5S8 MR. P. E. SC LATER ON THE CAPRIMULGID.E. [^ ec> '^> 



of the terminal white tail-markings, and the presence of several in- 

 distinct rufous bands across the rectrices, which, however, are clearly 

 signs of immaturity. There are also five rufous spots on the inner 

 web of the outer primary, instead of two as in Mr. Lawrence's ex- 

 ample ; but these may likewise disappear with age. In the British 

 Museum is a skin which I refer to the female of this same species. 

 In this the terminal white tail-bar is altogether absent. Mr. Law- 

 rence's example of this species is stated to have been obtained at 

 Para by Mr. v. Schulte Buckow. Those in the British Museum 

 and in the Derby Museum are both probably from Bolivia. In this 

 species, as already noted by Mr. Lawrence, the first primary is as 

 long as, or in fact rather longer than, the second. In every other 

 American Antrostomus and Stenopsis in my collection the first pri- 

 mary is shorter than the second*. 



Genus Stenopsis. 

 Stenopsis cayanensis, p. 140. 



I have now undoubted Bogota skins of this species, and have also 

 seen a specimen in the Paris Museum collected in Martinique by 

 Bousseau ; so that these two localities may be added to the list given 

 (anted, p. 140). 



I have already expressed my doubt (/. c.) whether Azara's Ibiyau 

 alas y cola blancas has not been wrongly referred to this species. 

 These doubts have been solved for me by Herr von Pelzeln, who has 

 kindly furnished me with the following notes on the Paraguayan 

 species : — 



Stenopsis candicans, Pelzeln. 



Ibiyau alas y cola blancas, Azara, Pax. no. 314 ; unde 

 Caprimulyus leucurus, Vieill. Nouv. Diet. x. 246. 

 C. candicans, Natt. in Mus. Vindob. (sp. 530). 



S. corpore supra, tectricibus alarum superioribus minoribus et 

 mediis albescenti-griseis, hinc illinc ochraceo lavatis, minulis- 

 sime niyro marmoratis ; capite stria nigrescente longitudinali 

 et sca-pularibus striis nigris et maculis ferrugineis ornatis : 

 alarum tectricibus majoribus et remigibus seenndariis (exceptis 

 tribiis ultimis et aliquorum marginibus) albis : primariis ad 

 basin albis, dein nigris, tertio longissimo : stria a mandibulce 

 basi ad aures ducta albida ; loris, regione auriculari, gula, 

 colli lateribus et pectore castaneis, nigro undulatis ; ultimis 

 striis longitudinalibus ochraceis insignitis ; gastrceo reliquo, 

 tectricibus alarum inferioribus et caudce truncated rectricibus 

 laterulibus albis ; his passim ochraceo marginatis. 



Long, tota 8i", alee 5|", caudse 4". 



* Since this paper was read, I have received from Prof. Nation, of Lima, a 

 skin of what I believe to be Capr. aquicaudatus, Peale. It proves to be quite 

 distinct from Antrostomus par vul us, G-ould, as I had anticipated (antca, p. 138). 

 T shall point out the difference in a communication which I am preparing on 

 Prof. Nation's collection. 



