410 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



Genus LEPTOTRICCUS Cabanis and Heine. 



Le2>lotriccus'J Cabanis and Heine, Mus. Hein., ii, Sept., J859, 54, footnoto. 



(Type, L. sylviolus Cabanis and Heine.) 

 Phyllooeda Bertoni, Aves Nueves del Paraguay, Jan., 1901, 120. (Type, P. chlo- 



roleuca 'BertoTii=Leptotnceus sylviolus Cabanis and Heine. &) 



I have not seen any species of this genus and therefore am unable 

 to give an original diagnosis. Unfortunately, neither the original 

 describer nor later authorities characterize the genus adequately. 

 A free translation of Cabanis' diagnosis is as follows: 



In form of bill similar to Serpophaga, but wings more strongly developed and 

 rather longer, tail-feathers wider and longer, and plumage greenish, resembling that 

 of Euscarthmus. 



Sclater (Cat. Birds Brit. Mus., xiv, 1888, 99) says: 



In Lcptotriccus the bill is longer antl more eompressed than in Pogonotriccus, and the 

 rictal l)ristles not quite so dense, but the forms are closely allied. The feet are weak as 

 in Pogonotriccus . but the tarsi are rather longer. 



Salvin and Godman (Biol. Centr.-Am., Aves, ii, 1888, 18) do not 

 throw much additional light on its relationships, thfeir remarks on the 

 subject being as follows: 



With a bill similar to that of Lophotriccas the rictal bristles seem to be longer, there 

 is no occipital crest, the 2d, 3d, 4th, and 5th quills are nearly equal, lst=8th, the tail 

 is long and very slightly rounded, and the feathers wide.- than in Todirostrnm,, 

 nearly=wing, the tarsus=J wing. 



^ KEY TO THE SPECIES OF LEPTOTRICCUS. 



a. Under parts white; wing with(_nit yellow bands. 



b. Pileum olive-green like back. (Southeastern Brazil.) 



Leptotriccus sylviola (extralimital).'' 

 bb. Pileum slate-gray in contrast with olive-green of l)ack. (Panama.) 



Leptotriccus superciliaris (p. 411) 

 flo. lender parts sulphur yellow; wing with two yellow l)ands. (Venezuela.) 



Leptotriccus flaviventris (extralimital).rf 



o"Von XsTf roi, zart und rpiKKoiy 



^According to Von Ihering (Revista Museu Paulista, vi, 1904, 325); bftt Lynch- 

 Arribalzaga (An. Mus. Nac. Buenos Aires, vii, 1902, 389) says Bertoni's species=/'/iy/- 

 loscartes ventralis {Muscicapa rentralis Temminck). Since Von Ihering's determination 

 dates two years later, however, and besides was made by comparison of one of Bertoni 's 

 co-types by Count von Berlepsch, Lynch-Arribalzaga's determination is doulitless 

 incorrect. 



c L[eptotriccus] sylviolus Cabanis and Heine, Mus. Hein., ii, 1859, 54, footnote (Brazil; 



■ coll. Berlin Mus.). — Leptotriccus sylviola Sclater, Cat. Am. Birds, 1862, 211; Cat. 



Birds Brit. Mus., xiv, 1888, 99. — [Euscarthmus] sylvicola Gray, Hand-list, i, ]8()9, 350, 



no. 5301. — Phyllocicia chloroleuca Bertoni, Aves Nueves del Paraguay, Jan., 1901, 120 



(upper Parand). 



d Leptotriccus flaviventris'H.&rin-t, Bull. Brit. Orn. Club, no. xlvii, Oct. 30, ]S!»7, p. v. 

 (Ejido and Merida, Venezuela; coll. Tring Mus.); Ibis, 1898, 145 (reprint). 



