340 Mr. J. J. Monteiro on Birds collected in Angola. 



repeated short three times, and answered by the female in a lower 

 note. It is very loud, and can be heard at a considerable dis- 

 tance, particularly at night. 



They are said to build their nest on the very highest Adanso- 

 nias, in the hollow or cavity formed at the base or junction of 

 the branches with the trunk. 



[Dr. Hartlaub describes the new and doubtful species of Mr. 

 Monteiro^s interesting collection as follows. — Ed.] 



(1.) Vidua decora, sp. nov. 



Similis V. erythrorhyjichce, sed minor et macula mentali nigra 

 nulla. 



The black chin-spot, so conspicuous in western and northern 

 specimens of Vidua erythrorhyncha, seems to be constantly want- 

 ing in the southern race, which for this reason we prefer to 

 separate specifically. Swainson, as also Cabanis, did not over- 

 look this curious difference. The Angolan specimen in Mr. Mon- 

 teiro's collection is very small, and has the whole under-parts of 

 the body of a pure and uniform white. 



(2.) HiRUNDO MONTEiRi, n. sp. (Plate XI.) 



Supra nigro-chalybea,interscapulii et dorsi plumis ad basin niveis; 

 tergo et uropygio late vulpino-rufis ; subtus Isete et dilute 

 rufa ; gula et subalaribus albo-isabellinis ; cauda profunde 

 furcata; rectricum 3 utrinque lateralium pogonio interno 

 macula magna oblique alba notato ; rostro et pedibus ro- 



III 



bustis nigris. Long. tot. 8"; rostr. a fr. 5'"; al. 5"4' 

 caud. a has. 4" 4'". 



Of this fine new Swallow there are two specimens in the collec- 

 tion. The other one has the under wing-coverts of a nearly pure 

 white, with only a very faint yellow tinge. Some of the subcaudales 

 show a large black ante-apical spot. It comes near to Hirundo 

 semirufa of Sundevall, but is much larger and differently co- 

 loured. It is fully as large as H. senegalensis, from which it may 

 be distinguished at first sight by the want of the red nuchal collar. 



We propose to name this interesting bird after its able and 

 zealous discoverer, Mr. J. J. Monteiro. 



(3.) Ortyggmetra angolensis, n. sp. 

 Corporis superioris plumis medialiter nigris, late olivaceo-mar- 



