568 On a New Kingfisher of the Genus Corytlioriiis. 
S. Thome bird the crown has malachite-green bars down 
to the forehead. But the most remarkable characters 
appear in the youDg birds — a fact of considerable importance. 
It is Tveli known that the young of allied species are usually 
alike, and that the adults become different, shewing the 
specific characters. But_, on the contrary, in the S. Thome 
bird the adult examples are very similar to those of the allied 
species, and greater differences are shown in the young. I am 
not acquainted with a similar state of affairs in any other bird. 
' It appears that specimens of the genus Corythornis from 
S. Thome, besides those collected by Signor Fea, are only to 
be found in the Museum of Hamburg, collected by Weiss, 
as mentioned by Hartlaub, and in the Museum of Lisbon, 
which has examples procured by several collectors, especially 
by Mr. F. Newton (as mentioned by Prof. Barboza du 
Bocage and De Sousa) ; but all these ornithologists have 
wrongly identified the S. Thome bird with C„ gdlerita. 
Prof. Bocage also mentions a young female, but makes no 
allusion whatever to the very peculiar juvenile characters ! 
To these remarks I add a Latin description of the new 
species and the references which appear to belong to it. 
CORYTHORXIS THOMENSIS, SD. UOV. (Plate XIII.) 
C. ualeritce similis, sed gastrseo castaneo, loris nigris, regione 
malari castanea paullum nigro tincta, tseniisque trans- 
versis pilei cseruleo-viridibus, sen malachitaceis, diversa. 
Long. tot. mm. 145-147, al. 59, caud. 28, rostri culm. 32. 
Av.jr. Begione malari, loris, capitis lateribus, pectore medio 
ej usque lateribus fusco-nigris ; dorso maculis cseruleo- 
malachitaceis notato ; rostro nigro. 
Alcedo cceruleocephala Hartl. (nee Gm.) Beitr. Orn. 
Westafr. in Wiebel's Verz. pp. 1, ]8 (S. Thome, Weiss) 
(1850); id. Contr. Orn. 3850, p. 131 (S. Thome) ; id. Abh. 
naturw. Ver. Hamb. ii. 2, pp. 1, 18 (S. Thome, Weiss) (1852) ; 
id. Orn. Westafr. p. 36 (S. Thome, Weiss) (1857); Sousa, 
Jorn. Sc. Lisb. n. xlvii. p. 151 (S. Thome) (1888). 
Corythornis ccsruleocephala, Boc. (nee Gm.) Jorn. Sc. 
Lisb. i. p. 134 (S. Thome, Dr. Nunes) (1857) ; Sharpe, Mon. 
Alced. p. 39 (part.) (1869); Boc. Jorn. Sc. Lisb. n. xxvi. 
