(343 ) 



than to D. s. capitalis, and shonkl be called D. srhisfaceus squamosns Snethl. if 

 really distinct. The female is not distinguishable from sckistaceus. See also 

 Not). Zool. xiv. 1907. pp. 61-3, where a review of these birds is given. 



A nest containing two eggs was taken at S. Isabel, together with the parent 

 bird (No. 633), on October 7, 1907. It is a small, loose strnctnre of dry leaves, 

 roots, and stems of various plants, without a particularly soft lining, fastened on 

 a forked branch like an oriole's nest {Oriolus galhida). The eggs, which resemble 

 those of the Red-backed Shrike (Lanias collurio), are creamy white, mottled and 

 blotched with chocolate and underlying pale lavender, the chocolate markings being 

 crowded around the thicker end. The eggs measure 21 x 1.5, 20 x loi mm. 



[207. Dysithamnus murinus (Scl. & Salv.). 



Thamnophilus murinus (Natterer MS.) Solater & Salvia, Proc. Zool. Soc. Land. 1867. p. 756 (1867. — 

 Cayenne ; Marabitanas and Birra do Rio Negro ; Xeberos. — We accept Barva do Rio Negro 

 as typical locality). 



Dysithaniiiis murinus Hellmayr, Nov. Zool. xir. p. 371 (Humaytha). 



Left bank : Humaytha (Hoffmanns).] 



208. Dysithamnus ardesiacus saturninus (Pelz.). 



[Dysithamnus ardesiacus Sclater & Salvin, Proc. Zool. Soc. Loud. 1867. p. 756 (1867. — based on 

 T. seliistacciis (nee D'Orbigny) Sclater, P. Z. S. 1858. pp. 66, 222.— Rio Napo, Eastern 

 Ecuador).] 



Thamnophilus salurninus Pelzeln, Zur Orii. Bras. ii. p. 147 (1868. — Borha fixed as typ. habitat ; 

 cf. Hellmayr, Verhandl. Zool. Bol. Ges. Wien liii. 1903. p. 216). 



D. a. saturninus Hellmayr, Nov. Zool. xiv. p. 371 (Borba). 



Nos. 51, 370. SS vix ad., Calama, 16. vi., 11. viii. 1007.— Wing 72, 76 ; tail 

 57, 59 ; bill 17, IS mm. 



No. 984. 6 vix ad., Maruins, 9. vii. 1908.— Wing 73 ; tail 55 ; bill 1 7 mm. 



No. 786. S juv., AUianca, 14. xi. 1907.— Wing 74 ; tail 58 ; bill 17^ mm. 



Nos. 279, 356. ? S, Calama, 27. vii., 8. viii. 1907,— Wing 77, 79; tail 57, 63; 

 bill 19 mm. 



" Iris brown or grey, feet plumbeous (black), bill black." » 



The males have the throat and middle of the foreneck deep black. The outer 

 rectrices are conspicuously edged with white at the tip. Some have scarcely more 

 white at the base of the interscapular feathers than examples from British Guiana, 

 Veneznela, etc., but average slightly larger with longer tail. Cf. my remarks in jXar. 

 Zool. xiv. p. 371, and in Verhandl. Zool. Bot. Gesellsck. Wien liii. 1903. pp. 216-7. 



209. Thamnomanes caesius persimilis Hellm. 



\_Muscicaiia caesia Temminck, Eec. PI. col. livr. 3. tab. 17. fig.^ 1, 2 (October 1820.— South-East 



Brazil ; cf. Nov. Zool. xii. p. 285).] 

 Thamnomanes caesius persimilis Hellmayr, Nov. Zool. xiv. p. 61 (1907.— Teffe, Rio Solimoes) ; idem, 



I.e. p. 371 (Humaytha). 

 T. caesius (uec Temminck), Pelzeln, Zur Orn. Bras. ii. 1868. p. 80 (Salto do Girao) ; Ihering, 



Revisl. Mas. Paulist. vi. 1905. p. 410 (Rio Juruii). 

 T. caesius ylaucus (nee Cabanis) Hellmayr, Nov. Zool. xiv. 1907. p. 17 (Itaituba, Rio Tapajdz- 



¥ , e.xamined by me). 

 T. caesius hoffuiannsi (nee Hellmayr) Snethlage, Jouru. f. Ornith. 1908. p. 510 (Bella Vista, Villa 



Braga : RioTapajoz) ; eadem, I.e. p. 531 (Arumatheua, R. Tooantins). 



Nos. 193, 301. Si ad., CSalama, 8. vii., 9. viii. 1907. " Iris brown or greyish 

 brown, feet and bill black."— Wing 74, 71 ; tail 64, 65; bill 16^, 17 mm. 



