322 Mr. P. L. Sclater on the 



C. Bill thinner, more subulate ; upper man- 

 dible not nearly so much elevated : 



[bill black, spot at base of lower 



mandible rufoua (9) nigrirostris, p. 324. 



whole bill black (10) atrirostris, p. 324. 



I Avill now offer a few remarks on these ten species. 



1. Cyclorhis flaviventris^ La£r. 



On this species consult Salv. et Godm. Biol. C.-Am., Aves, 

 i. p. 211. The plumbeous bill-spot is, in some specimens, 

 almost obsolete. This form extends over South Mexico, 

 Yucatan, Guatemala, and Honduras. How far the recently 

 described C. insularis (Ridgw. Proc. Biol. Soc. Wash. iii. 

 p. 22), from the island of Cozumel, is different, it is impos- 

 sible to say in the absence of specimens. I should also be 

 disposed to question the necessity of separating C. flaviventris 

 yucatanensis, Ridgw. (Pr. U.S. N. M. 1886, p. 519). 



2. Cyclorhis flavipectus, Scl. 



Descending the Central-American peninsula southwards, 

 we find in Costa Rica and Veragua a second form of Cyclo- 

 rhis with the belly more or less of an ochraceous white. This 

 has been designated C. subflavescens ; but we agree with the 

 authors of the Biol. Centr.-Am. in considering that it cannot 

 be kept apart from C. flavipectus of Colombia, Venezuela, 

 and Trinidad. It may, perhaps, be treated as a subspecies 

 [C. flavipectus subflavescens) by those who adopt trinomials. 

 This seems also to have been Baird's view (Rev. Am. B. 

 p. 388). 



3. Cyclorhis virenticeps, Scl. 



The green crown and well-marked dark chestnut super- 

 ciliaries at once distinguish this species of Western Ecuador. 



4. Cyclorhis contrerasi, Tacz. P. Z. S. 1879, p. 224, 

 pi. xxi. 



This form of Western Peru, of which there is now a single 

 specimen in the National Collection, comes very near the 

 last, but has the dark chestnut superciliaries widened and 

 extended over nearly the whole summit of the head. 



