PACHYCEPHALOPSIS HATTAMENSIS. 
H attain Thickhead. 
Pachjcephala hattamensis, Meyer, Sitz. k. Ak. Wissensch. zu Wien, lxix. p. 391 (1874).— Salvad. Ann. Mus. 
Civ. Gen. x. p. 142 (1877). — Oust. Bull. Soc. Philom. Paris, 1877. 
Pachycephala lialtamensis (errore), Sclater, Ibis, 1874, p. 417. 
Pachycephalopsis hattamensis , Salvad. Ann. Mus. Civ. Genov, xv. p. 48, no. 47 (1879). — Id. Orn. Papuasia &c. 
ii. p. 23(5 (1881). 
The shorter tail and longer tarsi in this species have been considered by Count Salvador! sufficient to 
separate the bird generic-ally from the genus Pachycephala ; and although I was at first disposed to doubt 
the admissibility of adopting his genus Pachycephalopsis for the species, I am now inclined to think that he 
was right in effecting this separation. Unfortunately, before I had taken this view, the printing of the Plate 
had been finished ; and hence the discrepancy of the name on the latter with that at the head of the present 
article. 
As far as we know, the present species is only found in North-western New Guinea, having been 
discovered in the district of Hattam by Dr. Meyer ; and it has been met with in the same country and on 
the Arfak Mountains by the Italian travellers D’Albertis and Beccari. There would appear to be no 
difference in the sexes ; but in the young birds, according to Count Salvador!, the colour is browner and 
more white on the abdomen, and the external aspect of the quills is rufous. 
I add a translation of the description given by the last-named author in his work on the Birds of New 
Guinea: — Head, neck, and sides of the head ashy; lores white; back and rump greenish olive; chin and 
throat white ; lower throat, breast, and abdomen olive-yellow, duller on the lower throat and the breast ; 
quills dusky, externally margined with brownish rufous ; the upper wing-coverts dusky, margined with 
olivaceous ; under wing-coverts rufous ; upper tail-coverts and tail brownish rufous ; under tail-coverts 
pale brown ; the shafts of the tail-feathers extending a little beyond the web. 
Signor D’Albertis states that the iris is chestnut, the bill black, and the feet dusky. 
The figures in the Plate represent a pair of birds of the natural size. They are drawn from the typical 
specimen kindly lent to me by Dr. Meyer. 
[R. B. S.] 
