142 PROCEEDINGS OF THE ACADEJIY OF 



mucli hooked, the outline of the iingiiis of the lower raanrlihle concave, de- 

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

 truncated ; in length usually a fourth of cuhnen ; the iiiteina?al 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 unnsually stout 

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

 Very large ; fuliginous, with peculiar facial markings. 



1. M. ^QUiNOCTiALis Reicli. 



Pr. cequin. L. Priqfinus cequin. Homb. et Jacq. Fr. nigra, Forst. Puff, 

 capits bonce-spei, Briss. 

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



2. M. CONPPICILLATUS Bp. 



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

 Larger : bill more robust ; its unguis bluish black ; tarsus 2^ ; 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. ciNEREns Coues. 



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

 Keys, et Bias, quae Puff. Kukiii, Boie ; nee Aud., Mitt, qnse P^ijff. major, 

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

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

 ton, quae Astrelata diaholica) = Pujinus Juesitata, 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 aud claw 2*90. 



4. A. GELiDus Coues. 



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

 fiaptr, 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. SERICEUS 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 Ncctris, but tail unusually long aud cuneiform, being nearly 

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



6. T. srHENUKUS Bp. 



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

 15 to 10 inches, wings about 11, bill 1*60. 



7. T. CHLORORHYNCHnS Bp. 



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

 in sphenurus, a little larger than thai species, but the wing usually shorter, 

 (^ inch or more.) 



[April, 



