29 



PEOCELLARIID^. 



ADAMASTOR CINEREUS, {Gm.) Coues [Nos. 67370, 67371]. 



Procellaria cinerea, Gm., Syst. Nat., i, 1788, 563. 

 Puffinus cinereus, (Gm.) Lawr., Birds N. A., 1858, 835. 

 Procellaria hcesiiata, FoRST., Descr. An., ed. Licht., 1844, 208. 

 Puffinus hcesitatus, Lawr., Ann. Lye. Nat. Hist. N. Y., 1353, vi, 5. 

 Adamastor typus, Bp., Consp. Av., ii, 1856, 187. 



Procellaria adamastor, Schlegel, Monog. Proc. Mus. Pays-Bas, 1863, 25. 

 Adamastor cinereus, Coues, Proc. Acad. Nat. Sci. Phila., 1864, 119 (critical). 

 Locality: off Cape Horn. 



PUFFINUS (NECTRIS) NATIVITATIS, Streets, n. sp. [No. 67318]. 



Bill shorter than the head, much shorter thau the tarsus ; size me- 

 dium ; sides compressed, as wide as high at the base ; unguis moderate, 

 much hooked; commissure slightly curved from base to unguis, convexity 

 downward ; the lower margin of the rami of the inferior mandible 

 straight ; unguis concave and slightly deflexed. Nasal tubes about one- 

 fourth of the length of the culmen, broad, depressed, obliquely truncated 

 y anteriorly ; the nostrils oval ; internal septum broad ; culmen sloping 

 downward abruptly from the upper jjart of the nasal tubes, and then rising 

 very gradually toward the unguis. Commissural margins of the upper 

 and lower mandibles inflected. The feathers on the front sweeping 

 across the base of the bill with a gently-rounded outline, gaining the 

 edge of the mandible about three-tenths of an inch from the angle of the 

 mouth ; feathers on the side of the lower mandible do not reach quite 

 as far forward as those on the culmen. Wings of moderate length, and 

 all the primaries graduated, the first the longest; tail rounded, con- 

 taining twelve graduated feathers. Tarsus slender and compressed, 

 equal in length to the middle toe without claw ; outer toe without its 

 claw longer than the middle without the appendage, but including 

 claws the middle toe is the longest; the tip of the claw of the inner toe 

 falling short of the base of the middle claw one-tenth of an inch. 

 The entire coloration of the species sooty-black, without any mixture 

 of gray, except on the chin, where it is very faint; somewhat darker on 

 the head and upper parts, where it is more of a brownish-black ; on the 

 under parts, it is of a rich chocolate hue. Bill black ; tarsus and 

 feet brownish-black, somewhat lighter on their inner aspects. Prim- 

 aries and tail-feathers scarcely darker than the rest of the plumage; 

 shafts brown on the upper surface, those of the primaries with a longi- 



