180 Philippine Journal of Science ~ q990 
and Nias, Natuna Islands, Banka, Malay Peninsula, Burma, 7 
Siam, Annam, and northern India. 
Genus HEOSEMYS Stejneger 
Geoemyda GRAY, Proc. Zool. Soc. London (1834) 100, part; Cat. Tort. 
(1844) 14; Cat. Shield Rept. (1855) 16; GUNTHER, Rept. Brit. 
India (1864) 18; Gray, Suppl. Cat. Shield Rept. 1 (1870) 25; AN- 
DERSON, Zool. Res. Yunnan (1879) 716; BouLENGER, Cat. Chel. Rhyn. 
Croc. Brit. Mus. (1889) 135; Fauna India, Rept. (1890) 23; 
Srraucu, Mém. Acad. Sci. St.-Pétersburg 38 (1890) 15; SIEBENROCK, 
Sitzb. Akad. Wiss. Wien 112 (1903) 340; Mocquarp, Rev. Colon. 
(1907) 11; pe Roots, Rept. Indo-Aust. Arch. 1 (1915) 298. 
Emys DUMERIL and BIBRON, Erp. Gén. 2 (1834) 232, part. 
Clemmys STRAUCH, Chel. Stud. (1862) 28, part. 
Heosemys STEJNEGER, Proc. Biol. Soc. Washington 15 (1902) 238; 
SIEBENROCK, Zool. Jahrb. Suppl. 10 (1909) 506. 
Neural plates mostly hexagonal, short-sided behind; plastron 
* extensively united to carapace by suture; entoplastron intersected 
by humeropectoral suture; skull lacking a bony temporal arch; 
anterior part of head covered with undivided smooth skin, pos- 
terior occipital and temporal regions with skin divided into scale- 
like elements; triturating surface of upper jaw rather narrow, 
without a median ridge; digits fully or partly webbed; five 
clawed digits on forefoot, four on hind foot; tail very short. 
The generic name Heosemys was made by Stejneger to include 
the three species long known under the generic name Geoemyda- 
The latter name, as shown by Stejneger, must stand for the 
species associated under the name Nicoria Gray. 
There are three well-known species belonging to the genus 
Heosemys; namely, H. spinosa Gray, widely distributed from 
Burma to the Malay Peninsula and Archipelago; H. grandis 
Gray, found in Burma, the Malay Peninsula, and French Indo- 
China; and H. depressa Anderson, known from Arrakan. 
fourth species, from Leyte, Philippine Islands, is here described. 
Key to the species of Heosemys Stejneger. 
ing lines H. spinosa Gray: 
a’. Anterior margin of carapace not serrated. 
b*. Carapace arched or tectiform in a transverse section. 
H. grandis Gray- 
b?. Carapace depressed, flat on vertebral region. 
H. depressa Anderson. 
