364 CERTHIIU^. 



Ciilmen 0-G inch, wing 3-10, tail 1-38, tarsus 0-68. 

 0-62 „ „ 3-05, „ 1-42, „ 0-65. 

 Hah. North Australia. 



a,b. [c?] ad. st. Port Essington. Capt. W. Charahers, R.N. [P.]. 



c. c? ad. sk. North Australia. J. R. Elsey, Esq. [C.]. 



d. (S imm. sk. North Austraha. Gould Collection. 



e. Juv. sk. North Australia. Gould Collection. 



f>ff- 62 ^^- sk. North Australia. F. D. Godman and 0. Salvin, 



Esqrs. [P.]. 



6. Sittella striata. 



SitteUa striata, Gould, Ann. S,- Mag. K. II. ser. 4, iv. p. 110 ; id. 



Suppl. B. Aiistr. pi. 54 ; Castelnau 4'' Unnimy, Proc. IJtni. Sac. 



K S. W. 1877, p. .382 ; Ramsay, Proc. Lbin. Soc. N. S. W. ii. p. 192. 

 Sittella leucoptera (juv.), Ramsay, P. Z. S. 1868, p. 387. 



Adult male (tj-pe of species). Head all round, sides of neck, 

 throat, and upper breast sooty black ; hind neck, mantle, scapulars, 

 and back greyish brown, each feather with a very broad longitudinal 

 central streak of blackish brown ; wing-coverts and quills uniform 

 blackish brown, with faintly paler edgings ; middle third of primaries 

 white ; breast, flanks, and abdomen white, each feather ■with a very 

 broad longitudinal dark-brown streak ; all the other j^arts as in 

 S. leucoptera. 



Female. Only the toj) of the head black ; sides of head, throat, 

 and rest of underparts of body white, and streaked like the 

 breast in the males. Some specimens have whitish feathers near 

 the base of the upper bill. 



Immature birds have the cap dark browu, the underparts of the 

 body dull white and much streaked with dark brown. 



Culmen. Wiug. Tail. Tarsus, 



in. in. in. in. 



Adidt S (tvpe) 0-.5 3-0 145 065 



Adult $ (t^-pe) 0-6 3-03 1-35 0-61 



Adult S • Ool 303 1-42 0-65 



Adult $ . 0-55 3-12 1-55 0-64 



Ohs. In all the other allied species, the female develops a 

 greater amount of black on the sides of the head than does the 

 male ; and it seems very probable that the same tendency would be 

 followed bj- this species too, and that the black-throated individuals 

 are the females. However, Mr. Gould has described such birds as the 

 males ; and as none of the specimens I have been able to examine 

 are sesed, this question remains unsettled. 



Hah. Gulf of Carpentaria ; Cape York to Rockingham Bay. 



a,b. c? 2 ad. sk. North Australia. J. Goidd, Esq. 



c. Juv. St. North Australia. Sir T. Mitchell [P.]. 



d-f. S 2 ad. sk. Somerset, Cape York J. Gould, Esq. [C.]. 

 ( Cockerell). (Types of species.) 



g-i. [ cJ ] ad. sk. Somerset, Cape York. F. D. Godman and 0. Sal- 



vin, Esqrs. [P.]. 



