iSgS J Richmond, iWw Species of Gytnnosiinops. '?2 7 



" At Camp Albert, on the Truando, before reaching the Cordil- 

 leras, one specimen only seen, which was shot ; it was very shy 

 and seemed to be a stranger." ' 



In a later paper Cassin refers to both skins, and writes of the 

 male as the "younger" specimen, differing from the adult [the 

 female] in having the '' sides purplish brown " but otherwise like 

 the adult. (Proc. Acad. Nat. Sci. Phil., 1S67, 71.) 



The Truando bird of Cassin's first paper, which is the basis 

 of the extension of range of G. gualimoziiius to the Isthmus 

 of Panama, is a new species, in some respects intermediate 

 between that species and G. montezmncc^ but otherwise quite 

 different. The female of Cassin's second paper is typical guati- 

 moziniis, and was collected at Turbo, a small village on the Gulf 

 of Uraba, on the Atlantic side of the Isthmus. 



The new bird may be briefly described as follows : 



GymnostinOps cassini, new species. Cassin's Oropendola. 



Type: U. S. Nat. Mus., No. 17S47, $ adult, "Camp Albert," Truando 

 River, Colombia, Dr. A. Schott.- Original No. 162. 



Similar to G. montczuma:, but chestnut markings darker; crest feathers 

 vei-y much longer and almost filiform ; base of culmen much wider. 

 Under parts and thighs dull black; sides of bodj dark chestnut. Bill 

 black, tip whitish (in dried specimen) for one inch ; a line bordering base 

 of culmen and extending half wav to nostrils also whitish. The median 

 pair of tail-feathers fall short of the outer ones by about three quarters 

 of an inch, against two inches in G- tnontezumcs. 



Wing, 10.60 inches; tail, 7.S5 ; culmen, 3.35; depth of bill at base, 1.30; 

 width of culmen at base, .82 (.55-.60 in G. niontezztmcc') ; tarsus, 2.40; 

 length of crest a trifle over three inches. 



In size, length of crest, extent of light color on bill, and width 

 of culmen at base, G. cassini stands first. It is intermediate in 

 general color of plumage, and of thighs, and in the extension of 

 the yelloAV tail-feathers beyond the black ones. 



ifbid., 139. 



-Cassin says the collection was made by Wm. S. and J. C. Wood of Phila- 

 delphia, but in the museum register and on the labels of specimens the whole 

 series is credited to Dr. A. Schott. 



