REPTILIA4 147 
d. South-western part, with Mexico, Lower California, to the isthmus 
of Panama. 
The tim'd kingdom comprises the South-American and Australian regions, 
and is distinguished by the prevalence of Chelydes and the total absence of 
Trionychides. 
1. The South-American region is inhabited by 35 species, 3 of which are 
Land- and 32 Freshwater Tortoises. 
2. From the continent of Australia eight species only are known, all but 
one {Manouria) being Chelydes. No Tortoise is known from New Guinea, 
Tasmania, New Zealand, &c. 
Cistudo Carolina is described and figured by Prince Max, Nov. Act. Leop. 
Carol, xxxii. p. 1, taf. 1. fig. 1. 
JEmys. The following species are described by Prince Max, 1. c. : — E. in- 
sculpta, p. 11 j E.picta, p. 12 ; E. terrapin, p. 16; E.pileata, sp. n. ?, p. 17, tab. 1. 
fig. 2 (male), tab. 2. figs. 1-4 (female) ; E. guttata, p. 22 ; E. orthonyx, sp. n., 
p. 23, tab. 2. fig. 5 and tab. 3 ; E. pseudo-gcographica, p. 31 ; E. oregoniensis, 
p. 36 ; E. elcgans, sp. n., p. 37, tab. 4. 
\Emys punctularia, Daud.] Oielopus punctularius, Mr. Cope describes this 
species, adding remarks on its affinities. Proc. Ac. Nat. Sc. Philad, 1866, 
p. 186. 
Clielonura serpentina. Some remarks by Prince Max, 1. c. p. 47. 
Eermatemys mavei. Notes on this species, by Cope, 1. c. p. 187. 
Claudius, g. n., near Clielydra, Cope, 1. c. p. 187. A single row of mar- 
ginal plates. Plastron small, cruciform, solid ; hyo- and hyposternal bones 
connate, forming an exceedingly slender bridge, which connects the plastron 
with the carapace, and is not covered by a corneous axillary plate, but by thin 
epidermis. No inguinal or gular plates ; anal united. Carapace completely 
ossified, extending much beyond plastron anteriorly and posteriorly, elevated 
and narrowed in front, neither dilated nor steeply descending behind ; verte- 
bral line nearly plane. Vertebral neural segments eight, the last pair of 
costals meeting on the median line, but separated from the small posterior 
marginal by a large penultimate shield. Anterior in contact with a very 
large anterior marginal, making together eleven vertebrals in an interrupted 
series. Clatidius angustatus, sp. n., Cope, 1. c., from Tabasco, Mexico. 
Staurotypus triporcatus. Notes on this species, by Cope, 1. c. p. 188. 
Cinosternum herendtianum, sp. n.. Cope, 1. c. p. 189 ; from Tabasco 
(Mexico). 
Batagur picta. Dr. Strauch, rejecting the genus Batagur, proposes for 
this Tortoise the name of Clemmys grayi. Vertheil. Schildkr. p. 88. 
Bternothcerus odoratus described by Prince Max, 1. c. p. 43. 
Trionyx. Three species are described by Prince Max, l.c.x — Gymnopus 
spiniferus, p. 48 ; G. muticus, p. 53 ; and G. olivaceus, sp. n. ?, p. 66, 
taf. 6. 
Tetrathyra, g. n.. Gray, Proc. Zool. Soc. 1865, p. 323, differs from the other 
African Trionychidse with covered feet in having only two pairs of sternal 
callosities. Tetrathyra haihii, sp. n., p. 324, from West Africa, probably from 
the Niger. The sternum is figured. 
L 2 
