416 XOVITATES ZOOLOGICAE XXIV. 1917. 



7. Rhynchocydus sulphurescens flavo-olivaceus LawT. 



Rhynchocydus flavo-olivacem Lawrence, Ann. Lye. Xat. Hist. New York, viii. p. 8 (" 1863" — Liou 

 Hill, Panama). Cf. Ridgway, Birds North and Middle America, iv. 391. 



Very light above and below, crown almost uniform with back. 

 Panama. 



9. Note on the distribution of Platyrhynchus coronatus. 



In Nov. ZooL. 1902, p. 607, one of us mentioned Platyrhynchus coronatus 

 Scl. as being found at Lita and Caclij'jacu in N.-W. Ecuador, We find now that 

 these two birds are not typical P. coronatus, described from East Ecuador, and 

 extending to Western Brazil and Guiana, but that they belong to PI. coronatus 

 superciliaris Lawr., described from Panama, or to a new subspecies, closely 

 allied to the latter. Our two West Ecuadorian birds are darker, especially on 

 the chest and sides of breast, but we cannot decide from two specimens whether 

 these differences are constant. 



10. Forms of Dendrocolaptes validus. 



Thanks to the kindness of Lr. Clubb in Liverpool we were able to com- 

 pare the type of Dendrocolaptes midlistrigatus Eyton in the Derby collection, 

 Liverpool Museum. It agrees absolutely with Colombian skins from Bogota 

 collections, and can therefore not have come from Peru, but from Colombia- 

 The skin, as it is now, is in excellent condition, but has been mounted and dis- 

 mounted. The subspecies of Dendrocolaptes validus, now that the identity of 

 muUistrigatus is cleared up (cf. Hellmayr and Seilcrn, Arch. f. Naturg. Ixxviii. 

 1912, p. 117), will therefore have to stand as follows : 



1. Dendrocolaptes validus validus Tsch. 



Central and East Peru, and, according to Hellmayr, Western Brazil, also 

 probably East Ecuador. 



2. D. validus phtgosus Salv. and Godman. 

 British Guiana and Cayenne to N.-E. Brazil. 



3. D. validus nudtistrigatus Eyt. 



Colombia : Bogota collections and Antioquia. Hellmayr, in agreement 

 with other authors, unites with these the form from the Andes of Merida in 

 Venezuela. Three specimens in the Tring Museum, however, show the bars 

 on the abdomen generally narrower and less continuous, more broken up, than 

 in Colombian skins. It would, therefore, seem to be probable that they 

 formed another subspecies, which would have to be called D. validus berlepschi 

 (Mad.). (See Dendrexetastes berlepschi Madarasz, Ann. Mus. Nat. Hungar. i. 

 p. 463, 1903.) 



4. D. validus seilerni subsp. nov. 



Differs — as described by Hellmayr and Seilern — as follows from D. v. 

 muUistrigatus : the throat is less uniform, the feathers being edged with oliva- 



