INTRODUCTION. 
lxxx 
Genus THALASSCECA, Reich. Southern Hemisphere. 
Gen. char. — Bill slightly shorter than the tarsus, higher than broad at the base, the commissure a little 
curved. Wings of moderate length, reaching to the end of tail. Tail short, more or less rounded, composed of 
fourteen feathers. Tarsi slender, compressed, reticulated, shorter than the middle toe ; outer toe as long as the 
middle one ; inner toe considerably shorter ; hallux very short, being only observable as a stout, obtuse, subconical 
claw. 
Genus PUITTNUS, Rrisson. Both Hemispheres. 
Gen. char, hill as long as, or shorter than, the head, much compressed, and grooved obliquely on the sides; 
the tip lengthened, arched, suddenly hooked and acute ; the lower mandible somewhat shorter thau the upper, with 
the apical margin and gonvs equally curved with the upper, the latter angulated beneath, and the sides longitudinally 
grooved ; the nostrils basal, elevated above the culmen, opening obliquely in two tubes, placed side by side. Wings 
long, slender, somewhat acute, with the first quill the longest. Tail moderate and rounded, composed of twelve 
feathers. Legs moderate, with the apical part of the tibia naked, lay si compressed and equal in length to the 
middle toe. loes long, the outer equal to the middle one, the inner shortest, and the lateral toes margined 
exteriorly by a narrow membrane. 
Genus ADAMASTOR, Bonaparte. Southern Hemisphere. 
Gen. char. — Bill about three fourths the length of the tarsus, broad and stout at the base, narrowing regularly 
to the strong, very convex, compressed unguis ; nasal tubes rather long, very broad, depressed, but vertically trun- 
cated at their extremity, and with an unusually thin septum. Wings rather short, the primaries broad and stout, 
the second as long as the first. Tail rather short and slightly cuneate. Tarsi shorter than the middle toe 
without its claw, outer toe larger than the middle. 
Genus MAJAQUEUS, Reich. Southern Hemisphere. 
Gen. char. — Bill a little shorter than the head, about equal to the tarsus, stout, compressed, higher than 
broad at the base, the culmen rising immediately from the nostrils ; unguis large, very convex, much hooked, 
commissure unusually curved ; outline of lower mandible straight as far as the unguis ; nasal tubes long, 
elevated laterally, obliquely flattened, carinated along the median line, apically truncated, with a considerable 
emargination ; the nostrils circular. Wings comparatively long. Tail very short and subtruncated, the graduation 
of the lateral feathers being slight. Tarsi greatly abbreviated, being much shorter than the middle toe without 
its claw ; outer toe, without claw, longer than the middle ; tip of inner claw reaching to base of middle one. 
Genus OCEANITES, Keys, et Bias. Almost cosmopolite on the high seas. 
Gen. char. — Bill shorter than the head, slender, weak, the sides much compressed, and slightly grooved, with 
the tip suddenly hooked and acute; the lower mandible shorter than the upper, the tip arched, with the gonys 
hardly angular beneath ; the nostrils elevated above the culmen at its base, tubular, with a single aperture in front. 
Wings long and pointed, with the first quill much longer than the third, and the second the longest. Tail of 
moderate length and even. Legs long, slender, with the naked space of the tibia extensive. Tarsi longer 
than the middle toe, and oereate in front. Toes rather short, the outer toe nearly equal to middle one, and the inner 
the shortest, with the claws rather narrow and pointed. 
Genus PELAGODROMA, Reich. Southern Hemisphere. 
Gen. char. — Differs from Oceanites in having the second quill shorter than the third, the tail furcate, and the 
tarsi scutellated in front, with the nails broad and flattened, and the hallux in the form of a triangular claw. 
Genus GARRODIA, Forbes. Southern Hemisphere. 
Gen. char. — S imilar to Pelagodroma, but with somewhat shorter legs, and having the sternum posteriorly 
entire, instead of being excavated on its margin. 
