394 CAPEIMtrLGID.E. 



Caprimulgus guianensis, Gm. Syst. Nat, i. p. 1030 ' . 



Nyctidromus guianensis, Cassin, Pr. Ac. Phil. 1860, p. 133 '' ; Lawr. Ann. Lye. N. Y. vii. p. 290 '' ; 

 Scl. P.Z.S. 1864, p. 176"; Scl. & Salv. P.Z. S. 1864, p. 364.^^ Salv. P. Z. S. 1870, 

 p. 204'°. 



Nyctidromus albicoUis merrilli, Sennett, Auk, 1888, p. 44 ''^ 



Nyctidromus merrilli, Hartert, Cat. Birds Brit. Mus. xvi. p. 591 ". 



Supra brunneus griseo et rufo minute irroratus, plumis verticis medialiter nigris striam medianam formantibus, 

 plumis verticis lateralibus et dorsi stria angusta nigra notatis ; scapularibus fascia lata subterminali nigra 

 cervino limbata, tectricibus alarum cervino vermioulatis et macula subrotunda terminal! ornatis : subtus 

 cervinus, mento et gula lateribus nigro fasciatis, gutture plaga magna mediana nivea supra earn plaga 

 nigra ; pectore crebre, abdomine sparsim fasciis nigris notatis ; alls nigris, primariis quinqne externis fascia 

 obliqua nivea notatis, primariis internis et secnndariis fulvo fasciatis ; cauda nigra, rectricibus mediis 

 griseo irroratis fasciis indistinctis exhibentibus, rectricibus secunda et tertia ab externo in pogonio interno 

 plaga magna nivea ornatis. Long, tota circa 10-5, alae 6-5, caudae 6, tarsi 1-0, dig. med. cum ungue I'l. 

 Descr. maris ex Chimalapa, Tehuantepee. Mus. nostr.) 



5 mari similis, sed caudae rectrice subexterno in pogonio interno ad apicem tantum albo. 



Hob. NoETH America, S.E. Texas is 37 38._Mexico, Tampico {W. B. Richardson ^% 

 Valley of Mexico (Herrera^^), Misantla {F. D. G. ^% Jalapa (de Oca^\ Ferrari- 

 Perez), Coatepec, Huatusco, Rio Rancho Nuevo, Santa Ana {F. Ferrari-Perez), 

 Orizaba (Botteri), Cordova {Salle 27), Playa Vicente (M. Trujillo), Tres Marias Is. 

 {Grayson^), Presidio de Mazatlan {Forrer), Mazatlan, Plains of Colima {Xantus^), 

 Tepic, San Bias, Colima, Santiago {W. B. Richardson), Mazatiopam in Puebla 

 {F. Ferrari-Perez^'^), Chihuitan, Santa Efigenia {Sumichrast ^), Tehuantepec, 

 Tonala, Salina Cruz, Chimalapa (W. B. Richardson), Acapulco, Teapa {Mrs. 

 H. H. Smith), Northern Yucatan ^s, Peto, Buctzotz, Temax {G. F. Gaumer), 

 Tunkas, Shkolak and Ticul {W. Stone^^), Merida {SchoW), Mugeres and 

 Cozumel Islands (G'. F. Gaumer ^^); British Honduras {Dyson), Orange Walk 

 {G.F. Gaumer), Belize {Blancaneauw) ; Guatemala^^, Pine-ridge of Poctum, Chisec, 

 Choctum, Coban, Cahabon, Teleman, San Geronimo, Duenas, Retalhuleu {0. S. 

 &F. J). G.) ; Honduras, San Pedro {G. M. Whitely 12), Segovia River {Townsend^^) ; 

 Salvador, La Libertad, Volcan de San Miguel {W. B. Richardson); Nicaragua, 

 Chinandega, Momotombo {W. B. R.), Sucuya^^, Omotepe ^^, San Juan del Sur^^ 

 {Nutting); Costa Rica, San Jose, Angostura (/. Carmiol^, C/ierrie), Irazn {Boucard^^, 

 Rogers), La Palma {Nutting ^®), Orosi, Turrialba, Moravia, Pacuar, Chirripo 

 {v. Frantzius ^^), Las Trojas, Pozo Azul de Pirris, Alajuela, Naranjo de Cartago 

 {Zeledon 22) ; Panama, Chiriqui, Bugaba, Mina de Chorcha, Chitra, Calovevora 

 {Arce^^), Line of Railway {McLeannan^'^ ^^ s^), Turbo {Wood^^). — South America 

 generally, from Colombia and Guiana ^^ to South Brazil ^^. 



The extent of individual variation shown in this species is considerable, and it exists 

 to a very great extent without reference to locality, sex, or age. The general cast of 

 the upper plumage is sometimes grey, sometimes rich rufous, and there is every inter- 

 mediate gradation of tone between these colours. There is also great difference in 



