30 FliOCEEDINGS OF THE NATIONAL MUSEUM. voi,.xxii. 



ulars, reddish chestnut; under wing-coverts and axillars light greenish 

 yellow with a decided bufi'y tinge. Bill in life slate color; tarsi dull 

 light green. 



The single specimen obtained by Mr. Currie differs so much from a 

 Gaboon example, as above indicated, that it without doubt represents 

 an undescribed race, if, indeed, not a distinct species. It is evidently 

 the same as Dr. Biittikofer's specimens from Liberia, exhibiting all the 

 differences from true caroli mentioned by him, ^ as well as others which 

 apparently escaped his notice. The specimen at hand from Gaboon, 

 the original locality of caroli, corresponds closely with published 

 descriptions of this form, and is apparently a typical example. No 

 specimens from the territory intervening between Liberia and Gaboon 

 have been available in the present connection; but the differences 

 between caroli and arizelus are such as seem to indicate subspecific 

 relationship, and arizelus has, therefore, been given a trinomial desig- 

 nation. 



Family MOTAOILLID^. 



MOTACILLA VIDUA Sundevall. 



Motacilla vidua Sundevall, OEfv. K. Vet. Akad. Forh. Stockli., 1850, p. 128. 

 One specimen, an adult male in breeding jjlumage. 



Family PYCNONOTIDJE. 



STELGIDILLAS,- new genus. 



Chars, gen. — Genus generi ''Chlorocichla" dicto simile, sed maxillte 

 tcmii parte subterminali distincte serrata; uec corpore subtns clare 

 flavesceute. 



Type. — Andropadus gracilirostris Strickland. The uncertainty which 

 has attended the determination of the proper generic affinities of 

 Andropadus gracilirostris has led to the placing of this species in three 

 different genera, with the characters of none of which does it suffi- 

 ciently agree. From Criniger it may be at once distinguished by the 

 depressed and slender bill — the maxilla with serrations on the cutting 

 edge just posterior to the subterminal notch. The narrow, depressed 

 bill separates it easily from either Andropadus or Eurillas, while from 

 GMoroGichla, to which it seems to be most closely allied, it differs in 

 the presence of serrations on the distal portion of the maxillar tomium. 

 All the known species of Chlorocichla, moreover, are yellow or yellow- 

 ish olive below, and the genus, as restricted by Captain Shelley,^ is a 

 well-defined group. 



The species described by Oabanis as Andropadus gracilis ^ is not per- 

 fectly typical, but should apparently be associated generically with 

 gracilirostris. The genus will then include Stelgidillas gracilirostris 



' Notes Leyden Museum, VII, 1885, p. 221. ■' Birds of Africa, I, 1896, p. 63. 

 2(5r£A;Kz's, strigilis; /AAds, turdus. <Orn. Centralbl., 1880, p. 174. 



