FAM. PIPRIDAz II 
— Crown and nape bright ved; back green; under parts yellowish white, 
Foreneck, breast and abdomen with narrow longitudinal streaks of 
AUST OD ee eo ee re Msn, G Minoan Veg io JON Seo | 
3. First and second primaries distinctly emarginated and much narrowed 
on the tip of the tnner web. No ved on the foreneck; chestnut stripes 
on the under parts less numerous. . . . . . . . ..,. . I. M. REGULUS REGULUS &. 
— First and second primaries normal. Foreneck stained with crimson ; 
chestnut brown stripes on lower parts brighter and much more 
UNCKOUS ET se ey se ee VD REGULUS SMRIOMARUSH Te 
4. Sides of the belly move or less striped with pale chestnut byown .  . SO ath aC A eae ae ans ieee? OT 
= Sidesyojatnervelly mor sivapen with chestiunovowite | 2) ys) =) ee eee Op 
5. First primary emarginated near the tip of theinner web. . . . . 1. M. REGULUS REGULUS Q. 
— First primary not emargmated . S56 oo ce oe oo of Ay WI, REGUS GOATS ©, 
6. Smaller : wing about 50 mm. Under parts grayish white, indistinctly 
jilammulated with pale yellowish, chest and sides washed with 
PUCCINI Shwe eee oe eS Se ay ey wo NIE PyROCRPEALUSEOS 
— Larger : wing about 58 mm. Breast and sides dark olive green; middle 
of abdomen and under tail coverts pale yellow eee seer4re Vio mmEncrosAm el 
1. Macheropterus regulus regulus (Hahn). 
Pipra vegulus Hahn, V6gel aus Afrika, Asien, etc. Lief. 4, pl. 4, f. 1, 2 (1819) (« Brasilien »). 
Pipra strigilata Wied, Reise Brasil. Vol. 1, p. 187 (1820) (Barra de Jucu, Espiritu Santo). 
Pipra lineata (1) Thunberg, Mém. Acad. St-Pétersb. 1822, p. 284, t. 8, f. 1. 
Hab. Woodregion of Southeastern Brazil from Bahia to Espiritu Santo and Rio de Janeiro. 
2. Machzropterus regulus striolatus (Bonaparte). 
Pipra striolata Bonaparte, Proc. Zool. Soc. Lond. Part 5, 1837, p. 122 (1838. — « from that portion of Brazil 
bordering on Peru »). c 
Hab. Upper Amazonia from Northern Peru to Eastern Columbia, occurring also in the Cauca Valley, 
Colombia. 
3. Machzropterus pyrocephalus (Sclater). (Plate 3, Fig. 5.) 
Pipra pyrocephala Sclater, Rev. Mag. Zool. 1852, p. 9 (hab. ign.). 
Hab. Only known from Peru (Ucayali, Huallaga, Rioja, Moyobamba), the head quarters of the Rio 
Madeira, in the Brazilian state of Mattogrosso; and from the Caura River, Venezuela (2). 
4. Machzropterus deliciosus (Sclater). (Plate 3, Fig. 1.) 
Pipra delictosa Sclater, Proc. Zoo]. Soc. Lond. 1860, p. 90 (Nanegal, Western Ecuador). 
Hab. Western Ecuador. 
4. GENUS CHLOROPIPO CABANIS & HEINE 
Chloropipo Cabanis & Heine, Mus. Heinean. Vol. 2, p. go, note 2 (1859) (type of the genus : C. flavi- 
collis Cabanis & Heine). 
Characters. This genus is closely allied to Pifra, with which it agrees in the shape of 
the bill and tail, but the tail as well as the wings are very much longer, the metatarsus relati- 
vely short, the feet feeble, and the rictal bristles rather stronger. The bill is perhaps somewhat 
longer, yet strongly ridged as in Pipra, The tail is nearly square, the median rectrices being 
(1) Not verified by the author. 
(2) Specimens from this locality are perhaps somewhat different. 
