368 Bulletin American Museum of Natural History. [Vol. XXXVI, 



eight males from Trinidad, but the differences are bridged by individual 

 variation and this small series confirms Hellmayr's opinion (Nov. ZooL, 

 1906, p. 30) that T. d. fraterculus Berl. & Hart, is not separable. 

 VUlavicencio, 7. 



(1916) Thamnophilus radiatus albicans La}r. 



Thamnophilus albicans Lapk., Rev. ZooL, 1844, p. 82 ("Colombie"; I suggest 

 Honda, alt. 600 ft.). 



We found this form only in the Magdalena Valley. At the eastern 

 base of the Eastern Andes it appears to be replaced by T. doliatus. The 

 female is not barred below as stated by Sclater (Cat. Bds. B. M., XV, p. 

 210) but, as might be expected, closely resembles the female of T. radiatus. 



Chicoral, 3; Honda and vicinity, 7; Puerto Berrio, 3; Malena, 4; 

 Nare, 1. 



(1917) Thamnophilus tenuipunctatus Lafr. 



Thamnophilus tenuepuntatus {sic) Lapb., Rev. Zool., 1853, p. 339 ("Anolaima," 

 w. slope E. Andes, alt. 4600 ft.). 



I refer to this species three males and two females from Villavicencio. 

 The females have the throat striped, the rest of the underparts distinctly 

 barred with black and white, the black bars being somewhat narrower, 

 the white bars wider than in the male. The upperparts are rufous-chest- 

 nut immarked except for a slight extension of the markings of the side of 

 the neck on to the nape. They thus resemble the females of multistriatus 

 but are more heavily barred with black below. 



Thamnophilus tenuifasciatus Lawr. (Ann. N. Y. Lye, VIII, 1867, p. 

 468) based on a male from Napo (Type No. 43396, A. M. N. H.) is synony- 

 mized by Sclater (Cat. Bds. B. M. XV, p. 211) with T. multistriatus. It 

 has, however, the cap black, unmarked, and is apparently a representative 

 of T. tenuipunctatus, from which it differs in being larger (cf , wing, 75 

 mm. as compared with 70 mm. in tenuipunctatus) and in having the black 

 bars wider and the white ones above less broken, the bands on the tail more 

 complete. I have no specimens of T. berlepscM Tacz. of Peru, which 

 appears to differ substantially from tenuifasciatus {cf. Tacz. Orn. du Perou, 

 II, p. 24). 



(1920) Thamnophilus multistriatus Lafr. 



Thamnophilus multistriatus Lafb., Rev. Zool., 1844, p. 82 ("Colombia"; I 

 suggest Fusugasugd, alt. 6000 ft.); Wyatt, Ibis, 1871, p. 331 (Ocana); Scl. & Salv., 

 P. Z.S., 1879, p. 624 (Concordia; MedeUin); Stone, Proc. Acad. N. S. Phila., 1899, 

 p. 306 ("Antioquia"). 



