128 l'R(>('EEl)IX(;S OF THE NATIONAL MUSEUM. vol. xxv. 



Faniily riClD.E. 



VENILIORNIS SPILOGASTER (Wagler). 



Picus spilutjaster Wagler, Syst. Avium, 1(S27, Piciis, sp. 59, p. 33. 

 Veinliornis spilogaster Obkruolher, Proc. Acad. Nat. Sci. Phila., 1899, p. 205. 



One adult female, seemingly identical with a specimen taken at 

 Buenos Ay res. "Iris browny red." 



PICUMNUS CIRRATUS Temminck. 



Picumnas cirrdiiiK Temmisvk, PL Col., IV, 1825, pi. cccl.xxi, fig. 1. 



One specimen, apparently immature, and differing- from the adult 

 in the duller shade of back and scapulars. "Iris brown." 



Family FORMICARIID.E. 



HERPSILOCHMUS RUFIMARGINATUS (Temminck). 



Mi/ullwra riifimitrylnaUi Temmixck, PI. Col., II, 1822, pi. cxxxii, figs. 1,2. 

 IlerpaUodiiinis riif()iii(ir<j!nafiif<C.\n.\'sis, Wieguianu'n Archiv f. Naturg., 1847, Pt. 1, 

 p. 224. 



One adult male, flune 27, lUUO. "'Iris brown.'' The back of this 

 specimen has considerable admixture of black. Temminck's original 

 description of Jfyothera nifimarglnata^ and Maximilian's Myiothera 

 seapnlmns'^ represent a bird without black on the back; while 31 i/iot/i era 

 varlcgata Maximilian^ is said to differ in haying black on some of the 

 dorsal feathers. Unless this be a difference due to age or indiyidual 

 yariation — apparently an unlikely hypothesis — there are probably two 

 species now confused under the nauie JIerj)snoc/u/ius raji/ziarginatus, 

 one of which should stand as IlerpslloclimuH variegates (Maximilian). 

 Sufficient material to settle the question we haye not ayailal)le. 



DYSITHAMNUS MENTALIS (Temminck). 



Mijiilluni iijeiildlisTEyimscK, PI. Col., II, 1823, pl. clx.xi.v, fig. 3. 

 D<iKi/lli(iiniiii..'^ nirnUdix Bckmeistek, Syst. Ueber. Vug. Bras., Ill, 1857, p. 82. 



One adult male, in perfect i)lumage and entireh' typical. "Iris 

 brown." 



In a comparatiyely recent paper Dr. Allen * has united under this 

 species both TJianmoplulus olitnceus Tschudi "' and DysUIuoKnus seiiu- 

 cinei'em Sclater,'' following to ultimate end the doubt expressed by 

 Dr. Sclater regarding the distinctness of the last.' True Dydthamnus 



>P1. Col., II, 1822, pl. cxxxn, figs. 1, 2. 

 ^Beitr. Naturg. Bras., Ill, 1830, p. 1083. 

 ■'Idem, !>. 1086 (Lichtenstein manuscript). 

 *Bull. Amer. Mus. Nat. Hist, V, 1893, p. 118. 

 ■^Faun. Per., Aves, 1845-46, p. 174, pi. xi, tig. 1. 

 "Proc. Zool. Soc. Lend., 1855, y^. 90, 147, pl. xcvii. 

 'Cat. Birds. Brit. Mus., XV, 1890, p. 221. 



