244 On the Nomenclature of South-American Birds. 



often cited for this species, seem never to have been published, 

 Temminck only describes a Hirondelle verte ; and Illiger does 

 not mention his name (which was certainly bestowed upon 

 the present species in the Berlin Museum) when he esta- 

 blishes the genus Procnias (Prodr. p. 228), but only cites 

 " Hirundo viridis, Temm/' 



Therefore Procnias ccsrulea (Vieill.), Nouv. Diet, xxxiii. 

 (1819) p. 401 (Bresil et Perou), seems to be the correct 

 appellation for this bird. 



6. Thamnophilus ATRicAPiLLUs(Gmel.),auctt.plur., ought 

 to be called Th. cirrhatus (Gmel.). 



The oldest name for this species is certainly Lanius cana- 

 densis, Linn, (Syst, Nat, ed, xii. p. 134), based on Brisson, 

 Orn. ii, p. 171, tab. xviii. fig. 3 (Canada), which represents 

 clearly the female of our species. But I do not like to 

 employ this name, as it is geographically erroneous. 



The Lanius atricapillus of Gmelin (Syst. Nat. ed. xiii. 

 p. 302. sp. 32) is based mainly on Merrem, Av. Icones et 

 Descr. p. 26, Taf. viii., which is not at all the atricapillus of 

 authors, but without doubt the species now generally called 

 T. navius (Gmel.) *. 



The next name given to Th. atricapillus, auctt. (nee Gmel.), 

 is Turdus cirrhatus, Gmel. S. N. p. 826. sp. 91, based on the 

 Fourmilier huppe of Buff., Hist. Nat. Ois. p. 476, which is 



* If we are forced so strictly to follow tlie rules of the Strick- 

 landian code (to which I otherwise shall render the highest respect) even 

 where they prove to be unsatisfactory or unpractical, as a learned Pro- 

 fessor at Cambridge seems to think, we shall be driven to the unpleasing 

 necessity^ of calling the Th. ncevius (Gm.) in future Th. atricapillus 

 (Merrem), the latter name having a priority of two years. But I do not 

 at all like to transfer names from one species to another, such a practice 

 being the source of great confusion and general misunderstanding. For 

 instance, I shall never accept the practice of some English authors who 

 now call our old friend CaUwioherpe arundinacea " C. strejyera, Vieill.," 

 and C. turdoides, Meyer, " C. arundinacea (L.)," even should I be in 

 danger of being called a " franc-tireur " (cf. Ibis, 1870, p. 513), I take 

 this opportunity to express my full sympathy with what my friend 

 Mr, Seebohm has said regarding this and some other points of nomen- 

 clature in ' The Ibis ' for 1879. 



