( 321 ) 



East Argcnthm : Santa Elena, east of La Paz (Holland), Ocampo and Mocovi 

 (Venturi). 



C. Brazil, Mattogrosso : Pansecco (Natterer). 



Ohs. The original locality " Chili " is doubtless erroneous. Oustalet's type 

 formed part of a collection which contained, among others, Lcptastheniira platrnsis 

 (Rchli.), a species only known to occur in the eastern portions of the Argentine- 

 Republic. 



A very near ally of 11. sclateri is //. striaticcps Salv.,* of which Imt a single 

 specimen, tlie type, is known. This is an adult c?, with the fonrtli and filth jirimaries 

 of exactly the same sha^ie, as in the SS ad. of //. sclateri. It is strange that this 

 })eculiarity has not been noticed by Salvin, who never referred to //. hoUandi when 

 describing the species, but compared it with 11. flaviventris, with which it has not the 

 least relations ! On comparing Salvia's type with our series of //. xclateri, I find 

 not the slightest diflerenco in coloration : bnt the bird from British Guiana has 

 a smaller bill with the under mandible whitish. Perhaps wings and tail are also 

 rather shorter,t bnt the specimen being in very worn plnmage, I would not lay 

 ranch stress upon this trifling variation. As 16 (J c? of the southern If. sclateri have 

 the bill entirely black, I think the pale lower mandible of the Aunai sjieeimen is 

 sufficient to warrant the recognition of a northern form : //. sclateri striaticeps Salv. 

 In the hills near Tncuman another species of the same group is found, the male 

 of which has the same curious wing-strncture as //. s. sclateri and //. s. striaticeps. 

 It dilt'ers, however, from both in the following points. The eye region and ear- 

 coverts are not blackish, but dull greenish, and the back is of a much duller, more 

 brownish green, without any trace of the dusky mottling. The most striking 

 diifercnce consists of the form and colour of the feathers of the pilenm. AVhile 

 the two forms discussed above have a long jwinted crest striped with black and 

 ochraceous, in the Tncumau species the feathers of the pilenm are of normal shape 

 and length (as in II. flaviventris) and uniform earthy brown, only those of the 

 forehead being narrowly edged with rusty buff. The Triug Museum possesses three 

 3 S ad. of this bird, which has been described by M. Lillo as a new genus, Pseiulo- 

 coloptcryx dinellianus. Its proper name is therefore Ilapalocercus dinellianus 

 (Lillo). 



19. Leptopogou tristis Scl. & Salv. = Pliylloscartes ventralis augustirostris 



(Lafr. & D'Orb.). 



Miisciciqm (Diyust/rosti-is Lafresnaye et D'Orbigny, Si/ii. Av. i. in May. ZuvK 1837. cl. ii. p. 52 



(Yungas, Bolivia). 

 Muscicapara angnntiroatrh D'Orbigny, Voi/at/e, Oinriinx, p. 325 (Yungas, de la Paz). 

 Lfjitopogoii (!) irislis Sclater & Salvin, P. Z. S. 187l>. p. 25-1 (Simacu, Yungas of Bolivia). 



Wing. Tail. Bill. 



1. Mus. Paris. Adult. Tyiie oi M.a/i(/Hstirostris 



Lafr. & D'Orb. Yungas, Bolivie, D'Orbigny, 



1834 ."JT 59 in. mm. 



2. Mus. I'rit. Av.juv. Simacu, Bolivia. Buckley 



coll. No. 0(j. Type of Leptopogon tristis 



Scl. & Salv 54 54 1]| mm. 



3. Mus. Brit. Adult. Samaii)ata, Bolivia. G. 



Garlepp coll 551 58 12 mm. 



* Jiull. B. U. C vii. (isil-) p. xvi. (Aun.ai, Brit. (Juiana). 

 t Wing 41-J- ; tail 45 ; bill lu mm. 



