20 Notices and Descriptions of various New [No. 169. 



inches ; middle tail-feathers nine inches ; and tarse an inch and a half. 

 The deeper shade of colour of this bird distinguishes it from T. sirkee, 

 to which it approximates most nearly, as also the decided brownish hue, 

 concolourous with the back, of its tibial plumes, which in the other are 

 highly rufescent ; and a further marked distinction from T. sirkee con- 

 sists in the hue of the pectoral region, which has no rufescent tinge in 

 the specimen before me of T. affinis, while in T. sirkee, the ferruginous 

 tinge of the abdomen suffuses the breast and throat, passing insensibly, 

 with no decided line of demarcation. The abdominal plumage of this 

 bird is of a less dark tinge than in T. infuscata ; but the general co- 

 louring is much the same as in that species, from which the more slen- 

 der legs and vertically deeper and more abruptly curved bill help to 

 distinguish it. A further description is quite needless. 



Centropus bicolor, Lesson ; C. celebensis, probably of Temminck. A 

 description of this species will be acceptable to British students of orni- 

 thology. Length of wing seven inches, of middle tail-feathers a foot, the 

 outermost shorter by one-half; bill large, measuring to gape an inch and 

 three-quarters in a straight line ; long hind- claw seven- eighths of an inch. 

 Colour of wings and tail, a peculiar dull vinous-ruddy, nearly the same on 

 the flanks, vent, and lower tail-coverts, and with a ferruginous tinge on 

 the rump and upper tail-coverts : head, neck, throat, and breast, dull 

 isabelline, paler towards the throat, and browner on the crown and back ; 

 wing-coverts tinged with the same brown ; and all passing backwards 

 into the vinaceous hue of the great alars and tail. Bill blackish, with 

 horny- white tip : legs apparently plumbeous. Plumage not very spinous, 

 its general character and colouring being much that of the Sirkeers (Tac- 

 cocua). Inhabits the Celebes and the Moluccas. 



Caprimulgidce. The Indian and Malayan species of true Caprimulgus 

 resolve into three different subgroups, each characterized by a particular 

 style of marking : viz. — 1, the C. macrourus group, comprising C. albo- 

 notatus, C. macrourus, C. mahrattensis, and C. asiaticus, which last differs 

 from the three others in having unfeathered tarsi ; these have the two outer 

 tail-feathers on each side broadly tipped with white, which in the females 

 is sullied, more or less reduced in quantity, and sometimes altogether 

 wanting : — 2, the C. indicus group, with a terminal or subterminal 

 white spot on all but the middle pair of tail-feathers, rarely seen., and 

 the white then much reduced in quantity, in the females; — probably 



