PR0CELLARINJ2. LESTRIS/ 
331 
of from twelve to sixteen feathers. (Esophagus very wide, 
often enormously dilated, especially at its lower part, stO“ 
mach small, moderately muscular ; intestine of moderate 
length ; coeca rather long ; cloaca oblong or globular. Tra- 
chea simple, with a single pair of inferior laryngeal muscles. 
GENUS 1. LESTRIS, Illiger. JAGER. 
Bill shorter than the head, strong, slightly compressed, 
straight, with the tip curved ; upper mandible with the dor- 
sal line nearly straight, toward the tip decurved, the ridge 
broad and convex, formed by two plates, which overlap the 
nostrils, the sides narrow and convex, the edges sharp and 
inflected, the tip or unguis decurved, compressed, acute ; 
nasal groove long, narrow ; the nostrils in its fore part me- 
dial, lateral, longitudinal, broad before, extremely narrow 
behind, open and pervious ; lower mandible with the angle 
long and narrow, a slight prominence at its extremity, be- 
yond which the dorsal line is slightly concave, the sides 
erect, and slightly convex, the edges sharp and inflected, the 
tip obliquely truncate. Head rather large ; neck of mode- 
rate length; body rather full. Feet of moderate length, 
rather stout; tibia bare at its lower part, and rough all 
round, with small convex scales ; tarsus compressed behind 
and scabrous, anteriorly scutellate ; hind toe extremely 
small and elevated ; fore toes of moderate ‘'«ize, con- 
nected by convex webs, the third toe longest, the fourth 
little shorter. Claws strong, much curved, very acute, com- 
pressed. Plumage full, soft, blended, on the back rather 
compact. Wings very long, rather broad, pointed, the first 
quill longest. Tail of moderate length, or elongated, of 
twelve feathers, of which the middle are longest. Tongue 
broadly channelled above, contracted and induplicate to- 
ward the end, with the point slit ; oesophagus very wide ; 
stomach small, moderately muscular, with the epithelium 
