212 
Annals of the Transvaal Museum 
Tytonidae 
Stvix + Flammea flammea + maculata = Tyto alba affinis (cf. Mathews, 
Av. Rec. I. 104, 1912, and C. Grant, Ibis, 1915, p. 258). 
Stvix capensis = Tyto capensis (cf. Mathews, l.c.). 
There is a very pale specimen of this owl from “ Damaraland,” taken 
by C. Wilde, in the Transvaal Museum collection, which is so very different 
from typical specimens that I propose to name it Tyto Capensis Dama- 
RENSIS subsp. nov. ; the facial disc, whole of the underparts of the body 
and under surface of wings and tail are almost pure white instead of 
fulvous, the upper parts with very faint indications of white spots and the 
dark spots on the underparts of the body very small. The lower disc feathers 
show hardly a trace of brown. In size also it appears to be smaller than 
the typical form, the wing measuring 285 mm., as against 320, the tail 
114, as against 120, the tarsus 65, as against 72, and the culmen 19*5, as 
against 21. The precise locality is not stated on the label, but it seems most 
probable that the specimen was secured in passing in the Caprivi Corner 
on one of Wilde’s hunting trips. 
PSITTACIDAE 
The genus Poicephalus contains four well-defined groups of species, 
which may be differentiated as follows : 
1 . Bill pale above and below, wing over 7 inches in length, culmen over i inch 
in length: P. robustus and allies. 
2. Maxilla pale, mandible dark, wing over 7 inches, culmen over i inch: 
P. gulielmi. 
3. Maxilla dark, mandible pale, wing under 7 inches, culmen not over i inch: 
P. fuscicapillus and P. flavifrons. 
4. Entire bill dark, wing under 7 inches, culmen under i inch: P. senegalensis, 
vufiventvis, meyevi and vuppelli. 
The fourth group represents the typical Poicephalus , the third may be 
placed in a new subgenus, Micropsittacus, type Pionus fuscicapillus Verr. 
and Des Murs, the second in a new subgenus, Eupsittacus, type Pionus 
gulielmi Jardine, and the first in a new subgenus Notopsittacus, type 
Psittacus robustus Gmelin. With regard to the last subgenus, three easily 
distinguished forms occur within our limits, and it is possible that these 
wiU eventually prove to be distinct species when material becomes avail- 
able. They are distinguished by the following characters: 
Poicephalus robustus robustus (Gmelin). Region of the crop yellowish, back 
very dark, hind neck yellowish olive, forehead not (or very seldom) red; 
height of lower mandible not more than 19 mm. 
P. robustus suahelicus Rchw. Region of the crop greyish, back yellowish green, 
hindneck grey, forehead broadly red, usually also with a suffusion of red 
over the head and throat; height of the lower mandible about 22 mm., its 
width at the base under 25 mm. 
P. robustus angolensis Rchw. Region of the crop greyish, back dark green, 
hindneck olive, forehead seldom red; height of lower mandible about 
22 mm., its width at the base about 25 mm. 
Palaeornithidae = Psittaculidae (cf. Mathews, B. Australia, vi. 169, 1917). 
