203 



rican species T. crotopezus, Licht. {T. albicollia, Spix). The under 

 surfaces of these two birds are very nearly alike — Turdus assi- 

 milis showiiig only rather a larger white patch on the neck and 

 deeper cinereous breast ; but above T. crotopezus is of a rich umber- 

 brown colouring, and the tail of a bluish-grey ; whereas iu the Mexican 

 species the whole upper surface is of a paler aud more cinereous 

 brown. I have seen examples of this bird also from Orizaba and 

 Puente Nacional in Mexico and from Guatimala. 



19. Malacocichla mexicana, Bp. Compt. Rend. t. xliii. Nov. 

 1846. 



Jalapa. 



20. Thamnophiujs melanurus, Gould, P. Z. S. 1855, p. 69. 

 pi. 83. 



Santecomapam. 



I have already recorded the appearance of this species in Chiriqui 

 (P. Z. S. 1856, p. 142); but I was not prepared to find it so far 

 north. 



21. ToDiROSTRUM ciNEREUM (Linn.), antea, p. 83. 

 Tlacotalpam, March 1856. 



22. Camptostoma imberbe, sp. nov. 



Genus novum Tyrannidarum, Tyrannulo ą^ne : rostrum altum, 

 breve, valde compressum, apice acuta et dente finali nuli a; cul- 

 mine miiltum arcuato et regulariter incurvo, gonyde paulum 

 ascendente ; vibrissis rictalibus nullis : alce modiccB, dimidium 

 caudee attingentes ; primariis secunda, tertia et ąuarta inter se 

 (Bqualib%is et quintam paulo excedentibus, sexta his paulo bre- 

 viore sed primam superante : cauda modica giiadrata : tarsi 

 breviusculi : pedes ut in genere Tyrannulo. 



C. IMBERBE, sp. nov. 



c. supra olivascenti-fuscum, pileo semicristato, cinerascenti-fusco; 

 alis fuscis, secundariarum et tectrinim margimbus externis pal- 

 lidioribus et albicantibus ; cauda pallide cinerascenti-fusco 

 unicolore : subtus cinerascenti-albidum fiavo perfusum : rostri 

 nigri mandibula inferiore basi flavicante ; ,pedibu8 nigris. 



Long. totą 3-5 ; alse 2*8 ; caudae I '3. 



Hab. In vicinitate urbis S. Andrės Tuxtla in rep. Mexicana. 



