 
having the pectorals meeting nar- 
row on the median line. Boulen- 
ger,‘ however, in his definition of the 
species flavescens distinguishes it by 
having “pectoral suture nearly as 
long as that between humerals (in 
the adult).’’ Yet no specimens avail- 
able to me in the National Museum 
2 oie Fig. 7. PLASTRON OF KINOSTERNON ARIZO~ 
collections show such a condition,  yense. No. 10462, U.S.N.M. Pararyre. 
all being short. K. flavescens also FEMALE. SUPERIOR VIEW. EPI, EPIPLAS- 
. AS ae : 5 TRAL BONE, HYO, HYOPLASTRAL BONE; HYPO, 
ainers from: thetossil-species; im lav”) ’ wrrosnasstan, Gone: sen “aha Ga oe 
ing narrow femorals and pointed tri- PERIPHERAL BONES 5 AND 6; XIPH, XIPIHI- 
= a PLASTRAL. ONE-HALF NATURAL SIZE. 
angular anals. In K. arizonense 
these scutes at the center are of nearly equai length. On the bridge 
are two transversely narrow inframarginal scutes, the anterior one 
being very much smaller than the posterior. These scutes lie 
almost wholly on phe pire bones. (See ed 5 ad DO) 
«Catan of the Chelonians, Bhghoveph alians, and Crocodiles i in the British Museum, 1889, p. 40. 
60466—23—Proc.N.M.vol.62 23 
