64 PROCEEDINGS OF THE NATIONAL MUSEUM. 



different from RJu/nchocydux .nlphnre^eev., with which it alone needs 

 comparison. From all of a good series of .nlpkurescens it differs as 

 we have noted. 



PERISSOTRICCUS, new genus. 



(%,rs r/. /..-Similar to On-hUus Cabanis, tnit tail very much 

 shorter-less than half of wing, and not decidedly longer than tarsus. 

 Type, Todlroxtrvin ecaudatum d'Orbigny and I.afresnaye. 



The species commonly known as Orehlh.^ ecaadafus differs so much 

 from the type of the genus in which it has been placed that its formal 

 separation^ seems advisable. In addition to the structural characters 

 above given mav be added the very different pattern of coloration- 

 unstreaked below, lacking the blackish auricular spot, and with a 

 cinereous or blackish crown. The species are: 



Perissotnccvx ecmidatus (d'Orbigny and Lafresnaye). 



PerissotriccKK atricajrf7hf.'< (Ijawrence). 



HEMITRICCUS PAMMICTUS, new species. 



Char>^ ,n.-_Similar to Jh.nlfriccm dJoj.., l>ut upper parts more 

 greenish olive; throat, cheeks, sides, flanks, and crissum much tinged 

 with yellowish olive; edgings of wing-quills more yellowish; wings 

 with two pale yellow bars; bill more compressed. 



Bescrlptlon.-^yV^, adult (sex unknown), No. 2896^ L.b.N.M. 

 South America [probably some part of southeastern Brazil], cruise ot 

 the DeJa^var.; Dr. G. R. Horner. Upper surface olive green, rather 

 paler on the rump; tail fuscous, margined with the color ot the back; 

 wings fuscous, edged externally with olive green-this on the quills 

 more yellowish-the innermost secondaries tipped with yellowish 

 white- the greater and median coverts broadly tipped with light 

 vellow, forming two wing-bars; lores, eye ring, and iU-defaned super- 

 ciliarv stripe dull yellowish white; cheeks pale olive yellow; sides ot 

 neck "dull light olive green; chin and throat pale dingy olive j^ellow; 

 remainder of lower surface dull white, the breast tinged with brown- 

 ish buff the sides, ffanks. and crissum shaded with olive yellow; Iming 

 of wing sulphur vellow. Length of wing. 50 mm.; tail, 48 mm.; 

 exposed culmen, 9 mm.; tarsus, 17.5 mm.; middle toe, 9 mm. 



The sino-le specimen of this new species has been for a long time in 

 the National Museum, and has been labeled Phyllomirtes rentrahs, but 

 apparently is not even generically identical, as a comparison of speci- 

 mens readily proves. In fact, it is much nearer Ilenutr.eercs du>ps 

 than to any other species, though having rather a more narrow bill. 

 in this respect being somewhat intermediate ))etween llemitnccus and 

 PhyUoscartes. In coloration it differs conspicuously from / hylloxeartrs 

 ventndh in having the abdomen white instead of yellow, and in being 

 generally paler throughout. 



