438 
Mr. P. L. Sclater on the Genus Grallaria. 
tions have been made since the publication of my “ Synopsis 
of the American Ant-birds” in 1858*. 
The genus Grallaria f—one of the best-marked forms 
amongst the Formicariidse, and offering many points of ex¬ 
ternal resemblance to the Pittce of the Old-World tropics— 
may be conveniently divided into four sections, as follows :— 
a. Squamigeree , containing the two species G. squamigera 
and G. gigantea, which are easily distinguishable from the 
rest of their congeners by their large size and strong thick 
bill. 
b. Reges, containing the seven representative forms of the 
G. rex sive varia, some of which are well defined, while others 
scarcely deserve specific separation. These I take geogra¬ 
phically from north to south. 
c. Uniformes , those with the plumage generally of a uni¬ 
form character, without flammulations upon the breast and 
belly. This group consists exclusively of high-ranging Andean 
species. 
d. Flammulatae, containing the remaining nine species, 
all of which have the under surface more or less flammulated, 
and lead us on to the group of diminutive species which I 
have separated under the name Gr attar icula%. 
The genus Grattaria therefore, as thus arranged, contains 
twenty-seven species known to me. The diagnoses added under 
each head are taken from examples in my own collection and 
that of Messrs. Salvin and Godman, in which are to be found 
* 11 Synopsis of the American Ant-birds/’ pts. i., ii., iii., P. Z. S. 1858, 
pp. 202, 232, 272. See also supplement, P. Z. S. 1868, p. 571. 
t The genus Grallaria was founded by Vieillot in 1816, on Buffon’s 
u Roi des Fourmilliers ” (= G. varia). According to my views it is equi¬ 
valent to, or should comprehend the following generic terms:— 
Myioturdus, Boie, Isis, 1826, p. 972. Type G. varia. 
Myiotrichas, Boie, Isis, 1831, p. 542 — Myioturdus. 
Coiobathris, Gloger, Hand. u. Hilfsb. d. Nat. p. 304 (1842). Type G. 
varia. 
Codonistris , Gloger, Hand. u. Hilfsb. d. Nat. p. 303 (1842). Type G. 
hrevicauda. 
Hypsibemon, Cabanis, Wiegm. Arcliiv. 1847, pt. i., p. 217. Type G. 
ruficapilla. 
1 P. Z. S. 1858, p. 283. 
