302 ON THE CLASSIFICATION 0: BIRDS. — 
Suara. PLYCTOLOPHIN A. Coctoos bie 
Head large, ornamented with “we | 
a folding or procumbent 
crest. Bill short, very broad ; 
the culmenremarkably curv- 
ed. Tail rounded, length- 
ened, broad ; the feathers not 
narrowed. 
Prycrotopuus, Vieil. Head 
with a folding crest. Base 
of the under mandible / 
(fig. 272. b) frequently (1% 
concealed by feathers, \ 
which then makes it 
appear higher than it is : 
long (a a). Wings long ; secondaries, tertials, and 
sometimes the tail feathers, mucronate. India, Aus-— 
tralia. Subtypical. . 
-P. erythropterus. Lear. pl.5. Cookii. Kuhl. pl. 3. 
galeritus. Ib. 3. _ Banksii. White’s Voy. 
sulphureus. Ib. 4. Solandri. Lin. Tr. xiii. 113. 
galeatus. Lath.G.H.pl.28. — funeralis. Shaw. N. M. 186. 
rosaceus. Lear. pl. 2. ? Baudinii. Lear. pl. 6. 
Licmetis, Wagler. General structure of Plyctolophus, 
with the bill of Leptorynchus.* The tenuirostral 
type. 4 
| L. tenuirostris. Kuhl. Pl. Col. : 
Microctossus, Geoffroy St. Hilaire. Cheeks. naked. 
Head large. Crest of narrow procumbent feathers. 
Bill very large ; the upper mandible enormous, doubly 
sinuated, and prolonged into an acute hook; the 
lower very short, but of great depth: the culmen 
almost perpendicular. Tailshort,even. ‘Tongue re- 
tractile, small, cylindrical, terminated by a thickened 
gland. India. Typical. — 
M. aterrimus. Le Vail. pl. 12,13. | griseus. Le Vail. pl. 11a 
* Not having a specimen of this bird before me, I merely indicate the ; 
typical characters. . 
~ 
