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No. 324. % jan., Calama, 3. viii, 1907.—Wing 85; tail 38; bill 19 mm. 
“ Tris brown or blackish, feet pale grey, bill black, below grey.” 
Specimens from the Rio Madeira (Calama, Borba) and Manios (= Barra do Rio 
Negro) are rather more rufescent brown above than a series from Cayenne, British 
Guiana, and Marabitanas (upper Rio Negro), while others from the Jurudé and 
Javarri Rivers, and from Peru (Chuchurras, Hudnuco) have the upper parts paler, 
more olivaceous. The latter apparently represent G. brevicauda minor Tacz.,* 
though the differences in size do not prove to be constant. A larger series is 
required to establish the geographical races of G. brericauda, 
262, Grallaria macularia diluta n. subsp. 
[Pitta macularia Temminck, Pl. col. Genus Pitta, 2°™° section, esp. 11 (1823.—“ Brésil,” errore ! 
we substitute Cayenne).] 
Grallaria macularia berlepschi (nec Hellmayr 1993!) Snethlage, Orn. Monber, xv. p. 195 (1907.— 
Ourtm, Rio Guam4, near Para). 
G. macularia (nec Temminck) Pelzeln, /.c. p, 91 (Rio Negro below Thomar), 
No, 272. $ imm., Calama, 26, vii. 1907. “ Iris dark brown, feet plumbeous, 
bill black, below grey.”—Wing 88; tail 36; tars. 36 ; bill 19 mm. 
Similar to G. m. macularia of Cayenne and British Guiana, but wing decidedly, 
tail slightly longer; sides and flanks very much paler, dull ochreous yellow with 
an olive tinge (instead of deep ochraceous), 
Type in the Vienna Museum ; No, 16440, d ad., Rio Negro, below Thomar, 
December 6, 1830, Collected by J. Natterer.—Wing 89 ; tail 37; tars. 354; bill 
20 mm. 
Mus. Goeldi: ¢ ad., Onrém, Rio Guam, December 5, 1903. Type of G. m. 
berlepschi Snethl.—Wing 90 ; tail 37; tars. 37; bill 19 mm, 
This form had been separated by Miss Snethlage under the preoccupied name 
G. m. berlepschi., I have examined the original example from Ourém, and found it 
perfectly identical with Natterer’s bird. The female from Calama, although 
immature, shows the same differences. In a series of nine specimens of G. m. 
macularia from Cayenne and British Gaiana the wing varies from 81 to 86, the tail 
from 29 to 34 mm. ; the sides and flanks are invariably deep ochraceous. 
I suspect that the birds from Loretoyacu f and Iquitos,t North Peru, will also 
turn out to belong to G. m. diluta, unless they be referable to G. fulviventris Scl. § 
The latter species, of which I have seen two specimens, the type and another from 
Sarayacu, Eastern Keuador, in the British Museum, differs from G. m. macularia 
and G. m. diluta by lacking the ochreous yellow apical spots to the upper wing- 
coverts, and the ochreous edges to the outer primaries and the outermost bastard 
quill; the cheeks and ear-coverts are uniform slaty blackish; the tail is russet- 
brown (instead of brownish olive), the chest deep ochraceous buff like the sides 
(instead of white); furthermore, there is no orange rim round the eye nor any trace 
of the black maxillary stripe, ete. In the amount of black spotting on the breast, 
as well as in the dark slate-grey cap, it agrees with the macularia group. 
G. berlepschi Hellm.|| resembles G. fulviventris in having the chest deep 
* Proc. Zool. Soe. Lond. 1882. p. 33 (1882,—Y urimaguas, Peru), 
t Bartlett, P. ZS. Lond, 1882. p. 374: G. macularia. 
t Sclater, Cat. Birds Brit. Mus. xv. p. 324: G@, macularia. 
§ Sclater, P. Z.8, Lond, xxvi. 1858, p. 68 (1858.—Rio Napo, Eastern Ecuador). 
|| Verhandl, Zool, Bot, Gesellsch, Wien liii. p. 218 (1903,—Engenho do Gama, Mattogrosso), 
