HALCYONID 2. 885 
Hatcyon, Sw. Bill long, very straight, cylindrical ; 
_. the sides widened ; the base more or less depressed. 
_.Gonys ascending. Feet syndactyle. 
Dacelo, Leach. Margin of the upper mandible consi- 
_ derably sinuated near the tip. Wings lengthened ; 
the quills slightly mucronate. Tarsus covered with 
rough scales. Australian range. 
'_-D. gigantea. White’s Voy. pl. 2. 
Halcyon, Sw. (fig. 290. d) Bill long, straight, broad, 
nearly quadrangular. Culmenslightly inclining towards 
the tip, near which the margin is slightly sinuated. 
Gape smooth. Wings broad, short, rounded. Tail very 
short. Feet syndactyle. Scales of the tarsus obsolete. 
H. cinnamomina. Z. I11.i.67. lilacina. Sonn. Voy. pl. 218. 
diops. Pl. Col. 272. atricapilla. Pl. Enl. 673. 
melanoryncha. Ib. 391. capensis. Ib. 590. 
omnicolor. Ib. 135. collaris. Z. Ill. i. pl. 27. 
Smyrnensis. P. E. 894. sanctius. Lin. Tr. xv. 206. 
ruficollis. Sw. Ib. 232. leucocephala. P. Enl. 757. 
concreta. Ib. 346.* chlorocephala. Ib. 783. f. 2. 
Syma, Lesson. Differs from Haleyon in having the 
margins of both mandibles, for two thirds of their | 
length, armed with numerous sharp and strong teeth.t 
S. Lessonia. Sw. (S. toretoro. Voy. Coq. 31. bis. 2.) 
Todiramphus, Lesson. Habit of Halcyon. Bill broad, 
and greatly depressed its whole length ; the tips round- 
ed, obtuse, and not inflexed. Gonys ascending, but 
without a ridge. Culmen obsolete. Commissure per- 
_fectly straight. Nostrils, wings, tail, and feet as in 
Halcyon ; but the scales are distinct. South Seas. 
T. sacer. Less. Mem. Soc. d’Hist. Nat. iii. pl. 11. 
_ Ceyx, Liacepede. Bill and general structure of Dacelo ; 
but the inner fore toe is wanting. 
C. tridactyla. Sonn. Voy. pl. 32. 
Aucepo, Linn. Bill very straight, compressed its whole 
length: the tip of both mandibles acute, and the 
* Add to these the species described in West. Af. Birds, vol. ii. 
¢ This type I have never seen, and am, therefore, unable to add its other 
characters, or to determine whether it enters into this circle or the next. 
} This type I have never seen. 
