586 MR. P. L. SCLATER ON THE CAPRIMULGI D.E. [Dec. 13, 



marked species there is a single specimen in the Derby Museum, 

 "purchased of Mr. Warwick " in 1849. It is in a bad state, but is 

 immediately recognizable by the peculiar form of the white termina- 

 tions of the thrte lateral rectrices, the inner edges of which, when 

 the tail is partially expanded, form a line slanting inwards and down- 

 wards towards the centre of the tail. This is well shown in Mr. 

 Cassin's figure (Journ. Acad. Phil. ii. pi. 12). The Derbyan spe- 

 cimen is smaller in dimensions than that described by Mr. Cassiu, 

 measuring "whole length 100, wing 6"6, tail 5*1," and seems to be 

 rather darker in plumage. The skin in my collection, spoken of 

 (anted p. 137) as "probably referable" to this species, belongs to 

 another, apparently undescribed, which I propose to call 



Antrostomtjs ornatus, sp. nov. (PI. XLV.) 



Nigricans rufo et fulvo mixtus, capitis striis longitudinalibus 

 nigris : alis et cauda nigris rufo punctatis, ])rimariis rufo ob- 

 solete transfasciatis ; caudce rectricibus tribus externis fulvo 

 late terminatis, pari secundo et tertio ab extra macula magna 

 ovali, pogonium interhts et exterioris partem vicinam occu- 

 pante, supra alba, subtus fulva, ornatis : rectricibus quatuor 

 mediis dorso concoloribus : subtus dorso concolor, sed prcecipue 

 in pectore imo et ventre magis albicans, crissi plumis fere om- 

 nino fulvis, nigra irregulariter transvittatis : torque jugulari, 

 plumas auriculares utrinque attingente, favido. ^ rectricibus 

 lateralibus cum mediis concoloribus. 

 Long, tota 10 poll. Angl., alae G - 5, caudee 4*5; rostri a rictu lin. 

 dir. 13, tarsi 1*2. 

 Hub. in Brasilia. 



Besides my own female specimen, there is a pair of this species in 

 the British Museum, from the male of which the figure (Plate XLV.) 

 is taken. There is a similar pair in the Paris Museum. 



This species is like A. rutilus, but is very much blacker alto- 

 gether, although, had I not seen several examples of it (as above 

 cited), I should hardly have ventured to separate them. Another 

 point of distinction would seem to be in the large oval spots of the 

 second and third pairs of rectrices (fig. 3, p. 587). These are pure 

 white on the upper surface, and fulvous (like the broad margin which 

 surrounds them) below. This does not seem to be the case in A. 

 rutilus, judging from Herr von Pelzeln's description given above. 



The general form of this species agrees with that of A. rutilus. 

 The rictal bristles are strong and well developed, about nine in number 

 on each side. The wings reach to about 1*2 inch from the end of the 

 tail. The second primary is rather longer than the third and longest, 

 the first being slightly longer than the fourth. The tarsi are feathered 

 above, about three parts of the way down, and naked altogether below. 



Antrostomtjs maculicaudxjs. (PI. XLVI.) 

 Stenopsis maculicaudus, Lawrence, Ann. Lye. N. Y. vii. p. 459. 

 Mr. Lawrence has kindly sent me the typical specimen of this bird 

 also, which I had not previously seen. It is a very distinct species, 



