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Show 1867.] MR. o. SALVIN O N T H E BIRDS O F V E R A G U A . 133 distinguish T. leucauchen from T. assimilis, Cab., as pointed out by Dr. Baird, /. c, and are even paler above than Costa Rican specimens which are referred to the former species by Baird. I am inclined to confine the term assimilis to the Mexican form, as described by Baird, and to refer all these intermediate forms to the Guatemalan T. leucauchen. The two more clearly defined species are distributed as follows:-T. assimilis is from Mexico only, T. leucauchen from the forests of Northern Vera Paz (Choctum, & c ) , and from no other district of Guatemala. The intermediate forms, viz. those with olivaceous backs and partially fulvous under wing-coverts, are found in the highlands of Guatemala (Duenas abundant, Coban a single specimen, and one from Choctum, the district of the true leucauchen), Costa Rica (Tucurriqui, 3000 feet), and Veragua. I cannot say that this arrangement is satisfactory; and had the work to be done over again I should prefer to regard all as one variable species, the representative of the South Brazilian T. crotopezus, Vieill., the Cayenne and Para T.phceopygus, Cab., and the Antillean T. jamaicensis, G m. I may here notice that the specimens in the collection of the Smithsonian Institution (22,360 and 32,684), marked "Mexico" by M . E. Verreaux, possibly came from Guatemala, and originally formed part of a collection which passed through m y hands. I have seen specimens of other species with the locality similarly marked, which certainly were in this collection. 5. TURDUS OBSOLETUS, Lawrence, Ann. of New York Lyceum, vii. p. 470; Baird, Rev. A m . B. pt. 1. p. 28. Santa Fe, Veragua. A single specimen from Santa Fe I believe to be the adult female of this species. I have little doubt that the male is black, and the species closely allied to T. atrosericeus, Lafr. R. Z. 1848, p. 3. In this female the crissum is white, while that of the female of all the allied species is coloured similarly to the abdomen. I append a short diagnosis of this specimen, as Mr. Lawrence's description was evidently taken from an immature bird:-• T. saturate brunneus, subtus pallidior: gula parce striata: ventre imo et crisso albis: tectricibus subalaribus et remigibus ad basin intus cinnamomeis : rostro nigro, pedibus obscure corylinis: long, tota 9, ala; 49, cauda; 3*8 poll. Angl, 6. RHODINOCICHLA ROSEA (Less.). Furnarius roseus, Less. Rhodinocichla rosea, Hartl. Journ. f. Orn. 1853, p. 33; Sclater, Cat. A. B.p. 147; P.Z.S. 1856, p. 140; Baird, Rev. A m . B. p. 91. Santa Fe ; David (Bridges). The proper systematic position for this curious bird seems to remain in considerable doubt. Diverse coloration of the sexes is not found in any genus of Troglodytida;, to which family both Baird and Sclater are inclined to refer it. It may prove that Dr. Hartlaub was not so far wrong after all in referring the female to the Turdidee. Though I never observed this bird in Guatemala, it ranges through- |
