NOVITATES ZOOLOOICAE XXIV. 1017. 415 



Ridgway's Rh. hlagesi, described from Maripa in Venezuela, Proc. Biol. 

 Soc. Washington, xix. p. 115, 1906, is apparently a specimen of Rh. polioccphalus 

 sclateri; the wing measurement (52 mm.) is too small for any sidphvrescens. 

 This has already been suggested by Hellmayr in the Record of Ornithological 

 Literature for 1906 in the Archiv fiir Natvrgeschichte. 



5. Rhynchocydu.s sulphurescens berlepschi subsp. nov. 



L)ifl[ers from Rh. s. sulphurescens in its lighter and more yellow underside, 

 from Rh. s. cherriei in its lighter and more yellowish green upperside and much 

 brighter yellow underside. The crown of the head is almost uniform with the 

 back, and shows very httle if any slaty tinge. It is nearest to Rh. s. flavo- 

 olivaceus, but duller throughout and \\ith the throat darker and more greenish. 

 Wings, 67-69 mm. 



Hab. : Northern Venezuela (Cumana, Puerto Cabello) and Trinidad. 



Type: "?" (probably <J) C'aparo, Trinidad, 9. iv. 1902. E. Andre coll. 

 (Tring Museum.) " Iris dark bro\ra. Bill above black, lower mandible dirty 

 white. Feet black." 



Ten from Trinidad, 3 from North Venezuela compared. Named in honour 

 of the late Count Berlepseh, one of the greatest authorities on South American 

 ornithology. 



6. Rhynchocyclus sulphurescens exortivus Bangs. 



Rhynchocydu.s sulphurescens exortivus Bangs, Pruc. Biol. Soc. Washington, xxi. p. 103 (1908 — Santa 

 Marta Mountains, Colombia). 



We have unfortunately no specimens from Santa Marta. Half a dozen 

 Bogota skins in the Tring Museum and a (supposed) $ from Jimenez in W. 

 Colombia (Merwyn G. Palmer coU.) have been named exortivus by Hellmayr. 

 They have the crown of the head slaty-grey, forming a distinct cap, thus differ- 

 ing at a glance from Rh. s. fluvo-olivaceus of Panama, as described by Bangs, 

 and in fact from all the other forms, but we cannot see that these birds are paler 

 generally than R. s. sulphurescens, except on the underside, where this is striking. 



Bangs, Proc. Biol. Soc. Washington, xxiii. p. 72. 1910, described a new 

 form as : 



Rhynchocyclus sulphurescens asemus 



from Jimenez, W. Colombia, Merwyn G. Palmer coll., but the description does 

 not agree with our example from the same place and collection. We suspect 

 that asemus is a form of Rh. cinereiceps, which would then not be a subspecies 

 of sulphurescens, as suggested by Bangs, but a distinct species, occurring 

 together with forms of sulphurescens. 



We have a specimen identified by Hellmayr as Rh. sulphurescens aequa- 

 torialis from West Ecuador which onlj' dift'ers from cinereiceps in having a slightly 

 darker grey head and less extended grey throat. A Peruvian skin named Rh. 

 sulph. peruvianus does not seem to differ from the Ecuadorian specimen. Rh. 

 megacephalus flavotectvs Hart., from N.-W. Ecuador, has been considered as a 

 subspecies of sulphurescens by Berlepseh (Proc. Orn. Congr. 1905, p. 482), but we 

 are convinced that this is a mistake. 



