°i9i3 Clabk, Anatomical Notes. 265 



Pterylosis. The general pterylosis of Chlorophonia deserves 

 comment because of the noticeable width of the tracts and the 

 density of their feathering. This is particularly true of the upper 

 cervical tract. The dorsal trad ('saddle') is nol as broadly 

 rhombic as in mosl oscines bu1 the outer angles are rounded. 

 The posterior end of the 'saddle' is almosl completely separated 

 from the remainder of the dorsal tract, which is at first narrow and 

 with few feathers bu1 becomes broad and well-feathered at the oil- 

 gland. The sternal tracts are abruptly contracted where they pass 

 into the ventrals. There are nine primaries and nine secondaries 

 in the wing; the sixth, seventh and eighth primaries are nearly 

 equal, the seventh a trifle the longest perhaps; the ninth is next, 

 with the fifth, fourth, third, second and first in regular succession. 



There are twelve reel rices of approximately equal length, though 



the outer ones arc of course (since the tail is nearly square-cut) 



really the Ioiil 



Alimentary ('until. The stomach is small hut quite distinct. 

 One can distinguish a proventriculus about six mm. long and a 

 gizzard of about the same length. The latter has thin walls but 

 the inner surface is hard and corrugated, so there is no reason for 

 refusing to call it a gizzard. Forbes states (P. Z. S. London,1880, 

 p. 145) that in Chlorophonia viridis there is "the same non-develop- 

 ment of a, gizzard " as in Euphonia. It is curious that there should 

 be a noticeable difference on this point within the limits of a single 

 genus, hut certainly in Chlorophonia callophrys the gizzard is far 

 better developed than in Euphonia. The intestine in Chlorophonia 

 is extraordinarily long; in the specimen before me it measures 340 

 nun. or more than '2\ times the total length of the bird. Naturally 

 in its arrangement within the body cavity we find two more folds 

 than is usual among tanagers. The stomach contains seeds and 

 indeterminable vegetable matter and remains of at least one insect. 



Palatine Region. The bony palate is remarkahle for the very 

 short palatine processes. They are as short and hlunt or rounded 

 as in many Mniotiltida-, so that the palate is not at all tanagrine 

 in appearance. There is no secondary palatine process and the 

 maxillo-palatine I. one show no peculiarities. The vomer is notice- 

 ably broad and thick, with the anterior margin not deeply notched. 



Sternum. There is no t race of the osseous bridge nor of foramina 



