1126 MR. C E. HELLMAYR ON TUE 



to r. m. cdhoyularis. Birds from Northern Venezuela (Stui 

 Esteban, Tocuyo, etc.), however, are very difi'erent, being much 

 paler and more greenish brown above, having the throat tinged 

 with pale yellowish, the lower mandible whitish instead of 

 mainly blackish, etc., etc. They agree perfectly with topotypes of 

 P. insularis Allen * from Tobago, and other examples from 

 Trinidad and Bermudez (Cumana), while a series secured by the 

 late H. Whitely on Mount Roraima, Guiana, is intermediate 

 between P. on. mystaceas (of S.E. Brazil and Paraguay) and 

 P. m. insularis. Cfr. Hellmayr, Nov. Zool. xiii. 1906, p. 22. 



According to my views, the range of the vai-ious races of the 

 group is as follows : — 



(a) P. onystaceus mystaceus Vieill. South-eastern Brazil 



from Bahia and Minas southwards to Rio Grande do Sul, 

 Paragviay, and the adjoining province Misiones, Argentine. 



(b) P. onystaceus insularis Allen. Tobago, Trinidad, and North 



coast of Venezuela t, from Cumanji (Bermudez) west to 

 Tocuyo. [Specimens from Mt. Roraima, British Guiana, 

 and from the Orinoco R. (Oaicara), may form yet another 

 race.] 



(c) P. mystaceus alhogularis Scl, Western Ecuador and 



Colombia, Panama, Ohiriqui, and parts of Costa Rica. 

 [East Ecuador and North Peru ?] 



68. RhYNCHOCYCLUS CIISfEREICEPS FLAVOTECTUS Hart. 



\Cyclorliynclviis cinereiceps Sclater, Ibis, i. p. 443 (1859. — 

 Oaxaca, Mexico).] 



Rhynchocyclus megacejihala jlavotectus Hartert, Nov. Zool. ix. 

 p. 608 (1902.— San Javier, N.W. Ecuador). 



Nos. 2250, 2396. 6 S ad. Novita : 8.xi., 12.xii.08.— Wing 63 ; 

 tail 50^, 51; bill 12, 13 mm. 



No. 2046. 6 imm. Noanama : 2.ix.08.— Wing 62 ; tail 51 ; 

 bill 12 mm. 



" Iris brown, feet dark grey, maxilla black, mandible horn- 

 coloured." 



The specimens agree in every respect with the types from San 

 Javier and two other examples from Paramba, N.W. Ecuador, 

 kindly lent by the authorities of the Tring Museum. The species 

 is for the first time recorded from Colombia. P. c. Jlavotecitis, 

 although described as a subspecies of P. megacejihala auct. nee 

 Swains. +, is much more nearly allied to R. cinereiceps, of Central 

 America, in fact its southern representative. In the coloration 

 of the under parts the two birds are perfectly alike ; but 

 P. c. Jlavotectus may be recognized by its much duller and darkec 



* Flatyrhynchus insularis Allen, Bull. Amer. Mus. N. Y. ii. p. 143 (1889.— 

 Tobap:o). 



t P. alhogularis Sclater, Cat. B. xiv. p. 67 (part., specimens d, e : S. Esteban, 

 Venezuela). 



+ Cfr. Hellmayr, VerhaiKll. zool. -hot. Ges. Wicn, liii. 1903, pp. 206-8. 



