CAPRIMCLGID^ — TELE GOATSUCKERS. 



399 



The Caprimulgince have beeu divided by Dr. Sclater as follows : ■ 



A. Glabrirostres. Rictus smooth. 



I. Tarsus stout, longer than middle toe, entirely naked 



II. Tarsus moderate, shorter than middle toe, more or less clothed 

 feathers. 



a. Tail short, almost square 



b. Tail elongated, a little forked 



B. Setirostres. Rictus bristled. 



III. AeriaL Tarsi ,«hort, more or less clothed. 



a. Wings normal, second and third quills longest. 



1. Tail moderate, rounded at tip 



2. Tail elongated, even at tip 



3. Tail very long, forked or bifiircate .... 



5. Winsrs abnormal in male ; outer six quills nearly equal 

 IT. Terrestrial. Tarsi elongated, naked. 



a. Bill moderately broad ; nasal aperture scarcely prominent 



6. Bill very broad ; nasal aperture much projecting (Jamaica) . 



Podagefi: 



with 



Lurocalis. 

 Chordeites. 



Antrostomtts. 



Steno2>sis. 



Hydropsalis. 



Hehothreptus. 



Nyctidromus. 

 Siphonorliis. 



Of the genera enumerated above, ouly two certainly belong to the fauna 

 of the United States {Clwrdeiles and Antrostomns), although there is some 

 reason to suppose that Nyctidromus should be included, as among the manu- 



Chordeitfs popetue. 



script drawings of Dr. Berlandier, of birds collected at Matamoras on the 

 Lower Eio Grande, is one that can be readily referi-ed to no other tlian N. 

 albicollis} The briefest diagnoses of these three genera w ill be as follows : — 



Chordeiles. Gape without bristles; tarsi moderate, partly feathered; tail narrow, 

 slightly forked ; plumage rather compact. 



1 Nyctidromus albicollis. Caprimulgus albicollis and fliiianensis, Gmelix, S. N. I, 1788, 

 1030. Nyclidromus amcricamis, Cassix, Pr. A. X. S. 18.51, 179. Xiictidramus ffuianensis, 

 dcrbyamis', grallnrius, ^nffinis of authors. Xyctidiomus ulbicoUis, Sclatee, P. Z. .S. 1866, 

 1 45. Hab. From Northern Slexico southward to Ecuador and Brazil. 



