oi.. xvr,"j 

 189:). J 



PROCEEDINGS OF THE NATIONAL MUSEUM. 



673 



plumbeous cast to tlie under x)arts, even tlie chest being waslied 

 with this color. They measure as follows : 



Whether the Guiana and Uijper Amazon birds thus differ constantly 

 I am unable to state with certainty; but in view of tlie great uniform- 

 ity in coloration in the tliree Guiana birds and their constantly much 

 larger bills I have little doubt that sucli will prove to be the case, and 

 therefore i)ropose, provisionally, tlie name FormicariuH niyrifrons (jlau- 

 copectus* for the Guiana bird. 



3. Forniicarius analis (Lafresuaye). 



Mrjolhcra aixdis LAFit.,t Mii_t?. do Zool., 1837 ("Synopsis Avium"), CI. ii, p. 14 (Vuri- 

 carcs et Chuiiiitos, Bolivia).— D'Onn., Yoy. Ois., " 1835-1844/' 191, pi. 6 his, iig. 1. 

 ? Mii'ioihera anaViS Bonap. Cousp. i, 1850, 205 (Brazil). 



Formicar'uis atialis SCL., P. Z. S., 1857, 46, part (Bolivia); 1858,277, part (Bolivia); 

 Cat. B. Brit. Mus., XV, 1890, 304, part (Iocs. ine. Peru and o. Ecuador).— Salv., 

 P. Z. S., 1866, 74, part (Bolivia").— Scl. and Sai.v., P. Z. S., 1867, 751 (Xeberos and 

 Chyavetas, c. Peru) ; Norn. Neotr., 1873, 75, part (Bolivia).— Taczan., P. Z. S., 1882, 

 32 (Huambo, n. e. Peru) ; Oru. Pdr., ii, 1884, 78 (Yuriinaguas, Xeveros, Cliayavetas, 

 Huambo, and Paucal, e. Peru).— Allen, Bull. Am. Mus., N. H., n. No. 2, 1889,98 

 (Yungas, Bolivia). — Salv. and Godm., Biol. Centr. Am. Aves, ii, pt. 29, 1892, 235, 

 part (B(divia). 



Hab. — Bolivia and eastern Peru. 



Sp. Char. — Wliole to]) oi" head oliv^aceous-brown, like back, but 

 centers of feathers dusky; sides of neck similar in color to top of head, 

 but rather lighter — not at all inclining to cinnamomcous or lufous; un- 

 der tail coverts varying from bright rufous-tawny to tawny-chestnut 

 — always uniform. 



Adult fetiiale (coll. yalvin and Godmaii, Yqiiitos, Bolivia, August L'4, 

 1878, H. Whitely). — Feathers of i)ileum dull blackish broadly mar- 

 gined with sepia-brown, producing a scaled a])pearaiice; rest of ui)per 

 ^surface clear olive-se]>ia or bister, deepening into a warmer brown 

 (approaching N'andyke brown) on secondaries and brightening into 

 almost mummy brown on upjier tail coverts; outer web of exterior 

 feathers of alula deep broccoli broAvn; primary coverts, wholly black- 

 isli dusky; tail blackisli brown terminally, browner basally. Lores, 

 suborbital and malar regions, chin, and throat dull black, the first with 



" Type, No. 43536, Am. Mua. Nat. Hist., British Guiana ; Alexander. 



f'LAFU. ot D'Orb." are n.sually quoted as tli(^ de.scriber.-! of this species, but the 

 former only can properly Ite considered as its dcscriber. It is true that Lafresuaye, 

 in tlio article cited above, quotes "D'Orb., Voy dans I'AnU'r. merid., ])1. 6 />»«,'' but 

 neitlKU' this plate nor the description in D'Orbigny's "Voyage" were ]inb]ished until 

 several years after the publication of IjufrcHiiaye's description. 

 Proc. N. M. 03 43 



