FORMICARINAG. 
the inner, and united at the base, the hind toe moderate ; the claws rather short, curved, and acute, that 
of the hind toe long. 
The species are found in India, Sumatra, and New Guinea. 
1. E. macroccreus Temm. PI. col, 516. I 3. E. ccerulescens Temm. PI. col. 574. 
2. E. Ajax Temm. PI. col. 573. — Type of Ajax Less. (1829). ! 4. E. diana (Less.) Belang. Voy. Ind. Or. Ois. t. 3. 
Dasycephala Swains .* 
Bill long, straight, the base wide, and the sides much compressed, with the culmen straight through 
nearly its whole length, but curved and suddenly -hooked at the tip, which is slightly emarginated; the 
gonys very long, and gradually curved upwards ; the nostrils lateral, with the opening large, somewhat 
rounded, and partly concealed by the frontal plumes and bristles. Wings moderate, with the third and 
fourth quills equal and longest. Tail moderate and rounded. Tarsi as long as the middle toe, and 
covered in front with transverse scales. Toes long and slender, with the outer toe longer than the inner, 
and united at the base ; the claws long, curved, and acute, that of the hind toe longest. 
The species of this genus are found in most parts of South America, and one species in Western Africa : those of 
the former region frequent the plains and valleys, and are often observed perched on the tops of the bushes that are 
scattered in such places. Mr. Darwin has several times seen them chasing coleopterous insects on the wing, in a 
peculiar manner, half- hopping and half-flying; when thus employed, they spread their tail to its full extent. 
1. D. cinerea (Gmel.) Briss. Ornith. Suppl. t. 9- f- 3., Spix, 
Av. Bras. t. 26. f. 2. — Tyrannus rufus VieiU. 
2. D. thamnophiloides (Spix), Av. Bras. t. 26. f. 1. 
3. D. rufiventris (VieiU.) Swains. N. Diet. d’Hist. Nat. xxxv. 
p. 93., Azara, No. 205. 
4. D .firruginea (Less ) Rev. Zool. 1889- p. 138. 
5. D. livida (Kittl.) Vog. von Chili, t. 1. — Tyrannus guttu- 
ralis Eyd. ?}' Gerv. Mag. de Zool. 1836. t. 62.; Pitangus chilensis 
Less. 
6. D. striata (Gould), Voy. of Beagle, Birds, p. 66. 
7. D. microptera (Gould), Voy. of Beagle, Birds, pi. xii. 
8. D. maritima (D’Orb. & Lafr.) — Agriornis leucura GouMt 
Voy. of Beagle, Birds, p. 57. pi. xiii. 
9. D. (?) albifrons (Gmel) Swains. PI. enl. 707. f. 1.— * >I ! ,ra 
leucops Vieill. ; Type of Pi tins VieiU. (1823). 
10. D. ? leucophrys (Tschudi), Fauna Peruana, p. LO- 
11. D. syndactyla Swains. B. of W. Afr. 1. p. 261. 
Malacopteron Eyton.\ 
Bill long and broad at the base, with the culmen rather elevated, keeled, and slightly curved towa 1 2 3 4 5 
the tip, which is suddenly curved, hooked, and slightly emarginated, the sides much compressed from th e 
middle ; the gonys long, and curved upwards ; the nostrils lateral, placed in a membranous groove, 
covered with plumes as far as the opening, which is oblique and partly exposed. Wings rather l 0ll & 
and rounded, with the first quill short, and the fourth nearly as long as the fifth and sixth, which alC 
of 
* Established by Mr. Swainson in 1831 {Fauna Boreali- Americana, p. 486.). Ayriornis of Mr. Gould (1838) and Tnmnolanias 
M. Lesson (1839) are synonymous. It probably embraces Pithys of M. Vieillot (1823). Ulyth 
f Mr. Eyton established this name in 1839 {Proc. Zool. Soc. 1839. P- 102.). Trichastoma (1842) and Alcippe (1844) of Mr. 15 > 
are synonymous. 
