Genera and Species of Birds. 415 



nigris, tertiariis cinereo limbatis; rectricibus fusco-nigris; gula 



pectoreque dilute cinereis, abdomine crissoque albidis. Rostrum 



pedesque atro-fusci. 



Inhabits Chili. 



Beak slightly broader than in E.parulus (Kittlitz), and proving 

 the affinity of this genus to Tyrannula. Feathers of the crown 

 rather lengthened, forming a crest. 



Crown black, with a concealed white vertical spot. Upper 

 parts gray, palest on the rump ; middle and greater wing-covers 

 dusky black, tipped with gray; remiges dusky, tertials margined 

 with gray ; tail dusky black ; chin, throat and breast pale gray ; 

 belly and lower tail-covers nearly white ; beak and legs blackish. 



Total length 4 inches ; beak to gape 6 lines, to fi'ont 4 lines ; 

 wing 2 inches 2 lines ; medial rectrices 2 inches, external 1 inch 

 10 lines ; tarsus 8 lines. 



LANIID^, FORMICARIIN^*. 



Genus Holocneiviis, Strickl. {oKos, integer, Kvr]^\s, ocrea.) 



Rostrum elongatum, ad basin subdepressum, apicem versus sub- 

 compressum, mandibulis juxta apicem leviter emarginatis. Culmen 

 rectus, dertro deflexo ; commissura recta, ad apicem deflexa, gonys 

 elongata, subrecta, leviter ascendens. Vibrissse nullse. Nares ovatae, 

 nudae, a plumis lori subremotse. Alae mediocres, rotundatse, remige 

 4^ vel 5^ longissima, remige P dimidio breviore. Cauda subbrevis, 

 rotundata. Tarsi elongati, acrotarsiis et paratarsiis integris. Digiti 

 sublongi, graciles ; externus phalange prima ad medium annexus. 



The two birds which I propose to distinguish under the above 

 generic name are distinguished from the genera Formicivora, 

 Swains., and Mijrmeciza, Gray, by the elongate beak, short tail, 

 and entne acrotarsus ; the latter character, as well as their 

 greater length of tail, distinguishes them from Urotomus, Swains., 

 and the greater freedom of the external toe separates them from 

 Pithys, Vieill. Possibly the present genus may be referable to 

 Leptorhynchus, Menetries; but as the latter name is preoccupied, 

 Holocnemis may in that case take its place. 



HoLocNEMis FLAMMATA, Strickl. [Plate XIII.] 



H, corpore supra olivaceo-fusco, alls fuscis, tectricibus omnibus oli- 

 vaceo limbatis, scapis et gutta subtriquetra apicali albis ; remigi- 

 bus olivaceo limbatis ; cauda obscure fusca, rectricibus obtuse acu- 

 minatis, lateralibus albido stricte terminatis ; gula alba ; genis et 

 partibus infernis pallide olivaceis, litura in singulis plumis longi- 



* In this subfamily I include the genus Tliamnophilus, as it cannot pos- 

 sibly be separated from the American Ant-thrushes in any natural arrange- 

 ment. 



