6. CHRYSEMYs. sl 
Pseudemys ornata, Cope, Journ. Ac. Philad. (2) viii. p. 153 (1876). 
Emys salvini, Giinth. lc. p- 4, pls. ii, ii. 
Pseudemys salyini, Cope, Bull, U. S. Nat. Mus. no. 32, p. 22 (1887). 
Carapace moderately depressed; shields with radiating ridges in 
the young, longitudinally rugose in the adult; nuchal narrow ; 
first vertebral not or but slightly broader in front than behind, 
usually with sinuous lateral borders; second and third vertebrals 
about as long as broad in the adult, narrower than the costals. Hind 
lobe of plastron notched, its width at the utmost hardly one third 
the width of the carapace; its length about equals the width of the 
bridge ; the longest median suture is that between the abdominal 
shields, the shortest that between the humerals; axillary and 
inguinal large. Head moderate ; snout short, feebly projecting ; 
upper jaw not or but very slightly denticulated, with a small 
median notch ; lower jaw coarsely denticulated in the adult ; alyeo- 
lar surface of upper jaw broad, narrower in the middle, with feeble 
median ridge; the width of the mandible at the symphysis is a 
little less than the horizontal diameter of the orbit. Digits very 
broadly webbed. Tail short. Carapace clive or brown, each costal 
and marginal shield with a large ocellus formed by a round or 
oval blackish spot, and one or more concentric yellowish rings ; 
the centre of the ocellus situated in the postero-proximal part of 
the costal shield; vertebral shields with sinuous yellow longitu- 
dinal lines, sometimes forming an imperfect ring ; all these markings 
become indistinct in old specimens. Lower parts of shell yellowish ; 
plastron with a large symmetrical figure, formed of concentric dark 
lines, extending from the gulars to the anal; longitudinal dark 
lines across the bridge ; lower surface of marginals with blackish 
ocelli or concentric rings, the arrangement of which alternates with 
that of the shields ; these markings likewise disappearing with age. 
Head and limbs olive, with yellow or orange black-edged longitu- 
dinal streaks, of which a supratemporal is the broadest ; the bands 
on the chin mostly continuous with those on the throat, the median 
branching off into two. 
Length of shell 35 centim. 
Central America. 
a-b, Yg., spir. Mazatlan. A. ay Eisqe 7a ReAl: 
( Types.) 
Cd On Py stitd. Mazatlan. Mr. A. Forrer [C.], O. 
Salvin & F. D. God- 
man, Esqs. [ P. ]. 
ef. Yg., spir. Presidio. Mr. A. Forrer [C.], 0. 
Salvin & F. D. God- 
man, Esqs. [P. ]. 
ig.. Dy stitd. Presidio. Mat AY Horrer (O20. 
Salvin & F. D. God- 
man, Hsqs. [ P. |. 
ht. 9, stfid. Honduras. (Types of Emys venusta.) 
k. &, stffd. Mexico, 
l. g, spir. Guatemala, O. Salvin, Esq. [C. ]. 
(Type of Lmys salvini.) 
