Mr. P. L. Sclater on the Neotropical Pipits. 367 



web. This black patch is much increased in the second rec- 

 trix, occupying more than half the web, and leaving only a 

 smoky white line along the shaft, which increases in breadth 

 towards the tip. There is a slight white tip to the third outer 

 pair, the rest of which, along with the six others, is black, 

 the two middle rectrices being margined with rufous, like the 

 back. 



The following are the principal measurements of the two 

 specimens : — 



Long. tota. Alae. Cauda. Tarsi. Ung. post, 



in. in. in. in. in. 



Mus. P. L. S 5-4 2-9 2-5 0-9 07 



Mus. Vindob 5-0 2-8 2-2 0-2 



In the latter specimen the tail-feathers are not quite fully 

 developed, I think. 



Natterer obtained his specimens of this Anthus during his 

 third journey, in the south of the province of Sao Paulo in 

 July and August 1820, at Pescaria, Rio Verde, and Ytarare. 

 He remarks that it frequents the grassy plains, and likes to 

 run on the roads. 



According to our present state of information, therefore, I 

 am inclined to discriminate six species of Neotropical Pipits 

 (not counting Anthvs ludovicianiis, which only occurs in Gua- 

 temala), somewhat as follows : — 



a. Bill slender ; tail-feathers rounded. 



a. External rectrices smoky ; under surface of body 

 tawny. 



I larger, wing .3'2 \. A. bogotensis. 



( smaller, wing 2-8 2. A. chii. 



h'. External rectrices white ; under surface of body 

 white or yellowish. 



a". Very small, wing 2-5 S. A. rufus. 



h". Larger, wing o"0 to 3'2, 



\ hind claw long and straight 4. ^. coirendera. 



I hind claw short and curved 5. A. furcatus. 



b. Bill stout ; tail-feathers pointed 6. A. natterei-i. 



These characters may seem somewhat undecided perhaps, 

 but not more undecided, I think, than the species themselves 

 to which I have applied them. 



