316 Mr. O. Salvia's Visit to the 



Empidonax atrirostris, Lawr. Proc. Ac. Phil. 1871, p. 234. 



The type of this species Mr. Lawrence also kindly allowed 

 me to take away with me for comparison. I find it identical 

 with our Sublegatus glaber (P. Z. S. 1868, p. 171). 



Margarornis guttata, Lawr. Ann. Lye. N. Y. viii. p. 128, 

 though closely allied to M. brunnescens, ScL, appears to 

 be sufficiently distinguishable by having the tail and uropy- 

 gium rufous instead of dark brown. Gray, in his ' Hand-list ' 

 (i. p. 180), gives the names of two other species of this genus 

 as '^ gutturalis, Lafr., Bolivia,'" and " certhoides, Lafr., Ar- 

 gentine Rep.^' I have searched carefully through Lafres- 

 naye's writings for the descriptions of these birds, but with- 

 out success ; nor can I find any other mention of them beyond 

 what appears in the ' Hand-list.' Another valid species of 

 this genus is M. stellata, Scl. & Salv. Nomencl. p. 67, et App. 

 p. 160, a second specimen of which I saw in the collection of 

 the Smithsonian Institution. 



Thamnophilus leucopygus, Lawr. Ann. Lye. N. Y. viii. 

 p. 401. 



On examining the type of this species in Mr. Lawrence's 

 collection, I felt convinced that an error had been made in 

 assigning the Isthmus of Panama as the origin of the skin. 

 I now find that the bird really belongs to the common African 

 species, Dryoscopus cubla (Lath.), Sharpe's Cat. Afr. Bii'ds, 

 p. 47. In some exchanges I made with McLeannan, I sent 

 him a number of African skins; doubtless this one was 

 included by mistake in a collection forwarded to Mr. Law- 

 rence from Panama, and thus misled the latter gentleman as 

 to the origin of the specimen. Thamnopliilus leucopygus 

 must therefore be removed from the list of American birds 

 altogether, and the name placed as a synonym of Dryo- 

 scopus cubla. 



Dysithamnus rufiventris, Lawr. Ann. Lye. N. Y. viii. 

 p. 131 (1865), is described from a young male of Cerco- 

 macra tyranmna,Sc\., the underparts having the immature 

 plumage still unmoultcd. 



