122 Philippine Journal of Science 1920 
Key to the Philippine genera of the Emydinz. 
a’. A temporal arch; plastron not attached solidly to carapace. 
Cyclemys. 
a?, No temporal arch; plastron attached solidly to carapace........ Heosemys. 
Genus CYCLEMYS Bell 
Terrapene MERREM, Tent. Syst. (1820) 27; BELL, Zool. Journ. (1825) 
308, part; Firzincer, Neue Class. Rept. (1826) 6; STRAUCH, Chel. 
Stud. (1862) 25. 
Kinosternon BELL, Zool. Journ. 2 (1825) 302, part. 
Sternothzrus BELL, Zool. Journ. 2 (1825) 305, part. 
Emys WAGLER, Nat. Syst. Amph. (1830) 188, part; STRAUCH, Chel. 
Stud. (1862) 27; Mém. Acad. Sci. St.-Pétersburg 38 (1890) 14. 
Sternothezrus WAGLER, Nat. Syst. Amph. (1830) 137. - 
Cistudo Gray, Syst. Rept. (1831) 17, part; Dumérit and BIBRON, 
Erp. Gén. 2 (1834) 207; Gray, Cat. Tort. (1844) 29. 
Cyclemys BELL, Proc. Zool. Soc. London (1834) 17; Gray, Cat. Shield 
Rept. 1 (1855) 42; GUnruer, Rept. Brit. India (1864) 15; GRAY, 
Suppl. Cat. Shield Rept. 1 (1870) 22; BouLENcEr, Cat. Chel. Rhyn. 
Croc. Brit. Mus. (1889) 128; Fauna India, Rept. (1890) 28 
STEJNEGER, Bull. U. S. Nat. Mus. 58 (1907) 503; SresENRock, Sitzb. 
Ak. Wiss. Wien 112 (1903) 340; Zool. Jahrb. Suppl. 10 (1909) 500; 
Mocquarp, Rev. Colon. Rept. Indo-Chine 10 (1907) ; DE Rool, Rept. 
Indo-Aust. Arch. 1 (1915) 301. F 
Cuora Gray, Cat. Shield Rept. 1 (1855) 22; Ginruer, Rept. Brit. 
India (1864) 11; Gray, Suppl. Cat. Shield Rept. 1 (1870) 21. 
Pywidea GRAY, Proc. Zool. Soc. London (1863) 175; GUNTHER, Rept. 
Brit. India (1864) 16; Gray, Suppl. Cat. Shield Rept. (1870) 20- 
Pyziclemys Gray, Proc. Zool. Soc. London (1863) 176. 
Cystoclemmys Gray, Suppl. Cat. Shield Rept. (1870) 20. 
Notochelys GRAY, Suppl. Cat. Shield Rept. (1820) 21; GiwrHer, Rept 
Brit. India (1864) 17. 
Head normal, with smooth leathery skin, undivided into plates 
or tubercles; choanz between eyes; skull with a bony tempo 
arch and a broad postorbital arch; neural plates hexagonal; 
plastron united to carapace by a ligament, divided into two lobes, 
movable between hyoplastron and hypoplastron; alveolar sut- 
faces without median ridge; entoplastron intersected by humero- 
pectoral suture; digits webbed or nearly free; four clawed digits 
on hind foot, five on forefoot; tail short. 
The two Philippine species, Cyclemys amboinensis and C. dhor, 
are widely distributed from southern and southwestern Asia 
throughout the Malay Archipelago. Casto de Elera also lists 
Cyclemys platynota Gray, C. flavomarginatus Gray, and C. tr 
fasciata Gray. I have been unable to verify these records. 
Key to the Philippine species of Cyclemys. 
a’. Plastron not completely closing shell; posterior margin of carapace 
eerrnted 3. c. dhor Gray: 
