56 TTEANNID^. 



which are divisible into several groups, most of which are represented by the five 

 species found within our boundaries. 



Of the typical form we have two species, M. sulfhureipygius, which occurs through- 

 out Central America, and M. harbatus, the prevalent southern bird, which enters our 

 fauna as far north as Costa Eica. These have wings without cross bands, dark tails, 

 and a sulphur rump. The males, too, are crested. The little M. fuhigulans has no 

 crest, the rump is coloured like the back, and the tail cinnamon : this is a bird of wide 

 range, represented in Guiana by M. erythrurus ; it reaches Costa Eica in our fauna. 

 M. ncevius not only occurs in the State of Panama, but has a wide range in South America 

 as far south as Buenos Ayres : the breast of this species is more or less streaked, and 

 the head crested. Lastly, we have M. capitalis, a rather abnormal bird of Costa Eica 

 and Nicaragua, about which we know very little. It has been transferred to Mitre- 

 pJianes by Mr. Eidgway, but is certainly more out of place there than in Myiobius. 

 The rictal bristles are not so fully developed as in the typical birds. 



M. sulphureipygius has a wide bill, the width at the rictus being about half the 

 length of the tomia. The nasal fossa is extended forwards, and the nostrils are large 

 and open at the end ; the rictal bristles extend beyond the end of the bill ; the tarsi and 

 feet are rather feeble ; the wings are much rounded, the 4th quill longest, 3rd = 5th, 

 2nd = 6th, 1st much < the rest; tail slightly emarginate, = f wing, >3 tarsus. 



1. Myiobius barbatus. 



Muscicapa barbata, Gm. Syst. Nat. i. p. 933'. 



Myiobius barbatus, Lawr. Ann. Lye. N. Y. vii. p. 328^; Salv. IbiSj 1885^, p. 295 ' ; Sol. Cat. Birds 



Brit. Mas. xiv. p. 199 \ 

 Myiobius atricaudus, Lawr. Ibis^ 1868, p. 183'; Ann. Lye. N. Y. viii. p. 8"; Scl. & Salv. P. Z. S. 



1864, p. 360 ' ; Salv. P. Z. S. 1870, p. 198 ' ; Nutting, Pr. U. S. Nat. Mus. v. p. 396 '. 



Supra obscure olivaceus ; crista verticali flava celata ; uropygio sulphureo ; tectricibus caudae superioribus et 

 Cauda ipsa nigris ; alis nigricantibus, dorsi colore extrorsum limbatis : subtus pallide flavus ; pectore et 

 hypochondriis fulvo lavatis ; subcaudalibus fuscis : rostri maxilla fusca, mandibula pallida ; pedibus 

 obscure corylinis. Long, tota 4-6, alae 2-4, caudae 2-3, tarsi 0-7, rostri a rictu 0-55. (Descr. exempl. ex 

 Panama. Mus. nostr.) 



5 mari similis, sed cristam flavam caret. 



Bob. Costa Eica, La Palma {Nutting ^) ; Panama, Calovevora {Arce ^), Lion Hill 

 (M'Leannan ^ s 6 7 j — Colombia* and Ecuador * to Amazons valley \ Guiana ^ ^ and 

 Brazil *. 



The country of the typical M. barbatus is Guiana, and on comparing specimens from 

 there and the State of Panama we find no material difference. On an average the 

 tails of birds from the latter country are rather blacker than those from Guiana, but 

 the difference is quite insignificant. 



La Palma, in Western Costa Eica, seems to be the extreme limit of the ranse of 

 this species within our country. Here Mr. Nutting met with it, but it is probably 



