398 



THE TUBE-NOSED SWIMMERS — TUBINARES. 



I> 



: ; a 



color i» uiitiiely lost along the niiles uinler the wiiif^s and at the beginning of the unilcr tail-coverts ; 

 while forward, on the lower luut of the breast, and over the ventral region generally, the feathers 

 are sjMjtted, l)arred, or finely verniiculated, in varying shades of color. The sides of the head hack- 

 ward to behind the eye (where the band of color already described begins) arc essentially white, 

 but the feathers immediately bidow the eye are obscundy handed, and there is a narrow but dis- 

 tinct transocular fascia of a dark color, which barely interrupts a broad and pure white superciliary 

 line passing from the bill to a short distance behind the eye. The forehead and crown are much 

 mixed with white. On the forehead the white forms a brcjad edging to the feathers, and extending 

 more narrowly around their tips, conlines the plumbeous ashy to triangular central patches ; but 

 toward the crown it becomes restricted to the edges alone, and when the occiput is reached gives 

 way entirely to the uniform plumljeous of that part. 



" The jieculiar c(dor and marking of the wings, alike in both si)ecimens, has already been so 

 well treated by Dr. Coues that I will save repitating these details by referring the reader to his 

 description, previously quoted in the present article. But in this connection it is necessary to call 

 attention to two points which are not there noticed. The first is, that the secondaries, as well as 

 the primaries, have the white areas on their inner webs. The second, that each successive primary, 

 beginning with the first, is lighter and more plumbeous than the preceding one ; but with the firet 

 secondary, the color abruptly darkens again, becoming on the exposed portion nearly black, and 

 continuing uniformly so to the tertials, which are of an equally dark cast. 



" The bill is black ; the tarsus, obscure flesh-color with a bluish tinge. The basal third of toes, 

 with contained webs, pale yellowish ; the terminal portion black. 



"Dimensions : Bill (ciiord of culnien), 1.03 inches ; height at base, .46, width, .42 ; tarsus, 

 1.37 ; outer toe and claw, 1.G5 ; middle, 1.70 ; inner, 1.43 ; wing, 9.88 ; tail, 3.95 ; the graduation 

 of the rectrices, .90." 



GeXUS BULWERIA, BOXAI'ARTE. 



DidwcrUi, r.oxAi'. Cat. Met. Ucc. I'^ur. 1842, 81 (type, Proccllaria Buhvcri, Jaiid. & Selby) ; Consp. 

 II. 185(), 1U4. 



Chaii. Very similar to the smaller species of CEstrdata ((E. Conki, etc.), but tail longer and 

 more graduated, bill less compressed, and feet smaller. Myological formula said to be very 

 different. 



Tiie type of this species is so much like the smaller CEstrclntm (as, for example, (E. Cooici) that 

 we should hesitate to sei)anile it generically, were it not for important anatt)mical differences which 

 are said to exist. The late Professor Forbes says (Zool. " Challenger " Expedition, Vol. IV. p. (iO) 

 that " Ihtlurria is a peculiar form, with no very close ally, and nuist be regarded as a highly 

 specialized form, as shown by its myological formula . . . and its peculiar cuneate tail." The tail 

 is decidedly more graduated than in (Estrclafa Coold (which anumg the true (Estrelatm api)roaches 

 ino.st nearly in this ami other features), and the feet are relatively snudler ; but beyond these 

 differences we are unable to appreciate any external characters of importance. 



Besides 11. liulweri there is said to be another species, the B. MaeijiUivraiji, (JuAY, from tint 

 Fiji Islands.' 



Bulweria Bulwerii. 



I 



BVLWEB'S PETBEL. 



Proccllaria Bulwerii, Jahd. & SF.Lnv, lllustr. Orii. pi. 65. 



T/uilasnidrotna liulweri, Gori.D, 15. Kur. pi. 448. — Keys. & Blas. Wirb. Eur. 93, — Scni.Ko. Iti'v. 



Crit. 134. — Macoili,. Man. II. 264. — GiiAY, Gon. B. III. 648; Cat. Brit. B. 1863 224.— 



Ne\vton, Man. N. H. Greetd. 1875, 108. 

 Alstrelala Bulwcri, Coves, Pp. PhikJ. Acad. 1866, 158. 

 (Estrclata Bulweri, Uinow. Pr. U. S. Nat. Mus. 1880, 209; Norn. N. Am. B, 1881, no. 718.— 



Coues, 2d Check List, 1882, no. 820. 



* Tluilassidroma (Bulweria) Macgillivrayi, Okay, Cat. B. Isl. Pacif. 1859, 56. 



