316 



REMARKS ON THE GENUS SULA. 



tl A Somewhat less advanced bird has the tail feathers still 

 dark brown, like the quills, with white shafts. 



" A younger bird (Bremen Museum) has not only the quills 

 and tail, but also the wing coverts, scapulars, back, mantle, and 

 rump deep brown, as are also the under-wing coverts and tibial 

 plumes. The rest of the plumage white, but the feathers of the 

 occiput and back of neck conspicuously tipped with reddish 

 3 r ellow. The wing coverts and feathers of the mantle exhibit, 

 broader or narrower greyish white tippings, and look therefore 

 chequered. 



" Bill and naked head space dirty fleshy brown ; the culmen 

 deep brown, and the point black ; feet dirty orauge red." 



If we now sum up the evidence, we shall find here also 

 discrepancies. First as to dimensions : — - 



M.T. 

 L. Exp. W. T. B. fr. B. fr. g. Ts. & cl. Mid T. 



3398 67-87 10-95 ... 5 5 1-93 3-58 ... { ^c.^fric^' 



23 14 7 4 1-37 Gould(N.S W.) 



28 5 59 8-5 32 ... 14 3 ... Peale (Pacific.) 



( Schlegal (In- 



14-5-15-2 7 7— 95 3-0— 3-3 ... 11 — 1 19 ... 22— 29^ diau Archi- 



(. pelago.) 



( Scklegel(quite 



15-55 8-2 3-5 ... 1-3 ... 2 48-J young from 



(, Atlantic). 

 ( Finsch and 

 24-1—30 8 15-7 8-59 35 4-12 1-47 ... 2-2 \ Hartl. (South 



C Seas). 

 32 88 16-44 8 77 3-5 ... ... ... 2 74 „ 



14-25 684 3-3 3 94 1-38 ... 229 „ (young.) 



Then as to colours of soft parts : — 



Bill. Facial Skin Pouch. Legs $ Feet. Irides. 



Brisson Red Red Red. 



Linnaeus Black. 



Lesson Kosy, with 



black tip. 

 Gould (ini- Yell o w i s h Bright red- 



mature), fleshy, tip disk orange, 



black. 

 Peale Pale blue. Bright red at Intense black Vermilion, 



base of bill, 

 cheek blue. 



Bonap. ad. Greenish Intense black Red. 



„ jun. Reddish Fleshy 



„ juv. Red. 

 Schlegel(Boie) Light blue Flesh color Flesh color Red. 



lilac. 

 McGilliv r a i , Bluish pink Leaden blue Flesh color. 

 juv. 



ad. Vermilion. Grey. 



Finsch & H. Pale'.blue, red- Pale blue Pale blue Coral red Brown, 



dish at base. 



Forster Dirty blue Pale blue. 



Philippi Bright blue ' Bright blue Carnelian red 



grey. g l- ey. 



Graffe (young) Bluish green, Greenish blue Greenish blue Bluish green Greenish yel- 

 blaekish at low. 



tip. 



