Mr. P. L. Sclater o7i new species of American Birds. 445 



from the Museum of Geneva, which were out of the fine collection 

 made by M. de Saussure during his recent travels in Mexico. These 

 specimens had been wrongly identified with Geothlypis trichas, from 

 which the black head of the male and want of the white band, not to 

 speak of minor differences, render it easily distinguishable. The 

 female, however, is not unlike the female of G. trichas, but of a 

 more brownish yellow below. In form this species is rather more 

 tenuirostral, and the tarsi, toes, and claws are slightly longer. The 

 third primary is slightly shorter than the fourth and fifth. 



4. Cyclorhis flavipectus. 



Olivaceo-viridis ; capite cinereo, pileo saturatiore ; fronts, loris 

 et superciliis elongatis rubris : subtus IcBte flavus, mento sum?no, 

 ventre crissoque pure albis ; rostri mandibula superiors brunnea, 

 inferiore nigro-plumbea, aplce pallescente ; pedibus pallide car- 

 neis. 



Long, tota 6*0, alse 28, caudse 2*2. 



Jiab. In ins. Trinit., Venezuela ; et rep. Nov. Grenad. 



Until I obtained examples of the true Cyclorhis guianensis from 

 Guiana and Cayenne, I mistook the present bird for that species. 

 On comparison they are quite distinct, the Cyclorhis guianensis 

 having the head pure cinereous, the yellow colour below confined to 

 the fore-neck and sides of the breast and of a different tinge, and the 

 legs lead-colour, and being besides of smaller dimensions. Of the 

 present bird I have examples from Trinidad, from Venezuela collected 

 by M. Aug. Salle between La Guayra and Caraccas, from S. Martha 

 received from M. Verreaux, and from Bogota collections. 



I now recognize at least six distinct species of this purely Neo- 

 tropical group (some of which have been sadly confounded together 

 by modern systematists), each occupying a distinct geographic area, 

 namely — 



1. guianensis, (Gm.), ex Guiana et Brazil. Bor. 



2. nigrirostrisy Lafr., ex Nov. Gren. int. 



3. flavipectus, mihi, ex Trinit. ins. Venezuela et Nov. Gren. 

 littorali. 



4. jiaviventris, Lafr., ex Guatemala et Mex. Merid. 

 .5. ochrocephala, Tsch., ex Bras. Mer. Orient. 



6. viridis, Vieill., ex Paraguaya et Boliv. 



The last two species are very different, as may be seen at a glance, 

 and yet have been always confounded together. In the Brazilian 

 species the bill is of a pale reddish horn-colour. In the Paraguay 

 and Bolivian species it is much more elevated and compressed, and 

 has a large dark lead-coloured blotch at the base. 



5. CiNCLODES BIFASCIATUS. 



Supra fulvescenti-brunneiis, superciliis elon gat is albis ; alis nigri- 

 vanti-hrunneis albo bifasciatis, tectricibus omnibus dorso con- 

 coloribus ; cauda nigra, rectricibus tribus extimis albo termi- 

 uatis : subtus gris-e^ce/ili-albus ; hypochondriis, ven're vino et 



