142 PROCEEDINGS OF THE ACADEMY OP 



much hooked, the outline of the unguis of the lower mandible concave, de- 

 curved. Nasal tubes short, broad, flattened, apically usually very obliquely 

 truncated ; in length usually a fourth of culmen ; the internasal septum 

 broad. In color either entirely fuliginous, or cinereous, or brown above and 

 white beneath ; never glaucous or bluish, or with parti-colored primaries. 

 " Shearwaters." 



I. MAJAQUEUS Reich. 



The very short tail only a fifth of the total length. Bill unusually stout 

 for this section ; nasal tubes approaching in character those of Fulmarese. 

 Very large ; fuliginous, with peculiar facial markings. 



1. M. jequinoctialis Reich. 



Pr. cequin. L. Priojinus cequin. Homb. et Jacq. P r. nigra, Forst. Puff, 

 capitis boace-spei, Briss. 

 Tarsus 2]- inches ; ungues of bill yellow ; a submental white spot. 



2. M. CONSPICILLATUS Bp. 



Proc. conspicillatus, Gould. Pr. larvata, Less. 

 Larger : bill more robust ; its unguis bluish black ; tarsus 2i ; usually a 

 white submental spot ; a lateral stripe on sides of head, and a transverse one 

 across the vertex before the eyes. 



II. ADAMASTOR Bp. 

 Bill and nasal tubes identical with those of Majaqueus. Tarsus much less 

 than middle toe without claw. Tail very short, much graduated. Bi-color ; 

 above cinereous, below white. 



3. A. cinereus Coues. 



Proc. cinerea, Gm. (non Cuv., Kuhl., Temm., Schleg., Degl., Schmz., 

 Kevs. et Bias, quse Puff. Kuhlii, Boie ; nee Aud., Mitt, quas Puff, major, 

 Fab.) Puff, cinereus, Lawrence, 1858. Adamastor cinereus, Coues, 

 1864. Proc. hcesitata, Forst., Gould, Reich, (non Kuhl, Temm., New- 

 ton, quffl Astrelata diabolica) = Puffinus hasitata, Lawr., 1853. Puff. 

 Kuhlii, Cass. [1862] nee Boie. Proc. adamastor, Schleg. Adam, typus, 

 Bp. 

 Bill yellow, nasal tubes, culmen and sulcus on lower mandible black ; above 



with under surface of wings and tail cinereous ; below white ; 19 inches long ; 



bill 1-80, wing 13-00, tail 5-75, tarsus 2-40, middle toe and claw 2-90. 



4. A. GELmrs Coues. 



Proc. gelida, Gm., Lath., Vieill. Proc. flavirostris, Gould. Adamastor 



flavir, Bp. . 



Above brown, with paler edges to the feathers ; wings and tail deep black- 

 ish brown ; below, including the under surfaces of wing and tail, white, the 

 feathers of the former with a brown longitudinal streak ; bill yellow, its tip 

 dark ; 19 inches long, wing 15, tail 6-50, middle toe and claw 3-15. 



5. A. sekiceus Bp. 



Puff, sericeus, Lesson. 

 Bill black ; above grayish ash, deeper on the wing coverts ; below white ; 

 15 inches long, wing 11-50, tail 5, tarsus 1-75, middle toe 1-33. 



III. THIELLUS Gloger. 

 Generally like Nectris, but tail unusually long and cuneiform, being nearly 

 or quite half as long as the wing from the carpus. 



6. T. spuekurus Bp. 



Bill flash color, tinged with brown, darker on culmen and unguis. Length 

 15 to 16 inches, wings about 11, bill 1-60. 



7. T. CHL0R0RHYNCHDS Bp. 



Bill greenish orange, black on culmen and at tip. Bill 1-85 ; stouter than 

 in sphemirus, a little larger than that species, but the wing usually shorter, 

 (* inch or more.) [Ap ^ 



