of the Genus Hemicercus. 245 



1. H. concretus (Temm.). This I take to be the young- 

 male of the true H. concretus. 



2. H. hartlaubi (Malh.). In my opinion the adult male 

 of H. concretus. 



3. H. sordidus (Eyton). Apparently the adult male of 

 Eyton's species. 



4. H. brookeanus (Salvad.). Apparently nothing more 

 than H. sordidus in the yellow-coloured plumage found in 

 freshly moulted birds of the present genus. 



Lord Tweeddale (Ibis^ 1877;, p. 291) describes what he 

 considers to be the various stages of plumage of H. sordidus, 

 and adds, " The adult male of H. concretus (Reinw.), ex Java 

 (PL Col. 90. fig. 1), differs from H. sordidus by having the 

 entire crest crimson, although not of so dark a shade as in 

 H. sordidus. The occurrence of this species beyond Java 

 rests on no good authority. It is figured by Malherbe 

 (Mouogr. Picid. pi. xli. fig. 5), under the title of Micropicus 

 hartlaubi.'^ Lord Tweeddale further remarks that in ex- 

 amples sent by Mr. Buxton from Lampong, S.E. Sumatra, 

 the females are undistinguishable from Javan P. concretus 

 ? and Malaccan examples in the plumage of the female, 

 and that the adult male is identical with adult males from 

 Malacca. In all of the above remarks I thoroughly concur, 

 aud I may state that there appears to be no distinguishing 

 character between the females of H. concretus and H. 

 sordidus. 



Mr, Sharpe (Ibis, 1879, p. 240) enumerates the four 

 species recognized by Count Salvadori (Ucc. Born. p. 46), 

 and considers H. brookeanus to be a yelloM^-stained example 

 of H. sordidus. He further states that H. sordidus will have 

 to bear the name of H. concretus, and regards the entirely 

 red crest in H. hartlaubi as a good specific character, and 

 gives as the habitat, Malacca {Gould), Java {Wallace), Su- 

 matra (Temminck), Borneo {Mus. Turati) ; but he regards 

 the last locality as perhaps doubtful. Mr. Sharpe further 

 adds that he would not be surprised if H. hartlaubi turned 

 out to be a very old full-plumaged H. sordidus. H. con- 

 cretus, he says, is founded on a young bird, whose progress 



