52 CALIFORNIA ACADEMY OF SCIENCES 
MEASUREMENTS (in millimeters) 
[Proc. 4tH Serr. 
No. Locality 
23422 1|Tenerife I., Canary Tis: 
23424 1 
23425 ef te 
23428 1\Santa Ursula, Tenerife ii 
(Chhieingdieyeouas gaddadoc 
23433 1/Tenerife I., Canary Is. . 
189409 2] Necker I., Hawaiian Arch. 
189411 2 is 
189412 2 6c 66 v3 
189413 2 66 6é (vi 
5653 Bird I. , Hawaiian Arch.. 
56543] * 
5655 3 6é 66 66 
5657 3|Necker I., Hawaiian Arch. 
5658 3 oa 
5659 3 66 66 66 
23423 | Tenerife I., Canary Is.. 
23426 } ae Bate Tenerife 1 
23429 } Sey inane Tenerife I., 
Eanaryals aye ua eineter 
23430 )|Santa Gaal, Tenerife I., 
Canarylsue ine sa see nae 
23431 1)Santa Ursula, Tenerife Te 
CanaryiIssye ees 
23432 1|\Santa ies ences Te: 
Canary ise eae nee: 
189407 2}Necker I., Hawaiian Arch. 
189408 2 ss 
189410 2 6é 6é 6é 
5656 3|Bird I., Hawaiian Arch.... 
AQ®% 
pecan a 
Wing] Tail 
00 tn Wo 00 tn = 60 
Sis OS eS. eS 
TVs ~700 COO TOO 71000000 SII 
Cul- 
men 
tos 
Upper 
Mandible 
Depth} Width 
00 QAnohuhiun 
uni Te 
(o<} 
Middle 
Tar- | Toe 
sus | and 
Claw 
.5|28 30.5 
.1}26.1} 29.8 
.3|26 29 
.7|26.1} 31.5 
.5|26.1| 30.6 
.5|27.8| 29.8 
24 27.6 
.9/26.3} 30.9 
.3|26.6] 30.8 
.4|26.1| 30.6 
.4|26.8] 30 
.5|27 Sil 7 
.5|24.9| 29.4 
.2|26.7| 28.8 
.8/26.3] 29 
27.3} 30 
7|25.9) 29. 
26 | 31.2 
28.2) 31 
7|27.2) 30.4 
6/25.6| 28.7 
6|26.4) 30.8 
25.9| 28.4 
26 29.8 
6|25.5| 29.5 
9|26.1| 27.8 
Bulweria macgillivrayi (Gray): MAcGILLIVRAY’S PETREL 
Cours—4 strelata Macgillivrayi, TV, 159, 171. 
Satvin—Bulweria macgillivrayt, 420, 421. 
GopmMan—Bulweria macgillivrayi, xlviii, 260, pl. 75. 
Whether the variations existing in this supposed species 
are constant or not, is still an open question. 
have ascertained, a second specimen is yet to be taken. 
1 Carnegie Mus. 
2U.S. Nat. Mus. 
3 Stanford Univ. 
So far; as 1 
