18/1.] ON CERTAIN SPECIES OF TYRANNID.E. 751 



8. Remarks on the Species of the Genera Myiozetetes and 

 Conopias, belonging to the family Tyrannidse. By P. L. 

 Sclater, M.A., Ph.D., F.R.S. 



[Received November 28, 1871.] 



Mr. G. N. Lawrence, of New York, having kindly sent to me for 

 examination some of the types of his newly described Tyrannidse, 

 and thus given me the opportunity of comparing them with the 

 specimens in my own collection, I have drawn up a few notes on the 

 species of two allied genera, Myiozetetes and Conopias, which may, 

 I trust, serve to assist others in the task of determining these diffi- 

 cult birds. 



First, as regards Myiozetetes *, Mr. Salvin and I, in some re- 

 marks on Myiozetetes granadensis (P. Z. S. 1867, p. 279), have 

 proposed to divide the species of this genus allied to M. cayennensis 

 as follows : — 



a. Species with a clearly defined white superciliary stripe. 



a'. Species with the primaries externally narrowly 



bordered with rufous, and with the basal half of 



the inner webs of both primaries and secondaries 



broadly margined with pale rufous 



b'. Species without rufous edgings to primaries, em- 

 bracing four local forms, which require further 

 examination 



' 2. M. texensis. 



3. M. columbianus. 



4. M. cayennensis. 



5. M. similis. 



b. Species without a white superciliary stripe 6. M. granadensis. 



1. M. guianensis. 



The examination of the specimens which I have more recently 

 met with, together with the assistance I have received from Dr. 

 Finsch's excellent remarks on this genus (P. Z. S. 1870, p. 569), 

 have induced me slightly to alter my views, and to propose to ar- 

 range the species of Myiozetetes in the following way : — 



a. Superciliis albis. 



f 1. erythropterus. 

 a' . primariis extus et intus rufo limbatis -,' 2. rufipennis. 



{ 3. cayennensis. 



h'. prim, extus rufescente intus fulvo limbatis 4. similis. 



c'. prim, extus viridi intus fulvo limbatis 5. texensis. 



) 6. granadensis. 



b. superciliis nullis ■! 7. luteireiitris. 



I 8. sulphureus. 



At the same time I must say that I am by no means satisfied as 

 to the validity of all the species of section a, as in some cases, as I 

 shall presently show, they certainly run into one another. 



1. Myiozetetes erythropterus. 



Tyrannula erythroptera, Lafr. Rev. Zool. 1853, p. 56. 



Hab. S.E. Brazil ; Minas Geraes (Rogers). 



This species I put first, as having the greatest development of red 



* As to the origin of this generic term, »ee P. Z. S. 1859, p. 46, 



Proc. Zool. Soc— 1871, No. XLVIII. 



