of the Loiver PUcoinayo. 139 



and every now and then gliding rapidly down endeavouring to 

 catch the fish as they came to the surface. Occasionally 

 it managed to catch a fish, but most of its efforts were un- 

 successful. 



92. CeRYLE AMERICANA. (Oj). cit. '\\. p. 27.) 



(No. 48, (J .) Abundant. Frequently to be seen perched 

 on branches by tlie sides of the river, uttering a sharp " tick " 

 at intervals. Occasionally they are heard to produce a sub- 

 dued but very high-pitched whistle — one prolonged note — ■ 

 another bird answering. I also observed C. americana fishing 

 over a laguna in the manner mentioned of C. amazona; but 

 it was even less successful than its larger relative, for I did 

 not see it catch a fish, though I watched it for some time. 



93. Trogon surucura. {Op. cit. ii. p. 29.) 



(No. 52, c? •) Near Fortin Nueve. April 10th, 1890. 

 Uncommon ; occasionally met with in the thick forests — 

 generally sitting motionless upon a branch. 



/- 94. Crotophaga ani. [Op. cit. ii. p. 31.) 



Very abundant in all places along the Pileomayo, but 

 especially where there is open brushwood. They frequently 

 utter a clear piping cry, something like that of the Curlew. 



95. Crotophaga major, Linn. : Shelley, Cat. B. xix. p. 428. 



(No. 203, (^; 205, ? .) Fortin Page. November 11th, 

 1890. Toba, " Tanrai." 



Uncommon. Seen only in midsummer on the Pileomayo. 

 Utters a short cry " eh " resembling that or Busarelhis nigri- 

 coUis; also a series of rapidly uttered, somewhat whistle-like 

 sounds. 



[Not included in 'Argentine Ornithology,^ but already re- 

 corded from Paraguay by Azara {Anno guazu, no. 261) and 

 by V. Berlepsch— (/: J. f.' O. 188/, p. 23.— P. L. S.] 



90. GuiRA piririgua. {Op. cit. ii. p. 32.) 



(No. 164, S; 1^5, $ .) Fortin Page. August 8th, 1890. 



Very common. 



~f97. DiPLOPTERUs N.Evius. {Op. cit. ii. p. 35.) 



(No. 358, ^ juv.) Fortin Donovan. January 16th, 1891. 

 Toba, " Wochen.'' 



