bulwer's petrel. 441 



twyth (Cardigan) end Nov. or beginning Dec, 1889 (J. E. Harting, 

 ZooL, 1890, p. 454 ; Salvin, Ibis, 1891, p. 411). 

 Distribution. — Abroad. — Western and southern Pacific Ocean, 

 said to breed New Hebrides, Tanna, Erromanga, and Fiji Is. 



Genus BULWERIA Bp. 



Bulweria Bonaparte, Nuovi Ann. Sci. Nat. (Bologna), vni, p. 428 

 (1843 — Monotype B. bulwerii). 



Of uniform slate -coloured appearance. Very closely allied to 

 Pterodroma, but considerably smaller than most of latter, feet 

 weaker, tail comparatively longer. Nasal openings on top of culmen 

 forming two quite separate round holes, this portion somewhat 

 soft. One species and another of which only the type is known. 



BULWERIA BULWERII 



348. Bulweria bulwerii (Jard. and Selby)— BULWER'S PETREL. 



Procellaria bulwerii Jardine and Selby, Illustr. Orn., 11, pi. 65 and 

 text (1828 — Madeira or near by). 



Bulweria columbina (Moquin-Tandon), Yarrell, rv, p. 34 ; B. bulweri 

 (Jardine and Selby), Saunders, p. 749. 



Description. — Adult male and female. Winter and summer. — 



Whole upper-parts brown-black ; lores, cheeks and especially chin 



and upper - throat with 



more or less ash-grey ^— ~~~"~ 



tinge ; rest of under-parts , ^ 



dark sooty - brown ; tail / 



brown - black ; wing - fea- y~zL () 



thers same but inner webs /^$^~~*^ 



paler and browner, secon- vt^-^^^^^^^' 



daries with very narrow x \ J_ 



and inconspicuous greyish \ I 



edgings ; greater wing - 



coverts except innermost 



grey- brown forming a pale 



band across wing ; rest of wing-coverts brown-black as upper-parts. 



No moulting birds examined. 



Nestling. — 1st down long and thick except on lores, round 

 eyes and chin where it is scanty, dark sooty-brown with a very 

 slight greyish tinge and slightly paler on under-parts than on 

 upper -parts. (One only seen : Tenerife.) 



Measurements and structure. — £ wing 190-204 (one 211) mm., 

 tail 104-114, tarsus 25-29, middle toe with claw 27-32, bill from 

 feathers 21-23 (15 measured : Atlantic Is.). $ wing 194-205, 

 bill 20-22. Primaries : 1st pointed, about three -fourths primary- 

 coverts, 2nd longest, 3rd as long or 1-4 mm. shorter, 4th 5-12 

 shorter, 5th 18-23 shorter, 6th 33-40 shorter ; 2nd with considerably 

 narrower web than rest. Outer secondaries very short and square 



Bulwer's Petrel (Bulweria bulwerii). 



