496 NOVITATES ZOOLOGICAE XXIV. IHI". 



sexes darker on the underside than C. I. intermedins. Unfortunately «e have 

 only one female from Xorth Ecuador of ivhich we could not say for certain that 

 it differs from those of intermedius, though the barring on the abdomen appears 

 to be more sharply defined. We prefer to await more material before deciding 

 about this form. 



Specimens from West Colombia, judging from Hellmayr's note, Proc. Zool. 

 Soc. London, 1911, p. 1157, must be the same as our West Ecuadorian ones. 



4. Cymbilanius liiieatus Jasciatus Ridgw. 



This form, the male of which is very little, the female, however, much darker 

 than that of C. I. intermedins and more resembling that of C. I. lineaius, is 

 restricted to Central America from Nicaragua to Panama. Ridgway (-B. iV. 

 atid Middle Am. v. p. 20) is wrong in extending its range to Peru, and Hellmayr 

 (Proc. Zool. Soc. 1911, p. 1157) is mistaken in stating that birds from West 

 Ecuador arc true fasciatus. 



We have of this form 3 <Jo, 2 $? from Costa Rica and Panama. 



Note on Thamiiophilus naevius auct. 



We learn from Ridgway (5. N. and Middle Amer. v. p. 49) that the correct 

 name of this species is Thamnophilus (Erionotus) punctatus. Gmelin's Lanius 

 naevius of -p. 308 cannot be used, because he had already a Lanius naevius on 

 p. 304, which is evidently a Tityra. Lanius punctatus Shaw, Gen. Zool. vri. pt. 2, 

 p. 327 (1809) is based on Levaillant's " Le Tachet " from Cayenne {Lev. Ois. 

 d'Afriqiie, ii. pi. 77, fig. 1). Therefore the Cayenne form is 



Thamnophilus punctatus punctatus (Shaw). 



Hellmayr (Abh. Bayer. Akad. 2 Kl. xxii. Bd. iii. Abt. pp. 658-660, 1906) states 

 that Th. punct. atrinncha is found in Bogota collections. Our Bogota females, 

 however, have the cro\\n of the head chestnut, if anything a little darker 

 than in $ Th. p. punctatus, and not rusty brown or " russet or mars brown " 

 as Ridgway calls it, lilce the females of Th. p. atrinticha. The underside is slightly 

 more brownish. On the other hand the males seem generally to agree better 

 with those of atrinncha, except that the entire crown is of a uniform black, almost 

 to the bill, the sides of the head are uniform grey as in Th. p. punctatus, without 

 or with very fine white hair-like lines on the ear-coverts, and the superciliary 

 region is uniform, not mottled as in atrinucha. The back of the Bogota form 

 is much like that of atrinncha, i.e. darker, with more black. The bills agree 

 with those of punctatus, while those of atrinucha are larger. We propose to name 

 this intermediate race 



Thamnophilus punctatus interpositus, subsp. nov. 



Type : (J ad., Native Bogota collections, in the Tring Museum. (Ex. Coll. 

 Nehrkorn, typical Bogota preparation). 



Several females from Jimenez, W. Colombia, Palmer coll., in the British 

 Museum are typic&l atrinncha. Hellmayr, Proc. Zool. Soc. 1911, p. 1158, also 

 affirms this. Two Bogota specimens in the British Museum fully agree with ours. 



Th. albiventris, at least what we call albiventris from West Colombia and 



