176 CLANGULA CHRYSOPTHALMA. 



convex ; the sides erect at the base, gradually sloped and 

 convex ; the edges marginatc or grooved, soft, projecting a 

 little beyond the lamellse, of -vvliich there are about thirty 

 above ; the nasal sinus large, elliptical, sub-medial, close to 

 the ridge ; the lower mandible with the intercrural space 

 very long, of moderate Avidth, and bare ; the crura a little 

 rearcuate at first, then nearly straight ; the edges with about 

 thirty-five external and forty-five upper lamellae ; the unguis 

 obovate. 



The nostrils are Knear-oblong, two-and-a-half-twelfths in 

 length, medial; the eyes of moderate size. The legs are 

 very short, and placed rather far be'iind ; the tibia bare to a 

 very small extent ; the tarsus compressed, reticulate, but 

 with an anterior series of twenty-six medial and nine outer 

 small scutella. The hind toe is very slender, with fifteen 

 scutella, and a lobiform thick scaly membrane ; the anterior 

 toes long, the inner with forty-two scutella, and a two-lobed 

 free membrane ; the third nearly double the length of the 

 tarsus, with forty-six scutella ; the fourth almost of the 

 same length, with sixty scutella ; the interdigital membranes 

 full, the outer a little emarginate. The claAvs are small, 

 slender, compressed, little arched, rather blunt, the third 

 with its inner edge a little dilated. 



The plumage is dense, soft, and blended. The feathers 

 on the cheeks and fore part of the head very small, oblong, 

 on the upper and hind part of the head, as well as on the 

 hind part and sides of the upper neck, linear, elongated ; on 

 the fore part and middle of the neck short ; on the body 

 moderate, oblong, and rounded ; on the sides elongated and 

 pointed; the scapulars also long, but obtuse. The wings 

 are short, convex, narrow, and pointed ; the outer primaries 

 very narrow, the second longest, the first scarcely shorter, 

 the rest rapidly graduated ; the secondaries incurved and 

 rounded, the inner elongated. The tail is short, graduated, 

 of sixteen stiffish rounded feathers, of which the medial 

 exceed the lateral by an inch and a half 



The bill is black ; the iris yellow ; the feet orange-yellow, 

 with the webs dusky, the claws brownish-black. The head 

 and upper part of the neck are glossy deep green, when seen 



