A8 CALIFORNIA ACADEMY OF SCIENCES [Proc. 4tH Serr. 
breeding stations alone will determine the precise nature of 
the variations. 
In one specimen the first primary of one wing is longer 
than the second primary, but in twelve other specimens the 
first primary (fully grown) is equal to or shorter than the 
second. 
Mr. T. Iredale has apparently shown that Priun Lacépéde 
is indeterminable, and in consequence has revived Pachyptila 
Illiger,* which I have used in the present connection. 
MEASUREMENTS (in millimeters) 
Upper Middle 
No. Locality 
Sex|Wing| Tail | Cul-|_Mandible_|Tar-| Toe 
men | Depth| Width 
n 
PASS OtagowiNe Zn eli aes ee 5 : ; 
AS tM Ols| Chathanaelsye aera. 9 4 6 
LOIS Otacon Ne Zeon cae fof ) : 4 
124679 3}Hen and ChickensIs., N.Z.| .2| 10. ‘ 
24356 Cape Farewell, N. Z....) co : q 50) ne 
24357 7 * ss Ge msl (zoe 53821 12) 2130 13625 
24358 7|Well, West Coast, N. Z..| a 48 |10.9|27.8) 36.3 
ADAG Se OtasoneNe Cryo oe icf .6| 8.9] 11.5 |32.4| 42.5 
208736 *|Montevideo, Uruguay. ..| @ .5| 8.21/11 134.6) 38 
2LOT23% i Get Na Palio 8 |10.5)/34.6} 42 
68926"iKerguelen Tse ose of .4,10.2}12.8/32 | 38 
24354 7 Pitt I., Chatham Is...... Q .7| 14.2] 21.5|34 | 40.5 
AStis Chathamelicuan ae ase Q lol AMES) Ser 
24359 4\Nelsoney NewZe oem. epee Q US| ee Oe S29 sl Sie 
124680 *|Hen and Chickens Is., N.Z.| — .9}10 |12.5/31 | 34.9 
1594854 South Africas) ive et oe al ait WD a 2 ZO S35 
PUFFININZE: SHEARWATERS AND PETRELS 
Key to the Species 
Nostrils separated by a thin partition 
Hind claw very large; plumage white................ Pagodroma nivea 
Hind claw small; plumage of upper parts not white 
Breast and abdomen dark; tail more than half as long as wing 
Greater wing-coverts grayish brown, forming a distinct 
[DY RMR RRR eR Ree A iS Cd A Boece Bulweria bulwert 
Greater wing-coverts sooty brown, not forming a distinct __ ’ 
ADEA EAE IR TAD Vout 1 Caan Mate Ue RSI NaNeaT Ode RUST net Tau B. macgillivrayt 
Breast and abdomen white 
Upper tail-coverts not white 
Jugulum white, sometimes partially obscured by gray 
Lower tail-coverts white 
Under wing-coverts inwardly more or less white 
Wing under 10 in. (254 mm.) 
Axillaries iblacky setae saeeray cee Pterodroma axillaris 
1 Austral Avian Record, v. 2, pp. 25-27. 
2 Carnegie Museum. 
8U. S. National Museum. 
