1865.] GENERA AND SPECIES OF CYPSELIDZ. 603 
C. subfurcatus, Blyth, J. A. 8S. B. xviii. p. 807, et Cat. p. 85; 
Moore & Horsf. Cat. i. p. 386; Burgess, P. Z. S. 1854, p- 265; 
Swinhoe, P. Z. S. 1863, p. 264. 
C. leucopygialis, Cassin, Pr. Acad. Phil. v. p. 58, pl. 13. f. 1. 
Niger: gutture et vitta uropygiali albis: fronte murina: cauda 
viz furcata, omnino nigra: long. tota 5°2, ale 5°3, caude rectr. 
ext. 2°0, med. 1°8. 
Hab. Southern China and Formosa (Swinhoe) ; Malay peninsula ; 
Penang (Cantor); Malacca (Wallace); Sumatra (Cassin) ; Java 
(Miller). 
Of this species Mr. Swinhoe writes (P. Z. S. 1863, p. 264)— 
“* Larger than C. affnis, and of a much blacker and glossier colour, 
with much more white on the throat; tail longer and subfurcate. 
Sexes alike. Wings varying somewhat in length. Resident on the 
Chinese coast not much higher than Amoy, whence it ranges south- 
wards to Malacca. Found also in Southern Formosa.” 
I do not find much difference in size between Mr. Swinhoe’s ex- 
amples of this species and others of C. afinis. But I think the two 
species are distinct. In this bird the plumage is altogether darker, 
the head, wings, and tail being glossy black like the back. In (. 
afinis these parts are brown. The furcation of the tail also presents 
a constant and well-marked difference, and the tail itself is decidedly 
longer. 
In Southern China C, subfurcatus builds its nest “ under the eaves 
and rafters of the houses, much in the form of the House Martin 
(Chelidon urbica), but the exterior coating of it differs in being 
composed of thin layers of wool, hair, and dried grass, glued one 
above the other with the saliva of the bird, and lined internally with 
feathers.” (Swinhoe, Ibis, 1863, p. 254.) 
In Penang, according to Blyth, quoting Col. Low, several pairs 
of this Swift inhabit a ‘‘ continuous common nest’’ placed under the 
eaves of the verandahs (J. A. S. B. xviii. p. 807). 
There are three specimens of this species in the Leyden Museum 
from Java (Samarang), collected by S. Miiller in 1828, and labelled 
“* Cypselus leucorrhous, 8. Miller, n. sp.’ In the same collection 
are two examples labelled ‘‘ Nepal (Hodgson).’’ If this latter lo- 
cality be correct, it would appear that C. subfurcatus ranges up the 
Malayan peninsula to the frontiers of Nepal, as is the case with 
many other of the Malayan representatives of Indian species. But 
C. nipalensis, Hodgson (J. A. S. B. x. 1836, p. 780), is usually 
referred to OC. affinis. 
12. CYPSELUS AFFINIS. 
Cypselus affinis, Gray, Ill. Ind. Zool. pl. 35. f. 2; Jerdon, B. 
Ind. i. p. 178; Blyth, Cat. p. 86; Horsf. Cat. i. p. 106; Jard. 
Contr. Orn. 1849, p. 5, et 1851, p. 157. 
OC. montanus, Jerdon. 
C. abessynicus, Streubel, Isis, 1848, p. 354; Hartl. Orn. West. 
Afr. p. 24. 
