376 BULLETIN 50, UlSriTED STATES NATIONAL MUSEUM. 



d. Lower breast, abdomen, and under tail-coverts immaculate ocliraceoiis or 

 ochraceous-buff. (Southeastern Brazil.) 



Notharchus swainsoni (extralimital).o 



dd. Lower breast brown; abdomen and under tail-coverts wbite broadly barred 



or squamated with brown or blackish. (Upper Amazons; Venezuela?; 



Cayenne?) Notharchus ordii (extralimital) fi 



aa. Smaller (wing less than 76 mm.); no white collar on hindneck; tail spotted with 

 white. {Notharchus tectus.) 

 b. Black jugular band averaging broader; pileum more extensively and distinctly 

 spotted with white; averaging larger (wing 71-75, tail 52.5-57, exposed culmen 

 22-25). (British Guiana and Cayenne to Lower Amazon Valley.) 



Notharchus tectus tectus (extralimital). c 

 bb. Black jugular band averaging narrower; pileum less extensively and distinctly 

 spotted with v/hite (the spots usually confined to forehead, and there some- 

 times indistinct); averaging smaller (wing 66.5-73.5, tail 50-60.5, exposed 

 culmen 20.5-22). (Western Ecuador to Panama.) 



Notharchus tectus subtectus (p. 379). 



NOTHARCHUS HYPERRHYNCHUS DYSONI (Sclater). 



DYSON'S PUFF-BIRD. 



Adults (sexes alike). — Forehead, superciliary region, suborbital, 

 auricular, and malar regions, chin, throat, foreneck, and upper chest, 

 and collar across hindneck white, the auricular, suborbital, and malar 

 regions more or less intermixed with dark gray or blackish (in 

 form of broad but indistinct transverse bars) ; lores, crown, occiput, 

 and nape plain, slightly glossy, black or slate-black; rest of upper 



« Blucco] swainsoni Gray and Mitchell, Gen. Birds, i, Dec, 1846, 74 (based on 

 Tamatia macrorhynchus Swainson, Zool. Illustr., pi. 99). — Bucco swainsoni Sclater, 

 Ann. N.H., ser. 2, xiii, 1854, 358; Proc. Zool. Soc. Lond., 1855, 196; Mon. Jacamars 

 and Puffbirds, 1882, 73, pi. 23; Cat. Birds Brit. Mus., xix, 1891, 183.— [Capito] swain- 

 soni Bonaparte, Consp. Av., i, 1850, 146.- — [Tamatia^ sivainsoni Bonaparte, Ateneo 

 Italiano, ii, 1854, 128 (Consp. Volucr. Zygod., 1854, 13). — N[otharchus] swainsoni 

 Cabanis and Heine, Mus. Hein., iv, heft 1, 1863, 151. 



b Bucco ordii Cassin, Proc. Ac. Nat. Sci. Phila., v, 1851, 154, pi. 8 ("Venezuela"; 

 coll. Ac. Nat. Sci. Phila.). — Biicco ordi Sclater, Proc. Zool. Soc. Lond., 1855, 196; 

 Mon. Jacamars and Puff-birds, 1882, 77, pi. 25; Cat. Birds Brit. Mus., xix, 1891, 184. — 

 [Tamatia] ordi Bonaparte, Ateneo Italiano, ii, 1854, 128 (Consp. Volucr. Zygod., 1854, 

 13). — N[otharchus] ordi Cabanis and Heine, Mus. Hein., iv, heft 1, 1863, 152. 



I have not seen this well-marked species. | 



c Bucco tectus Boddaert, Tabl. PL Enl., 1783, 43 (Cayenne; based on Barhu b, 

 plastron noir Buff on. Hist. Nat. Ois., xiii, 155; PI. Enl., 688, fig. 2); Sclater, Mon. 

 Jacamars and Puff-birds, 1882, 79, pi. 26; Cat. Birds Brit. Mus., xix, 1891, 185.— 

 [Bucco] melanoleucos Gmelin, Syst. Nat., i, pt. i, 1788, 406 (Cayenne; based on Le 

 plus petit Barhu a poitrine noire de Cayenne, Buffon, PL Enl., 688, fig. 2; Qtc.).— Bucco 

 melanoleucos TeTom.inc'k, Cat. Syst., 1807, 55; Vieillot, Nouv. Diet. d'Hist. Nat.,iii, 

 1816,241. — Tamatia melanoleucus Lesson, Traite d'Orn., 1831, 167. — C[apito] melano- 

 leucus Wagler, Syst. Av., 1827, Capito, sp. 2. — N[othriscus] tectus Cabanis and Heine, 

 Mus. Hein., iv, heft 1, 1863, 146 (Pard). 



Another subspecies, Notharchus tectus picatus {Bucco picatus Sclater, Proc. Zool. 

 Soc. Lond., 1855, 194; Mon. Jacamars and Puff-birds, 1882, 81; Cat. Birds Brit. Mus., 

 xix, 1891, 186; N[othriscus] picatus Cabanis and Heine, Mus. Hein., iv, heft 1, 1863, 

 146), from the Upper Amazons, I have not seen. It is said to differ in larger size, the 

 black color more intense, and the six middle rectrices devoid of white spots. 



