Vol. 32, pp. 149-160 September 30, 1919 
PROCEEDINGS 
OF THE 
BIOLOGICAL SOCIETY OF WASHINGTON 
A REVIEW OF REICHENBACH’S GENERA SIPTORNIS 
AND CRANIOLEUCA, WITH DESCRIPTIONS OF 
NEW ALLIED GENERA AND A SUBGENTS. 
BY CHARLES B. CORY. 
The species included in the Genus Siptornis Reichenbach as 
recognized by Sclater* and Sharpet and later by Brabourne and 
Chubbj apparently represent five genera and at least one sub- 
genus, the distinguishing characters of which may be briefly 
described as follows: 
A. Tail feathers rounded at ends or abruptly pointed (not attenuated 
terminally and sharply pointed). 
a. Size small; tail graduated and much shorter than wing (about 34); 
hallux (without claw) longer than outer toe (without claw): wing 
about 4 times length of tarsus. Stptornis Reichenbach. 
(Type Sipternts flammulata Reichenbach)—not 
Sittasomus flammulatus Lesson§ and not Siptornis fammulata Jardine 
(Synallaris striaticollis Lafresnaye.) 
b. Size variable; tail evenly graduated with tail feathers either blunt, 
rounded or abruptly pointed (not attenuated terminally and not 
with most of the feathers sharply pointed); tail varying from slightly 
shorter than wing (albiceps) to much longer than wing (sordida, etc.); 
wing from about 31% times length of tarsus (curtata, etc.) to about 3 
times length of tarsus (humilis, modesta, etc.), or decidedly more than 
3 times length of tarsus (erythrops, subcristata, etc.); hallux (without 
claw) longer than outer toe (without claw) (albiceps, patagonica, etc.), 
or about equal to outer toes (vulpina, etc.), or shorter (as in most 
* Cat. Bds. Brit. Mus . XV. 1890, p. 58. 
} Hand-list Bds., iii, 1901, p. 58. 
t Birds South Am., I, 1912, p. 332. 
§ The type of Sittasomus flammulatus Lesson is a young specimen of Glyphorhynchus 
cuncatus cuneatus (Lichtenstein) (cf. Pucheran, Rev. Mag. Zool.. 1853, p. 489, Menegaux 
and Hellmayr, Mém. Soc. d’Hist. Nat. d’Autun, XIX, 1906, p. 97). 
30—Proc. Brot. Soc. Wasn., Vou. 32, 1919. (149) 
