4 PASSERES 
1. GENUS CORYDON LESSON 
Corydon Lesson, Man. Orn. p. 177 (1828) (type of the genus C. sumatranus); Sclater, Cat. 
Birds Brit. Mus. Vol. 14, p. 466 (1888). 
Characters. The bill is enormously wide at base, measuring considerably more from 
one angle of the mouth to the other, than the length of the exposed culmen. The round nostrils 
are almost hidden by feathers, the cutting edges of the upper jaw are curved and overlapping. 
The scutes in front of the metatarsus are distinct, the back has a sharp edge. The tail is strongly 
eraduated but only about two thirds the length of the wing. The feathers of the body are hard 
and somewhat stiff. The colouration is very peculiar among the Eurylemide, as the plumage 
is dull black, the throat dull fulvous-white, narrow white bars on tail and wings and a very 
peculiar, quite concealed orange and white patch on the back. Corydon feeds on insects (large 
beetles, orthoptera, etc.) and hunts not only in daytime, but also in the twilight. The nidifi- 
cation is not yet known. 
Geographical Distribution of the Species. Only one species, inhabiting Southern 
Tenasserim, the Malay Peninsula, Sumatra and Borneo. 
1G Corydon sumatranus (Raffles). Southern Tenasserim, 
Coracias sumatranus Raffles, Trans. Linn. Soc. Lond. Vol. 13, p. 303 (1822) (Sumatra). Malay Peninsula, 
Corydon sumatranus (Raffles) cf. Sclater. Cat. Birds Brit. Mus. Vol. 14, p. 466. Sumatra, Borneo. 
2. GENUS EURYLAIMUS HorsFIELD 
Eurylaimus Horsfield, Trans. Linn. Soc. Lond. Vol. 13, p. 170 (1822) (type of the genus 
E. javanicus). Sclater, Cat. Birds Brit. Mus. Vol. 14, p. 463 (1888). 
Synonym : Platyrhynchos Vieillot, Gal. Ois. Vol. 1, p. 199 (1825). 
Characters. Bill very wide and flat, culmen strongly curved, the ridge not sharp and 
not strongly marked. The cutting edge of the upper bill bulges out near the base and overlaps 
the under bill, but not nearly as much as in Corydon. The under mandible is nearly straight. 
Nostrils round, quite free, though immediately in front of the frontal feathering. FE. javanicus 
hat two elongated, narrow feathers on the sides of the upper back. The feathers of the head 
and neck, more especially in E. javanicus, are somewhat hard and stiff. The metatarsus is 
distinctly, though not much, longer than the middle toe. The scutes in front of the metatarsus 
are fused, only the lowest one being still well defined, the upmost portion of the metatarsus 
covered with feathers. The tail is much rounded, the lateral rectrices being 1 */, to 2 */, cm. 
shorter than the middle pair, the tail is about three quarters the length of the wing. The third 
and fourth primaries are about or nearly equal and longest, the first distinctly longer than the 
secondaries. The nest is a suspended bag, hanging on branches of trees, the eggs are spotted. 
The two species are very unlike each other. 
Geographical Distribution of the Species. They range from Southern Tenasserim 
over the Malay Peninsula to Sumatra, Java and Borneo. 
1. — Much larger, head and throat vinous brown oy vinaceous grey . . . . . . . . . &E, JAVANICUS. 
2. — Much smaller, head and throat black . . . . . . .. +... =... + . FE, OCHROMELAS. 
