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, regions
408 GEOGRAPHICAL ZOOLOGY. [part IV.
Neotropical aud Oriental regions ; in the Ethiopian there is a
considerable diminution in the number of species, and in the
Paleearctic they are still less numerous, being confined to the
warmer parts of it, except one species which extends as far north
as Hungary and Prussia. The genera are :
Testudo (25 sp.), most abundant in the Ethiopian region,
but also extending over the Oriental region, into South
Europe, and the Eastern States of North America ; Fviys
(64 sp.), abundant in North America and over the whole
Oriental region, less so in the Neotropical and the Palsearctic
; Cinosternon (13 sp.). United States and California,
and Tropical America; Aromochelys (4 sp.), confined to the
Eastern States of North America ; Staurotypus (2 sp.), Guate-
mala and Mexico ; Chelydra (1 sp.), Canada to Louisiana
Claudius (1 sp.), Mexico ; Dermatemys (3 sp.). South America,
Guatemala, and Yucatan ; Terrapene (4 sp.), Maine to Mexico,
Sumatra to New Guinea, Shanghae and Formosa—a doubtfully
natural group ; Ginyxis (3 sp.), Pyxis (1 sp.), Chersina (4 sp.),
are all Ethiopian ;
—
Bumerilia (1 sp.), is from Madagascar only.
Family 58.—CHELYDID^. (10 Genera, 44 Species.)
Neotropical
Sub-regions.
General Distribution.
;