CAMPYLORHYNCHUS. 



103 



light stripe, however, wider and whiter. The under parts are very 

 similar. The bands on the tail are not so decidedly transverse, but an 

 edging of brown along the shafts often divides the light bar. In the 

 other species it is the concealed centres of the hood feathers that are 

 brown (showing only occasionally), with yellowish-gray edges. The 

 nape is much less conspicuously streaked. C. megalopterus is con- 

 siderably larger also, measuring 8.50 inches, the wing 3. TO, tail 3.90. 

 This may be a Mexican bird, as stated by Lafresnaye, but more 

 probably it is South American. 



I am by no means decided as to what is the true name of this 

 Mexican species, after setting aside that of megalopterus. A 

 specimen in the Phila. Acad., from Guayaquil, and labelled "palles- 

 cens,''^ by Mr. Sclater, agrees very well with a Smithsonian skin 

 from Piura, Peru, No. 11,748. This differs from the Mexican bird 

 in a larger size, and in having a longer tail and shorter wings — tail 

 half an inch longer than the wings instead of being a little shorter 

 or not longer. The top of the head is purer gray, or with less of a 

 yellowish-red tinge ; the nuchal streaks much wider and more promi- 

 nent. The most striking differences, however, are in the proportions 

 above mentioned, as well as the very different geographical distri- 

 bution. 



The question now remains as to which of these two species the 

 nauie pallescens should be applied. As, however, Lafresnaye, in 

 comparing pallescens with zonatus, says that it differs especially in 

 form from the latter by longer wings ; and as while the Mexican 

 bird has much longer wings than the South American, which are 

 just equal to those of zonatus, it seems proper to name the Mexican 

 bird pallescens, especially as Lafresnaye gives Mexico as the pre- 

 sumed locality of his species. The South American bird (the G. 

 pallescens of Sclater's Catal.) may then be called Campy lorhynchus 

 halteatus. 



Campylorhynchus nuchalis is easily distinguished by smaller 

 size ; broader stripes on the neck, extending on the back ; the rounded 

 marginal white spots, not bands, on the tail, etc. 



