There seems to be no reliable published record of the color of the postorbital mark in living examples of _P. s. ornata_ from Tamaulipas. Williams (1956:147, 154) indicated that this color may be red or yellow for Mexican and Central American populations of _ornata_ in general and Günther (1885: Pl. 6 b) indicated that the color was yellow in _Emys cataspila_; however, both of the observations mentioned were presumably based on preserved rather than living specimens. The postorbital marks of a live specimen of _ornata_ (KU 40131) from southern Veracruz were yellowish to buffy with a pinkish tinge anteriorly (_fide_ notes of Robert G. Webb and a color photograph by him). [Illustration: FIG. 3. Relative height of shell (expressed as a percentage of width) and relative width of posterior plastral lobe (expressed as a percentage of plastral length) in two subspecies of _Pseudemys scripta_. The data presented are for 62 specimens (40 [Female], 22 [Male]) of _P. s. taylori_ and 37 specimens (13 [Female], 24 [Male]) of _P. s. elegans_. Horizontal and vertical lines represent the mean and range, respectively, whereas open and solid rectangles represent one standard deviation and two standard errors of the mean, respectively.] [Illustration: PLATE 9 _Pseudemys scripta taylori_ new subspecies: dorsal view of holotype (KU 46952), approximately 11/16 natural size.] [Illustration: PLATE 10 _Pseudemys scripta taylori_ new subspecies: ventral view of holotype (KU 46952), approximately 11/16 natural size.] [Illustration: PLATE 11 Paratypes of _Pseudemys scripta taylori_ new subspecies: _Left_--dorsal and ventral views of KU 46943, male, 16 km. S Cuatro Ciénegas, × 3/8; _Upper right_--KU 46974, juvenile, 6 mi. W Cuatro Ciénegas, × 5/6; _Lower right_--KU 46968, male, 16 km. S Cuatro Ciénegas, × 3/8.] [Illustration: PLATE 12 Ventral views of four subspecies of _Pseudemys scripta_: _Upper left_--_P. s. ornata_ (KU 40131 [Female]), Río Playa Vicente, San Andrés Tuxtla, Veracruz, × 1/3; _Upper right_--_P. s. gaigeae_ (IU 43583 [Female]), 1 mi. E La Cruz, Chihuahua, × 3/8; _Lower left_--_P. s. elegans_ (CNHM 55627 [Male]), Múzquiz, Coahuila, × 2/3; _Lower right_--_P. s. taylori_ new subspecies (KU 46970 juvenile), paratype, 6 mi. W Cuatro Ciénegas, Coahuila, × 11/16.]