98 



nigricanti-cinereis : suhtus albicanti-cinerea, hypochondnis et 

 crisso brunnescentibiis, ventre medio albicantiore cinereo. 



Long. totą 6 0, alae 2-\, caudse 30. 



Hab. Brazil. 



2. Synali.axis Spixi, sp. nov. 



Parulus ruficeps, Spix, Av, Bras. i. pi. 86, p. 85 (<?.). 

 Synallaxis rtijicapilla, Reich. Handb. d. Sp. Oru. p. 158. 



Supra oUvaceo-brunnea, pileo et alis extus ritfis, cauda dorso con- 

 colore sed minus oUvascente : capitis lateribus et corpore subtus 

 cinereis : gutturis pennis intus nigris, extus argentescenti- 

 albis : ventre medio albo : lateribus et crisso brunnescente 

 tinctis. 



Long. totą 6'5, alse 2"1, caudae 3'5. 



Hab. Brazil. 



These two SynalJaxes, whicli appear to me to be very distinct 

 birds, have always hitherto been confounded together. Specimens 

 of S. Spixi are rather the most abundant iu collections, and are 

 usually marked ruficapilla or ruficeps, names both originally applied 

 to the former species. 



The S. Spixi may be distinguished by its brown tail, nearly the 

 šame colour as the back, not rufous likę the head, as is the case in 

 S. rvficapilla ; by having no traces of yellowish supercilia, the 

 whole sides of the head being uniform grey likę the breast, and by 

 its smaller and shorter bill, and longer, narrower and more pointed 

 tail-feathers. The throat-feathers are black, finely edged with silvery 

 white, which gives an appearance of a black pateh on the throat when 

 the plumage is slightly raised. In S. ruficapilla the throat and 

 breast are uniform cineraceous white, and there is more olive-brown 

 on the flanks than in the other species. 



Another bird, very closely allied to these two, is S. elegans, which 

 I have lately described in these Proceedings *, from Bogota. S. pal- 

 lida, Max., is also very similar to S. ruficapilla, but has conspicuous 

 white supercilia, and the under parts pale brown. S. albescetis, 

 Temminck, (which has been also united to iS. ruficapilla by Prince 

 Bonaparte and other writers) is likewise different, and more closely 

 resembles S. Spixi, from which, however, it is to be distinguished by 

 having only the back part of the head rufous. A sLxth nearly allied 

 species is the Bolivian S. Azarce, d'Orb. 



3. Synallaxis caniceps, sp. nov. 



S. dorso, alis caudaque cinnamomeo-rufis : capite toto cervice- . 

 que grisescentibus, pileo albescentiore : subtus lactescenti-alba : 

 rastro et pedibus pallidis : remigibus intus nigricantibus : rostro 

 elongato, parum incurvo, flavicante : pedibus pallide brunneia. 



Long. totą 5-5, alse 2*3, caudse 2'1. 



Hab. Brazil. 



Mr. Eyton was obliging enough to send me his specimens of 



* P. Z. S. 1856, p. 25. 



