282 Zoological Society : — 



diSy albis terminatis : dorsi plumis taxis, elongatisy basi albis : 

 rectricibus apice albis. 

 Long, tota 4*5, alae 2'1. 



30. Pyriglena rufiventris (Cornalia). 

 Thamnophilus rufiventris^ Corn. Vert. Syn. p. 12. 



P. atra, abdomine Icete castaneo : alarum tectricibus maculis ro- 

 tundis, albis terminatis : dorsi plumis taxis , elongatis, basi albis: 

 rectricibus graduatisy harum extimis apice albis; rostro pedi- 

 busque nigris. 

 Long, tota 4*5, alee 2-1, caudse 2*0. 



I have little doubt that I have correctly referred these two birds 

 to the species described by Dr. Cornalia, the types of which I had 

 an opportunity of examining through his kindness when last at 

 Milan. Although they closely resemble one another, except in the 

 colouring of the belly, there is so much difference in the form of the 

 bill in the two specimens in this collection, that I think it hardly pos- 

 sible that, as suggested by Dr. Cornalia, the variations between them 

 can be due to age or sex, and I believe them distinct, though nearly 

 allied species. I have placed them in the genus Pyriglena, with the 

 type of which, P. domicella, they agree in several respects ; particu- 

 larly in the lax and elongated feathering of the lower back — a curious 

 structure occurring in several groups of birds, Pycnonotus, Philen- 

 toma, &c., and which has not yet, as far as I am aware, been fully 

 explained. In this same genus I should also place that peculiar form, 

 the Myiothera nudiceps of Cassin (Proc. Ac. Sc. Phil. 1850, p. 106), 

 Pyriglena nudiceps, mihi, of which Mr. Gould has a specimen from 

 Panama, and the MM. Verreaux have lately received examples from 

 Santa Martha in New Grenada, 



There are several other birds of this family in the collection that I 

 cannot make out. A modern monograph of the group would be a 

 great addition to our knowledge of South American ornithology. 



31. Conopophaga aurita (Linn.) (PI. Enl. 822). 

 Agrees with Cayenne specimens. 



Tyrannin^. 



32. Pyrocephalus rubineus (Bodd.), PI. Enl. 675. fig. 1. 



33. Todirostrum ?, . 



34. Tyrannula phcenicura, Sclater, sp. nov. 



T. flavo-olivacea : dorso imo et ventre flavissimis : capite nigro- 

 cinerascente, crista media flava utrinque nigra : f rente lorisque 

 albis : gula cinerea : alis nigricantibus, tectricibus majoribus et 

 secondariis rufescente limbatis : cauda unicolore dare rufa. 

 Long, tota 4*0, alse 2*5, caudse 1*7. 



Obs. — SimiHs T. ornatce, Lafr. Rev. et Mag. de Zool. 1853, 

 p. 57, sed Cauda clare rufa et secondariis rufescente marginatis sane 

 di versa. 



35. Elania cayennensis (Linn.). 



