( 63 ) 



Laventille (cf. Nov. Zool. xiii. 1900. p. 29, s.n. A', r. rutilm (errore) ; Cayenne 

 (Cherrie— Mns. Tring). 



N.B. — The Venezuela and Trinidad birds agree jierfectly with the Colombian 

 ones. I have never seen any specimen from Central America. In the district of 

 Guayaquil, S.W. Ecnador, another closely allied race is found, but I have not 

 sufficient material to properly define it. 



(c) A. rutilus te/itiirostris Pelz. 

 Only known from Salto Girao, Upper Rio Madeira. 



105. Sittasomus sylviellus sylviellus (Temm.). 



Dendrocvlaptcs sylviellus Temminck, PL rul. livr. 12. tab. 72. fig. 1 (1821. — " Brp.sil "). 

 Dendrucolaptcs Erithaeus Lichtenstein, Abliawll. Akail. Berlina. d. Jahren 1820-21. pp. 2.50, 26(5. 



tab. i. fig. 2 (1822. — " in provinoia San Paulo "). 

 SlUasoiniis sylviellus Men^gaux & Hellmayr, Mem. Sac. Hist. Nat. Autun. .\i.\. 1906. p. 'J5 



(Goyaz). 



No. 1893. ? ad., Goyaz, March 1906.— Wing 71 ; tail 74; bill 12 mm. 



No. 1815. ((?)ad., Faz. Esperan^a, February 19U6.— Wing 79; tail S2 ; bill 

 \'Zh mm. 



No. 1881. c? jr., Goyaz, March 1906.— Wing 76i ; tail 70 ; bill 12i mm. 



The adult birds sent by Mons. Baer, as well as two adult males from Goyaz 

 ill the Paris Museum, collected by Castelnau and Deville, agree perfectly with 

 specimens from Rio de Janeiro, S. Paulo and Parana. The under-parts are deep 

 ochre-yellow, the pilenm is olivaceous, more or less tinged with brownish, and the 

 u])per back tawny olive. 



S. syhiclUis olimceus AVied,* of which Count Berlepsch kindly lent me a 

 specimen from Bahia, differs from 6'. s. sijlciellus by having the pileum and mantle 

 decidedly olive-green, and the nnder-surface duller as well as more olivaceous. It 

 is an easily recognisable form. 



lOoA. Sittasomus sylviellus chapadensis Ridgw. 



SiUasoiuiis chapadensis Ridgway, Proc. U.S. JJiis. .\iv. 1891, p. 509 (1892. — Chapada, Mattogrosso). 



No. 2169. ? imm., Rio Thesouras, May 1900.— Wing 68 ; tail 7(i ; bill 12 mm. 



This example is quite distinct from those obtained by Mons. Baer in the 

 vicinity of Goyaz city, and seems to belong to the pale form inhabiting Mattogrosso, 

 Eastern Bolivia and Northern Argentina. It differs, however, slightly from 

 topotypical examples of S. chapadeit.-iis in its rather more brownish (less greyish) 

 head and upper back, and smaller bill. The colour of the lower surface, on the 

 other hand, is exactly the same pale greyish buff. Until additional examples 

 prove it to represent a recognisable race, it may well be referred to chapadensis. 



Besides <S'. sylmellm amazonas Lafr., of Amazonia, there are thus three forms 

 of 6'. si/lciellus to be found in Brazil. 



(a) S. s. sijhiellus (Temm.). 



S.E. Brazil. Southern Goyaz : lUty of Goyaz (Baer, Castelnau & Deville), 

 Faz. Esperan(;ii, (Baer). Minas Geraes : Sette Lagoas (Burmeister), S. Francisco 



* Sittoionms oUvaceus Wied, Beitr. Xaturg. Brasil, 'i. ii. p. IIIG (1S31.— "iu den inneren grossen 

 Urwaldern "). 



