138 MESSRS. SCLATER AND SALVIN ON BIRDS [Feb. 5, 



obtained specimens at Machala, near Guayaquil, as recorded by 

 Salvin (Ibis, 1874, p. 323). Jelski and Stoltzmann also found it at 

 Tumbez, as recorded by Taczauowski, /. *. c. ; and Prof. Steere col- 

 lected two examples — one at Pacasmayo on the coast north of 

 Truxillo, and the other at Tumbez. 



6. Cyanocorax mystacalis. 



Pica mystacalis, Geoffr. Mag. de Zool. 1835, pi. 34. 



Cyanocorax mystacalis, Scl. et Salv. Nomencl. p. 39, et P. Z. S. 

 1876, p. 272 ; Tacz. P. Z. S. 1877, p. 323. 



Cyanocorax ortoni, Lawr. Ann. Lye. N. Y. xi. p. 166. 



Of this fine species Prof. Steere obtained one example at Tumbez, 

 where MM. Jelski and Stoltzmann also procured it. Having now, 

 through Mr. Lawrence's courtesy, had the opportunity of examining 

 the type of his C. ortoni, we are able to state that our anticipation 

 as to its identity with C. mystacalis was quite correct. Prof. Orton's 

 skin is labelled as having been obtained at " Zicapa, Peru, Oct. 22, 

 1874." It may be remarked, however, that, whereas in Prof. Steere's 

 specimen the five outer pairs of rectrices are wholly white, in Prof. 

 Orton's the pair next to the middle pair have the basal half blue 

 and indications of like colour in the centres of the adjoining pairs. 

 It is probably on some such specimen as this that C. bellus of 

 Schlegel ' was established. 



7. EUSCARTHMUS ZOSTEROPS ? 



A skin of a Tyrant, obtained by Prof. Steere at Moyobamba, so 

 nearly agrees with E. zosterops, Pelzeln, Orn. Bras. p. 1 73, that we 

 are unwilling to separate it on the faith of a single specimen. But 

 it is certainly larger in its dimensions 2 , has a rather shorter bill, 

 and the edgings of the wing-coverts and secondaries are paler and 

 more distinct. 



8. Orchilus ecaudatus (Lafr. et D'Orb.). 



A skin of this species from Rioja, Peru, seems to agree well with 

 Sclater's example from San Esteban (P. Z. S. 1868, p. 631). 

 D'Orbigny's original type was from Yuracares, Bolivia. 



9. Myiarchus semirufus, sp. nov. (Plate XL) 



Supra fuscescenti-cinereus ; uropyyio et alarum caudceque mar- 

 ginibus castaneis, remigum omnium et rectricum mediarum parte 

 media n>gricante ; subtiis ochraceo-rufus unicolor ; rostro el 

 pedibus nigris : long. tota. 7"5, ala 3*4, caudce 3 - 3, tarsi TO. 



Hab. Pacasmayo, Peru (Steere). 



1 Cf. Scl. et Salv. P. Z. S. 1876, p. 272. 



Long, tota, 



3 Ex. ex Borba (Naff.) 4-0 



,, Moyobamba ( Stccrc) 5"0 



