244 Mr. J. H. Gurney’s List of a Collection of Birds 
Dr. Hartlaub’s measurements of the two supposed species are 
as follows :—- 
C. maxima :—Long. 174-1 S". Rostr. 2 "9"'. Al. 7" S'". Caud. 
4" 5"'. 
C. gigantea :—Long. 154.". Rostr. S" V". Al. 7" 10'". Caud. 
4±". 
The dimensions of six specimens sent to me from Natal are 
as follows :— 
Long. tota. 
Rostri. 
Ala;. 
Caudae. 
No. 1. c? Adult. 17 
31 
8 
44 
No. 2. Adult. 15f 
3-1 
8 
44 
No. 3 . <$ Immature ... 16 
31 
" 7f 
44 
No. 4. $ Adult.. 164 
34 
8 
4f 
No. 5. $ Immature ... 17 
3 
8 
41 
No. 6. 5 Immature ... 161 
31 
8 
44 
The above particulars appear to me clearly to indicate that the 
minute details of measurement in this Kingfisher are subject to 
a good deal of individual variation, and ought not to be too 
much relied on as grounds of specific distinction. 
In this as in several other species of the genus Ceryle , the 
females are distinguished from the males by the greater amount 
of rufous colouring on their lower surface. Mr. Ayres having 
carefully noted the sex of his specimens, I am able to give the 
following particulars of the colouring of the sexes in this species. 
My remarks will be confined to the under side of the bird, the 
upper parts being the same in both males and females. 
6 Adult. Throat and chin white, bordered on the sides 
with black and white mixed : chest rufous, also bordered on the 
sides with black and white: abdomen white; sides white, with 
transverse bars of black : under tail-coverts white, spotted with 
black, the spots in some specimens forming transverse bars : 
feathers on the under side of the wing white. 
$ Adult. Throat and chin as in adult d : chest slate- 
coloured, varied by the feathers having black centres and being 
also more or less barred with transverse white markings; the 
slate-colour and black predominating on the upper part of the 
chest, and the white on the lower part adjoining the abdomen : 
abdomen, sides, under tail-coverts, and feathers on the under 
side of the wings uniform rich rufous. 
