297 



cies, but larger than P.fulva. I have little <loul)t it is Swainson's 

 H. melanogaster, which I believe has remained unknown to naturalists 

 since the time he described it, though the name has been mixed up 

 by Audubon and Bonaparte with the Bynonynu of /'. hmifrons. 

 But as it appears ridiculous to continue the use of this name to a 

 bird with a white belly, I have substituted SwauuOM IB itfl specific 

 appellation, in conformity with the Rules for Nomenclature adopted 

 by the British Association. 



9. Petasophora thalassina (Sw.). 



10. cceligena fulgens (sw.). 



11. Delattria henrici (Less.). 



12. Delattria rhami (Less.). 



+- 13. Delattria clemenclb (Less.). 



14. Amazilius arsinoe (Less.). 



f- 15. Circe latirostris (Sw.). — Trochilus latirostris, Sw. Phil. 

 Mag. 1827, p. 441. — Ornismya tessoni, Delattre, Rev. Zool. 1839 

 p. 15? 



16. Sapphironia lucida (Shaw). 



•f 17- Selasphorus platycercus (Sw.). 



18. Selasphorus ruber (Linn.). 



+"19. Tr\phcena helois^e (Less. & Del.). 



All these Humming-birds, except Circe latirostris, Sapphironia 

 hiriila, and Selasphorus ruber, are iucluded in the list of .M. Sallys 

 collection from Cordova (see P. Z. S. 1856, p. 2H7 et seq.). 



20. Picolaptes leucogaster (Sw.), Phil. Mag. 1827, p. 440 ; 

 Lafr. Rev. Zool. 1850, p. 150. 



$ et ? similes, sed fcem. paulo minor, Parada, Oct. 1857. 



21. Certhia mexicana, Reichb. P. Z.S. 1856, p. 290. 

 <? et ¥ similes, Parada, Oct. et Dec. 1857. 



Easily distinguishable from C. ameticana, on comparison, by iti 

 darker bead, back, and wings, and dark chestnut-red rump. Long. 

 tota 50, aloe 2*5, caudte 2*5, nearly the same as C. amerieana. 



22. Salpinctes mexicanus (Sw.), P. Z. S. 1H57, p. 212. 

 $ , Oaxaca, May 1857. 



23. Troglodytes brunneicollis, sp. dot. 

 <?, Parada, Dec. 1857. 



Supra terricoiori-brunnevs eu pe rciliis et eapiti* lateribu* rufes- 

 eentibus, region* poetoculari nigricanH- br M nMe Oi uropugio sa- 

 turniiore brvnneo et hujtu phtmU quibtudtun uUut aptcem 

 versus a Mm maculatis . alts esttus, et eauda lot" hums mnguttw 



