238 DR. J. J. KAUP’S MONOGRAPH OF THE STRIGID#. 
Subgenus a. Lophostriz, Less. 
Diagn.—The bill long and projected. The first wing-feather, as in all the subgenera of 
the first rank, as long as the tenth; second longer than the eighth ; third longer than 
the seventh ; fourth as long as the sixth; fifth nearly as long as the sixth and the 
longest. Tail as long as the whole body. Toes naked, with broad soles, and the nails 
falcated (as in the third subgenus, Ketupa, and the fifth subgenus, Pseudoptynz). 
Obs.—This subgenus represents the genus Scops in its genus. This is the reason 
why some authors place it next to that genus, which is quite wrong. 
1. Buso cristatus, Kp. 
Strix cristata, Daud. Tr. Orn. ii. p. 207. 
Ephualtes cristatus, G. R. Gray. 
Lophostrix cristata, Bp. 
griseata, Less. 
Stria griseata, Lath. 
superciliosa, Shaw. 
Bubo griseatus, Cuv. 
Le Vaill. Afr. t. 48 ; Strickland in Jard. Contr. Orn. cum. fig. var.* (1848). 
Descr.—Nearly the size of Otus vulgaris, but apparently larger from its long tail. 
Bill yellow. Front whitish, brownish-banded. A white stripe over the eye to the 
long ear-horns. On the hind margin of the ear a white spot. Upper parts chestnut- 
brown, with innumerable fine zigzag cross-lines and spots. Margin of the shoulder- 
coverts and the small coverts of the wings with irregular white spots on the exterior 
webs. The arm-wings rufous-brown, black-pointed, with six narrow zigzag bands, and 
rusty-yellow spots on the outer webs, which are rufous on the blackish inner webs. 
The interior of the wing from the emarginations is banded with rusty-yellow on a large 
clear rusty-yellow field. The inner coverts of the margins of the wings rufous, with 
blackish spots. The under parts finely and elegantly cross-banded and spotted, darkest 
on the chest. Tail on the superior part rusty-brown with fine blackish spots, with 
lighter points on the inner webs, and with ten irregular white or rusty-yellow cross- 
bands. ‘Tarsi with rusty-yellow cross-bands. 
Dimens.—Head 73, bill from the gape 33-35, wing 300, tail 200, the longest ear- 
horn-feather 58, tarsus 44, middle toe 32 mm. long. 
Hab. Guiana and Cayenne. 
Subgenus b. Bubo, Kp. 
Diagn.—With small, curved, and black bill. Wings long. The first wing-feather 
shorter than the fifth. The first very clearly, second to fifth obtusely emarginated. 
(See Pl. LVII. fig. 5.) 
These are the representatives of the genus Otus in its own genus. 
* Since separated asa distinct species, Lophostrix stricklandi, Sclater and Salvin, in ‘ The Ibis,’ 1859, p. 221. 
