18. LUEOCALIS. (J21 



18. LUROCALIS. 



Lurocalis, Cass. Proa. Ac. Philad. v. (1851) p. 189. L. semitorqutitus. 



Tail short, truncate ; tarsus feathered in front. The young birds 

 rather peculiarly marked with white. 

 liiDiye. South America. 



Key to the Species. 



a. Abdomen barred semitorquatus, p. G21. 



b. Abdomen umtorm rufous rvjiventris, p. Q22. 



1. Lurocalis semitorquatus. 



Petit Engoulevunt tachete de Cayenne, Buf. Hist. Nat. Ois. ii. 



p. 540 (177i») ; Daubent. PI. Enl. p. 734 (1783). 

 White-collared Goatsucker, Lath. Gen. Stjn. ii. pt. ii. p. 599 (1783). 

 Caprmmlgus semitorquatus, Gin. Syst. Nat. ii. p. 1031 (1788); 



Vieill. Nouv. Diet. x. p. -241 (1817). 

 Podager gouldi, Gray, Ge?i. B. i. pi. 18 (1849). 

 Lurocalis semitorquatus, Cass. Pruc. Ac. Phil. v. p. 189 (1851) • Scl 



Cat. Am. B. p. 278 (1862); id. P. Z. S. 1866, p. 132; Tavlor, 



Ibis, 1864, p. 90 (Trinidad); Pelz. Orn. Bras. p. 15 (1867); 



Gray, Hand-l. i. p. 61 (1869) ; Layard, Ibis, 1873, p. 390; jScI ^ 



Salu. Nomencl. Av. Neotr. p. 95 (1873); Salviti, Ibis, 1885, p. 438 



(B. Guiana). 

 Chordeiles semitorquatus, Tsch. Faun. Peru. p. 130, pi. vi. (1849) ■ 



Biirm. Syst. Ueh. Th. Bras. ii. p. 397 (1856) ; Cab. S; Heine, Musi 



Hem. iii. p. 87 (note) (1860). 

 Antrostomus semitorquatus, Bj). Consp. i. p. 61 (1850). 

 Caprimulgus nattereri, Temm. PL Col. 107 (1823). 

 Podager nattereri, Bp. Consp. i. p. 63 (1850). 

 Lurocalis nattereri, Cass. Proc. Ac. Phil. v. p. 590 (1851) ; Scl Cat 



Am. B. p. 278 (1862); Pelz. Orn. Bras. p. 15 (1867); Scl. & 



Salv. P. Z. S. 1867, p. 583 (Para) ; iid. Nomencl. Av. Neotr. 



p. 95 (1873) ; Salvin, Cat. Strickl. Coll. p. 375 (1882). 

 Chordeiles nattereri, Burm. Syst. Ueb. Th. Bras. ii. p. 398 (1856). 

 Urocolus nattereri. Cab. ^ Heine, Mas. Hein. iii. p. 87 (1860). 



Adult. Deep brownish black above, each feather with lateral 

 rufous spots, most of them centred with blackish ; scapulars whitish 

 grey at the basal parts ; last secondaries with more or less distinct 

 whitish-grey bars ; quills deep brown, with interrupted iiifous bars 

 and spots ; first primary ofteu uniform ; rectrices similar in colour, 

 but most of theni with greyish tips and the pair next to the central 

 ones often with indistinct white tips; chin, throat, and upper part 

 of the breast deep brown, spotted and indistinctly barred with pale 

 rufous ; a large white spot across _the throat : lower part of the 

 breast regularly barred with dark brown and pale rufous or buff; 

 abdomen, lower tail-coverts, and under wing-coverts deep rusty 

 rufous, regularly barred with blackish throughout. Total length 

 about 9 to 10 inches, wing 8 to S'o inches, tail 3-7, tarsus 0-5. 



The female seems to be similar to the male. 



Yoiiny birds are different from the adult ; the feathers of the 

 lower surface are paler, the breast mottled with whitish ; throat- 



