158 NOVITATES ZOOLOGICAE XXI, 1911. blackish spot on top of tbe muzzle ; * the dark cheek-stripe mixed and shaded with black ; no bntiy or sandy streak or edging between the black lateral band and the white (if the bfllv. Still more important is the similarity of the cranial character-istics. Among these tiiay be mentioned the almost straight and strongly developed premaxillaries, wliich are broadly truncate in front, and behind reach so far backward that they form a long suture with the nasals. From this it may be seen that I regard any comparison between G. albonotata and the (iazella (lorcris-isabella-littoralis-osiris group unnecessary. The latter arc all of them much smaller animals, with less developed lateral bands. CRITICAL NOTES ON THE TYPES OE LITTLE-KNOAVN SPECIES OF NEOTROPICAL BIRDS.-Part IILf By C. E. HELLMAYR. THE present third instalment emliraces the results of studies upon some fifteen type-specimens in various Eurojieau and American Museums. In addition to the gentlemeu mentioned in the jireccdiug parts of this paper acknowledgments for the loan of material are due to Mr. Valentin Bianchi, of St. Petersburg, and Count T. Salvadori, of Turin. The author hopes to continue the researches in this line, although his ever-growing ofHcial duties have not allowed him to give so much time to this kind of work as he would have wished. T2. Donacobius albovittatus Lafr. &, Orb. = D. atricapillus (Linn. ) juv. Tunlus utricdjiilliis Linnaeus, Si/xt. Xiit. xii. i. p. i95 (ITlilJ. — ex Brisson ; "Cap. b. spei," errore ! Edsl Brazil substituted as typical habitat, auct. Berlepsch iS; Hartert, rjU2). Donacobius alboritkitus Lafresnaye & D'Orbigny, Syn. Av. i. in Maij. Zoul. vii, cl. ii. p. I'j (18S7. — Chiquitos and Guarayos, rep. BoUviana). No. 1. Mus. d'Hist. Nat. Paris, skin: "? Guarayos, 1S34. D'Orbigny coll. No. l'J3. 1). albocittatux Nob." Type . . Wing 81 ; tail 'J:i ; bill 2.!)f mm. The type-specimeu is quite a young bird in iluffy plumage, and agrees in every respect with a skin I'rom Han Esteban, Venezuela i Mus. H. von Berlepscli, No. 8371), both having a broad white superciliary stripe. This character is also present, though less developed, in a sjiecimen from Bahia and a Bogota-skin in the collections of the Tring Museum. All these examples have, as remains of the juvenile plumage, on the back and abdomen numerous flnffy feathers intermixed. Two specimens (one from the (Jaura district, the other from Pebas, N.E. Pern) in the Tring Museum have already attained the plumage of the adult, yet a few whitish streaks are still to be seen above the eye aud ear-coverts. Therefore I have not the slightest doubt that the birds with white eyebrow are merely the young of D. atricaijillas. Although I have not yet seen any adults from Bolivia, they are not likely to be difierent from the Brazilian race, since specimens from Paraguay and iS.W. Brazil (Mattogrosso) are practically identical with those from more northern localities (Bahia, Cayenne, Canra district, San Esteban, Puerto Cabello, and Bogota i. * This holds good fur (Jaztdla thtnngoni luitiaVnf Liiunberg. from British East Africa; while southern specimens from the region around Kilimanjaro, fi-om which Gunther's type-specimens of Qazella thomsoni originated, have no black nose-patch. f I'art I. : i\oc. /!wl. xiii. I'JUO, pp. 305-52 ; Part II. : I.e. .\x. 1913, pp. 227-25li,
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