Vol. xiv.] 52 



considerably smaller size, mnch weaker and shorter bill, chest- 

 nut (instead of olivaceous) rump, and olivaceous-brown (not 

 chestnut-rufous) bend of the wing. The light shaft-stripes, 

 which in the Central- American species are extended over the 

 nape, are in the new form restricted to the crown, the fulvous 

 spots confined to the throat and much less conspicuously 

 edged with brown, and the breast uniform without any light 

 markings. Wing 84^, tail 90, culmen 20 mm. 



Hab. Coca R., Upper Napo, in Eastern Ecuador. 



Typus in Mus. Tring : ? ad. (Goodfellow Coll.). 



D. secunda extends the range of the genus from Central 

 America to Ecuador. Mr. Cherrie, when describing D. typica, 

 had only two specimens with apparently incomplete tails, for 

 he says that the bird has only ten rectrices, whereas the 

 three specimens in the Tring Museum and four others in the 

 British Museum possess twelve. He compared the genus 

 with Glyphorhynchus and Sittasomus, but a close examination 

 proves it to be much more nearly related to, perhaps barely 

 separable from, Dendrocincla, from which it differs mainly 

 in the form of the bill and nostrils. The bill is flatter 

 and lower, with the culmen not rounded, but conspicuously 

 ridged and more abruptly compressed towards the tip. The 

 nostrils in Dendrocincla are entirely hidden by a membrane, 

 except a very narrow slit-like opening on the lower edge, 

 whereas in Deconychura the whole lower portion of the nasal 

 groove is exposed. Dendrocincla longicauda, Pelz., shows 

 the same structure, but is, of course, easily distinguishable 

 by its much larger size, heavier and longer bill, and other 

 details. 



Dysithamnus aroy^e, n. sp. 



$ ad. Upper parts very dark slate-grey, inclining to 

 blackish on the crown and occiput, the forehead being slaty 

 with indistinct darker shaft-lines. Wing-coverts black, with 

 large white spots on the tips ; quills and tail-feathers 

 blackish, edged with slate-grey, and the latter broadly tipped 

 with white, these tips being narrower on the inner ones and 

 barely perceptible on the middle pair. Sides of the head 



