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Show 10 MR. P. L. SCLATER ON THE GENUS SYNALLAXIS. [Jan. 6, Of this Synallaxis I was for some time inclined to recognize two forms, a northern (S. albigularis) and a southern representative (S. albescens). Further investigation, however, has convinced m e that it is better to reunite these, and to regard the whole as belonging to one rather variable species. 7. SYNALLAXIS HYPOSPODIA, sp. nov. Fusca: pileo, nisi in fronte et alarum tectricibus extus rufis: subtus pallide cinerea, gutturis plumarum apicibus et ventre medio albis: hypochondriis et crisso fuscescentibus : cauda plumis latis, fuscis, apicem versus obscurioribus: long, tota 5'7, alee 2*2, caudce 3. Hab. in Brasil. merid. prope Bahia (Wucherer). Mus. P. L. S. et S.-G. This form is common in collections from Bahia, but cannot be referred to any described species. From S. albescens it differs in the ashy plumage below, and from S. subpudica in its shorter and broader" tail-feathers. S. pudica is nearly uniform dark cinereous below, and has more extended red on the outer wings. 8. SYNALLAXIS SUBPUDICA, sp. nov. Fusca: pileo, nisi in fronte, cum nucha, tectricibus alarum et remigi-bus extus ad basin rufis: subtus pallide cinerea, gutturis plumis basin versus nigricantibus, hypochondriis et crissofusco perfusis: cauda elongata, fusca unicolori: long, tota 6'5, alee 2*2, caudce 4*2. Hab. in Columbia int. Mus. P. L. S. et S.-G. I have two " Bogota " skins of this form ; and a third is in the collection of Salvin and Godman. I was at one time inclined to refer it to the young of S. pudica, but cannot satisfy myself that this would be correct. The distinguishing feature of the species is the long tail (measuring from 4*0 to 4*4) and the narrowness of the rectrices. The colour below is not uniform dark cinereous as in S. pudica, but more nearly resembles that of S. hypospodia, being pale cinereous, with the throat-feathers dark at their bases and silvery white at their tips, and the middle of the belly nearly white. 9. SYNALLAXIS PUDICA. Synallaxis pudica, Sclater, P. Z. S. 1859, p. 191, and 1860, pp. 88, 278, 294; Cat. A. B. p. 151; Scl. et Salv. P. Z. S. 1864, p. 354. S. brunneicaudalis, Lawr. Ann. L. N. Y. vii. p. 319. S. nigrifumosa, Lawr. Ann. L. N . Y. viii. p. 180; Salv. P. Z S 1867, p. 143. Supra fusca, pileo nisi in fronte et alis extus rufis : subtus obscure cinerea fere unicolor : long, tota 6*7, ala? 2*2, cauda 3*3. Hab. Columbia, iEquatoria, Panama et Costa Rica; Bogota (Mus. P. L. S.) ; Ecuador, Nanegal et Babahoyo (Fraser) ; Panama (M' Clellan) ; Chiriqui (Arce) ; Costarica (Carmiol). I originally established this species on a Bogota skin, from which Fraser's Ecuador specimens will hardly bear separation. The Panama and northern skins (S. nigrifumosa, Lawr.) are generally rather |