488 BtrLLETlN 50, UNITED STATES NATIONAL MUSEUM. 



=Caprimulgi Eidgway, Bull. Ills. State Labr. Nat. Hist., No. 4, May, 1881, 

 185.— Shufbldt, Proc. Zool. Soc. Load., 1885, 913; Linn. Soc. Joum., Zool., 

 XX, 1888, 299.— PuBRBRiNGBE, Unters. Morph. Syst. Vog., ii, 1888, 1567.— 

 SALViNand Godman, Biol. Centr.-Am., Aves, ii, 1892, 882.— Gadow, Bronn'e 

 Thier-Keicli, Vog., ii, 1891, 241, 301; Classif. Vertebr., 1898, xv, 36 (sub- 

 order).— Beddakd, Struct, and Classif. Birds, 1898, 231.— Knowmon, Birds 

 of the World, 1909, 50. 



'^Coracoidex Stbjnegek, Stand. Nat. Hist.,iv, 1885, 371, 384, in text (includes 

 Coracise). 



K^Caprimulgidae Cabakis, in Wiegmann's Archiv fiir Naturg., i, 1847, 346 

 ( = Caprimulgi+Steatomithes) . 



<CCapnmulgidm Cabanis and Heine, Mus. Hein., iii, 1860, 86 (=CaprimulgidsB+ 

 Nyctibiidse+Steatomithidse). 



<^Steatorninae Cabanis, in Wiegmann's Archiv fur Naturg., i, 1847, 346 (=Stea- 

 tomithes+Nyctibiidse). — Bonapabte, Consp. Av., i, 1850, 57 (=Steator- 

 nitHdae+Podargidse+Nyctibiidse). 



■<iSteatornithinae Bonaparte, Consp. Av.,i, 1850, 57 (=Steatomitlie8+Podargi+ 

 Nyctibiidse). 



Synpelmous, anisodactyle Coraciiformes with flexor tendons of 

 type Va (as in Macrochires), spina externa sterni vestigial, two 

 carotid arteries, syrinx bronchial, and young ptilopsedic (as in 

 Striges). 



Palate schizognathous (Caprimulgi, except OJiordeiles) or desmog- 

 nathous {Ghordeiles, Podargi, and Steatornithes) ; basipterygoid 

 processes present (but small) or absent (in Podargi) ; nares holorhi- 

 nal; vomer present; metasternum 2-notched, 4-notched, or entire; 

 spina interna sterni absent; coracoids separated; ectepicondyloid 

 process of humerus small, terminal; hypotarsus complex; cervical 

 vertebrae 13-14; two carotid arteries; cseca functional, large (appar- 

 ently absent in genus ^EgotTieles of Podargidse) ; myological formula 

 AXY or (in Steatornithes) XY; intestinal convolutions of type VI; 

 flexor tendons of type Va; spinal pteryla well-defined on neck, 

 forked on upper back; aftershaft present but small; oil-gland (when 

 present) nude; secondaries aquinto-cubital; primaries 10; rectrices 

 10; adult downs present but restricted to apteria; young ptilopsedic 

 (as in Striges). 



KEY TO THE StJPERPAMILIES OP NYCTICOBACia!. 



a. Dorsal vertebrse heterocoelous (saddle-shaped); palatines separated medially, 

 expanded posteriorly, and with latero-posterior processes; rostrum fixed; myo- 

 logical formula AXY. 

 6. Palate schizognathous (except in Chordeiles); a palatines very narrow or 

 slender anteriorly, enormously expanded posteriorly; vomer truncated ante- 

 riorly; premaxillary relatively small, constituting much less than anterior 

 half of skull, not completely ossified (i. e., with a pair of latero-median grooves 

 or fossse), strongly contracted anteriorly, with straight or slightly concave 

 lateral outlines; basipterygoid processes present; oil-gland present. 



Caprimulgi (p. 489). 



" And probably other Chordeilinse. 



