124 Dr. Heuglin on new or little- known Birds 



related, but much larger, is SundevaPs Megalcema leucotis, from 

 Lower Caffraria (Ofvers. 1850, p. 109). 



8. P. DiADEMATUs, HcugUn. Poffunias diadematus, Heugl. 

 Syst. Uebers. p. 47. no. 479. 



Only found iu the wide Steppes of the Kitsch-Negroes, be- 

 tween 7° and 8° N.L. on the western bank of the Bahr el Abiad. 

 It is common on high trees, especially on the colossal Syca- 

 mores. This species resembles the nearly-related, but larger, 

 and also more or less highly-coloured P. unidentatus (Licht.) 

 from Kafferland, and P. duchallui, Cass. [Barbatula formosa, 

 Verr.), from W. Africa. 



Genus Barbatula, Lesson. 



1. B. pusiLLA, Bp. Bucco barbatula, Temm. 



. In a collection of birds made on the Blue Nile, which I pre- 

 sented to the Royal Natural History Cabinet at Stuttgard, I 

 first found an apparent male of this species. It substantially 

 agrees with the diagnosis given by Hartlaub (Syst. Orn. W. 

 Afrik. p. 173), though slightly differing in dimensions, which in 

 my examples are as follows : — Long, tota circ. 4*0, rostri a 

 fronte 0-48, tarsi 06, alse 2*0, caudse 1*3 poll, et lin. Gall. 



2. B. CHRYSOCOMA (Tcmm.). Bucco chrysocomus, Temm. 

 PI. Col. 536. fig. 2. 



I found specimens of this humble little bird concealed in 

 thick foliage along the streams of Central and West Abyssinia, 

 as well as on the Bahr el Abiad, and also more rarely on the 

 main stream of the Nile between Khartoum and Berber. It may 

 be abundant, but from its habits is very difficult to find. 



Genus Trachyphonus, Ranzani. 



1. T. margaritatus (RUpp.). Bucco margaritatus, Riipp. 

 Atlas, t. 20. 



Common in the Bajuda-Steppes along the banks of the Nile, 

 south of Berber (17° N.L.), in Kordofan, Sennaar, Abyssinia, 

 Taka, and in the Abyssinian Avail and Somali coast-lands. Ap- 

 parently confined to E.Africa, but very widely difi'used. The male 

 is somewhat larger than the female. Iris violet. 



