622°" - MANUAL OF PHILIPPINE BIRDS. 
622. HYPOCRYPTADIUS CINNAMOMEUS Hartert. 
CINNAMON HYPOCRYPTADIUS. 
Hypocryptadius cinnamomeus me Bull. Brit. Orn. Club (1903), 14, 
13; McGrecor and WorcESTER, Hand-List (1906), 96; Grant, Ibis 
(1906), 473, pl. 18, fig. 1. 
Mindanao (Goodfellow, Mearns). 
Male.—Above bright cinnamon-rufous; wing-feathers and rectrices 
blackish brown with most of the outer webs cinnamon-rufous; inner webs 
of primaries and secondaries cinnamon; under parts buff, tinged with 
cinnamon on breast, and becoming lilac-gray on lower breast and abdomen, 
and nearly white on crissum; thighs darker. Wing, 90; tail, 54; culmen 
from base, 16; bill from nostril, 10; tarsus, 21. 
The female is similar to the male. This species is known only from 
Mount Apo, Mindanao. 
Family DICAIDZ. 
Bill short, rather broad at the base; cutting edges of both mandibles 
finely serrated for at least the distal third ; first primary usually wanting ; 
tail short and square. Birds of this family resemble the Nectariniide and 
differ from all other Passeriformes in the finely serrated tomia. The 
species are all small resident birds. Some are brightly marked with red 
or yellow, while others are plainly colored. They feed about flower or 
fruit trees or vines in the manner of the sunbirds. 
Genera. 
a*. Bill longer and more slender; width of upper mandible at base not greater, 
usually much less, than bill from nostril; tail shorter, not extending beyond 
the toes. 
b*. Bill more slender, the terminal half decidedly compressed; outline of gonys 
nearly straight; culmen from base at least twice the greatest width of 
upper mandible; short first primary wanting.................... Diceum (p. 622) 
b*. Bill stouter, and decidedly broad nearly to the tip; outline of gonys convex; 
culmen from base less than twice the width of upper mandible. 
Prionochilus (p. 637) 
a?. Bill shorter and stouter; width of upper mandible at base greater than length 
of bill from nostril; tail longer, its tip reaching beyond the toes. 
Piprisoma (p. 641) 
Genus DICAXUM Cuvier, 1817. 
The genus Diceum is distinguished by the slender and sharply pointed 
bill, by the comparatively short tail, and by always lacking the first 
primary. The shape of the bill alone is enough to distinguish Diceum 
from either Prionochilus or Piprisoma, for while the base of the bill is 
stout in all three genera, in Diceum its distal portion is much com- 
pressed, slender and sharply pointed, and the outline of the gonys is but 
very slightly convex. 
