us 
16, 8 Taylor: Philippine Amphibia AW § 
Staurois natator (Giinther). Plate 4, figs. 2 and 2a. 
Ixalus natator GUNTHER, Cat. Batr. Sal. Brit. Mus. (1858) 15, pl. 
4, fig. C; Proc. Zool. Soc. London (1879) 79. 
Staurois natator CoPE, Nat. Hist. Rev. (1865) 117, 
Rana natatriz BOULENGER, Cat. Batr. Sal. Brit. Mus. ed. 2 (1882) 
71; BorTTcrer, Ber. Senck. Nat. Ges. (1886) 121. 
Staurois natator BOULENGER, Ann. & Mag. Nat. Hist. VI 14 (1894) 87. 
Ixalus nubilus Mocquarp, Nouv. Arch. Mus. 2* (1890) 153, pl. 11, 
fig: 3: 
Description of species —(From No. 1601, E. H. Taylor col- 
lection; collected at Bunawan, Agusan, Mindanao, P. I., August 
12, 1912, by E. H. Taylor.) Vomerine teeth wanting; tongue 
elongate, oval, deeply notched behind; choanze large; canthus 
rostralis angular, curving in between eye and nostril; loreal 
region vertical for some distance, then sloping out, with the 
lip nearly vertical; snout narrower behind nostrils than directly 
in front; tip of snout vertical, rounding in outline; eye very 
large, equal or nearly equal to length of snout; tympanum small, 
circular, its diameter from one-third to two-fifths eye; separated 
from eye by a distance less than half its diameter; interorbital 
region narrow, a little less than width of upper eyelid; distance 
of nostrils from each other less than their distance from eye; 
nostril half as far from eye as from end of snout; skin strongly 
granular above on loreal region, above eyelids, and back of body; 
upper surface of limbs smooth; chin and breast smooth; belly 
and sides with larger granules; anal region and part of underside 
of thighs granular; no distinct supratemporal fold; no tarsal 
fold; fingers large, with wide, roughly triangular disks, diameter 
of disk larger than tympanum; first finger shorter than second, 
second shorter than fourth, fourth not reaching base of disk 
of third; fingers unwebbed; toes completely webbed, the mem- 
branes reaching base of disks; disks on toes more rounding and 
a little smaller than disks on third and fourth fingers; disks 
with distinct grooves on edges and with a transverse depression 
above; fifth toe extending slightly farther than third, fourth 
longest; a small inner metatarsal tubercle and a still smaller 
outer tubercle; subarticular tubercles small, not very clearly de- 
fined; the tibiotarsal articulation reaches much beyond snout. 
Male with internal vocal sacs. 
Color in life-——Above olive to bronzy green, mottled with 
darker ; legs lighter, barred with the ground color of back; lips, 
chin, belly, and sides light blue-green, which color penetrates 
body; tongue, inside of mouth, body cavity, and intestines light 
blue-green; interdigital membrane of toes dusky. 
169611—_5 
