BIRDS OF ETHIOPIA AND KENYA COLONY 447 



Uhehe country north to Dodonia and Maliaka. Similar to radcliffei 

 in having round spots, but differs in being whiter, less yellowish, 

 below. 



In this barbet the juvenal plumage resembles the adult stage. The 

 sexes are alike. The molting specimens examined are not sufficiently 

 diverse in their respective stages to enable me to tell much of the 

 order of feather renewal except that the caudal molt is centrifugal 

 and slightly precedes the alar molt. 



The species inhabits the Acacia thorn bush country throughout its 

 range. 



TRICHOLAEMA DIADEMATUM DIADEMATUI.I (Heuglin) 



Larniodon diadcmatum Hehjglin, S. B. Akad. Wien, 1856, p. 299 (nomen 

 nudum ) . 



Pogonorhynchus diadematus Heuglin, Ibis, 1861, pp. 124, 126, pi. 5: Steppes of 

 the Kitsch-Negroes, i. e., upper White Nile. 



Speciviens collected: 



Two male adults, one female adult, Dire Daoua, Ethiopia, De- 

 cember 6-21, 1911. 



Two female adults, Hawash RiA^er, Ethiopia, February 10-12, 

 1912. 



Five male adults, one male juvenal, six female adults, Gato River 

 near Gardula, Ethiopia, April 6 to May 11, 1912. 



One male juvenal. Mar Mora, Ethiopia, June 14, 1912. 



The two juvenal birds fit the description of Reichenow's Tricho- 

 laema. nigrifrons^'^ except that they are not heavily spotted below, 

 and the margins of the rectrices and remiges are yellow, not whitish. 

 Erlanger ^- showed that nigiifrorus was the young of massaicmn, but 

 hitherto the first plumage of typical diadematum has not been 

 recorded. 



The systematics of the red-fronted barbet present some difficulties, 

 which I am afraid I can outline better than I can dispose of. The 

 b'rds inhabiting the upper White Nile, southern Ethiopia, northern 

 Uganda, and northern Kenya Colony are unspotted or only very 

 slightly spotted on the underparts, while the race massaicvj7n of 

 southern Kenya Colony and the northern half of Tanganyika Terri- 

 tory is usually heavily spotted on the venter. However, birds occur 

 far to the south in the range of massaicum Avhich agree in plumage 

 with diadematum. Thus, two specimens from Dodoma, Tanganyika 

 Territory (A. Loveridge collection), are diadematum in every respect, 

 being wholly unspotted on the breast and belly and only dully 

 marked on the flanks. The question then arises as to whether the 



siJourn. f. Ornith., 1899, p. 418. 

 «2Idcm. 1905, p. 493. 



