130 COTINGIDZ. 
This Lathria is easily distinguished from all other members of the genus by its 
uniform cinnamon plumage. It was first described by Mr. Sclater from a specimen 
obtained in March 1859 by Boucard! at Playa Vicente in the State of Vera Cruz, near 
the foot of the eastern slope of the mountain-range which traverses the State of 
Oaxaca, and others from Guatemala collected by Skinner and Salvin. From Southern 
Mexico it spreads over the low-lying forest-region of British Honduras and Guate- 
mala, and ascends the mountains up to an elevation of about 2000 feet. It is absent, 
so far as we know, from the forests bordering on the Pacific, both in Mexico and Guate- 
mala, until we come to the State of Panama. In South America it is only known 
in the extreme north-west of Colombia, in the State of Antioquia, where Salmon 
obtained it at Nichi and Remedios in the Cauca valley 1°. 
L. unirufa frequents the interior of the forest, and is usually found perched among 
the lower branches of the larger trees; its food consists principally of fruit, and, 
according to Mr. C. J. Wood, of large Coleoptera which abound in the dry parts of the 
forests at Turbo and the cordillera of the Isthmus of Darien 7: 
AULIA. 
Aulia, Bonaparte, Consp. Vol. Anis. p. 4 (1854) ; Scl. Cat. Birds Brit. Mus. xiv. p. 354. 
Aulia contains two species, of which one, A. rufescens, alone is found in our country, 
and has nearly the same range as Lathria unirufa, though its northern limit does not 
extend beyond Eastern Guatemala ; the other species, A. hypopyrrha, has a wide range 
in South America, extending over the Amazons valley and South-eastern Brazil. 
In many points of structure Aulia resembles Lathria; but the outer and middle toes 
are more united at the base, the rictal bristles not so strongly developed, and the male 
has peculiarities in its plumage, described below, which are not found in the other 
allied forms. 
1. Aulia rufescens. 
Lipaugus rufescens, Scl. P. Z.S. 1857, p. 276"; 1861, p. 211°; Scl. & Salv. Ibis, 1859, p. 124°; 
P.Z. 8. 1864, p. 361*; Ex. Orn. pp. 5, 6, t. 3°; Lawr. Ann. Lyc. N. Y. vii. p. 330°; ix. 
p. 116"; Salv. P. Z. 8S. 1867, p. 149°. 
Aulia rufescens, Scl. & Salv. P. Z. 8. 1879, p. 519°; Scl. Cat. Birds Brit. Mus. xiv. p-. 355°. 
Laniocerca rufescens, Ridgw. Pr. U. 8. Nat. Mus. x. p. 589”. 
Cinnamomea, subtus pallidior ; uropygio et corpore subtus fusco transvittatis; pectore et abdomine maculis 
rotundis nigris sparsim irregulariter notatis ; hypochondriis plumarum fascicula flavarum utrinque ornatis ; 
alis nigricantibus, intus et extus cinnamomeo limbatis, tectricibus mediis et majoribus ad apicem cinna- 
momeis purpureo-nigro terminatis, subcaudalibus longissimis eodem modo ornatis: rostro corneo, pedibus 
orylinis. Long. tot. 8:5, ale 4-4, caude 3°6, rostri a rictu 1:0, tarsi 0°7. (Deser. maris ex Santa Fé, 
Panama. Mus. nostr.) 
2 mari similis, maculis abdominis nigris et alarum tectricum apicibus nigris absentibus distinguenda. 
