=Dysithamnus schistaceus= (D’ORBIGNY). F. P. and A. P. Penard (_l. c._, 1910, ii, p. 308) state that there are specimens in the Museum at Georgetown. Dawson (_l. c._, p. 26) lists it as a Colonial species.
=Automolus infuscatus= SCLATER.—Recorded by Salvin (_l. c._, 1885, p. 420, sub nom. _Automolus sclateri_), from Bartica Grove, stating that the specimens are rather smaller than those from the type locality, with faint indication of striation on the throat; and by Sclater (Cat. Birds Br. Mus. 1890, xv, p. 95, sub nom. _Automolus sclateri_) from Camacusa and Bartica Grove. _Automolus sclateri_ (Pelzeln) is a pure synonym of _Automolus infuscatus_ Sclater, having been proposed by Pelzeln (Orn. Bras., 1867, i. p. 41) on the assumption that the name _Automolus infuscatus_ was preoccupied by _Anabates infuscatus_ Bonaparte, which, however, proves to be a _nomen nudum_ (_Cf._ Hellmayr, Nov. Zool., 1905, xii, p. 279). Mr. Beebe lists both _infuscatus_ and _cervicalis_, apparently considering them two distinct species, the former only being starred as new to the Colony. Hellmayr (Nov. Zool., 1906, xiii, p. 335) says that “the specimens of _Automolus sclateri_ from British Guiana in the British Museum are absolutely identical with the type of _P. cervicalis_,” and states that the type of _P. cervicalis_ is an immature bird. He lists the Guiana form, which differs from true _infuscatus_, as _Automolus infuscatus cervicalis_ (Sclater), type locality “Camacusa and Bartica Grove.”
Apparently, then, records of _A. infuscatus_, _A. sclateri_, and _A. cervicalis_, in Br. Guiana, apply to the same bird.
=Sclerurus rufigularis= PELZELN.—Hellmayr (Nov. Zool., 1906, xiii, p. 364) mentions an immature bird from Takutu River, Br. Guiana, and says (_l. c._, p. 365) that there is a specimen in the British Museum collected by Whitely at Bartica Grove. He also says that the Br. Guiana Museum has a ♂ from Ourumee.
=Xiphorhynchus guttatoides= (LAFRESNAYE).—The form _guttatoides_ of Colombia, is a subspecies of _Xiphorhynchus guttatus_ Lichtenstein, of which the race inhabiting Br. Guiana is _X. g. sororius_ (Berlepsch and Hartert), type locality Perico, Orinoco River. Berlepsch and Hartert (Nov. Zool., 1902, ix, p. 63), who originally described this form as _Dendrornis rostripallens sororia_, mention a specimen from Quonja, Br. Guiana, coll. Whitely, agreeing with birds from Perico. Schomburgk (_l. c._, p. 690, sub nom. _Dendrocolaptes guttatus_) says he found it throughout Br. Guiana; Salvin (_l. c._, 1885, p. 422), referring to it as _Dendrornis guttatoides_, records a specimen from Bartica Grove; and Dawson (_l. c._, p. 29) lists it under the same name. Quelch (Animal Life in Br. Guiana, 1901, p. 177), speaking of _Dendrornis pardalotus_ and _Dendrornis guttatoides_, says that one or both of these species will invariably be found in collections made in the forest districts.