of the Estancia Sta. Elena. 317 



referable to Hapalocercus. I believe it to be unclescribed, 

 and Graf von Berlepsch, to whom I have shown it, is of the 

 same opinion. 



I propose to call it after its energetic discoverer : 



Hapalocercus hollandi, sp. nov. 

 Supra olivaceus, pilei plumis cristatis nigris flavicante mixtis, 

 striga superciliari flavicante ; alis caudaque fuscis colore 

 pallidiore limbatis ; illarura tectricibus flavido termi- 

 natis : subtus pallide sulphureo-flavus, ventre dilntiore : 

 rostro superiore nigricante, inferiore albicante ; pedibus 

 nigricantibus. Long, tota 4*0, alue \'7 , caudse \'7 , 

 rostri a rictu 4-*75 (poll. Angl.). 

 Hab. Argentina centr. ad prsedium S. Helense. 

 This little Tvrant is most like H. acutipennis (Scl. Cat. B. 

 xiv. p. 93), but is at once distinguishable by its striped and. 

 crested head, Inch reminds one rather of a Serphophaga. 

 The fourth primary is attenuated and rather shorter than 

 the third and fifth. The single specimen (obtained at Sta. 

 Elena, Jan. 15th, 1895) is a female, so the wing-structure 

 may be different in the male. 



The species will go into the second section of my synopsis, 

 with the under-surface yellow. It differs conspicuously 

 from the two species there given in its striped and crested 

 head. 



I have written to Mr. Holland for further specimens and 

 more information concerning this interesting species.] 



7. Antrostomus parvulus (Arg. Orn. ii. p. 14). 



A female. I fancy this species breeds here, but its habits 

 are hard to follow. 



8. Hydropsalis furcifera (Arg. Orn. ii. p. 15). 



Rare. A pair bred in a small monte of willows, but I did 

 not discover them until the young were hatched, and then I 

 waited until these were full-grown before shooting the 

 specimen. This year I hope to obtain its eggs. It is easily 

 flushed during daytime, and if much disturbed becomes very 

 shy. 



2a2 



