OF THE GALAPAGOS ARCHIPELAGO. 505 
Larus FuLIGINOsUS. (Plate LXXXVII.) 
Larus fuliginosus, Gould, Zool. Voy. Beagle, iii. p. 141; Scl. & Salv. P. Z. S. 1870, p. 323, et 1871, 
p. 574; Sundey, P. Z. S. 1871, p. 125. 
Obscure cinereus, capite undique obscuriore ; subtus pallidior, abdomine imo albicanti- 
griseo: secnndariorum apicibus et tectricibus supracaudalibus albidis, his griseo tinctis: 
remigibus 1°, 2°, 3° omnino nigris, 4°, 5°, 6° griseo terminatis; reliquis griseo-nigrican- 
tibus, apicibus paulo pallidioribus: cauda dorso concolori, rectricibus duabus utrinque 
externis albidis: macula supra et infra oculos alba, ciliis rubris, iride brunnea: rostro et 
pedibus rufescenti-nigris: ore ruberrimo: long. tota 18-0, alz 13-8, caude 5:9, tarsi 2°3, 
rostri a rictu 2°5. 
2 juv. fuliginosa, subtus paulo dilutiore: alarum tectricibus pallide fusco marginatis : 
remigibus et tectricibus nigris: rostro et pedibus nigris: iride obscure brunnea. 
Hab. Galapagos (Darwin) ; Indefatigable and Abingdon Islands (//abe/); Charles and 
Indefatigable Islands (Swndevall). 
The nearest allied species to Larus fuliginosus is L. modestus of the coasts of Peru 
and Chili. We have already pointed out the differences between these birds in our 
paper on South-American Laride (P. Z.S. 1871, p. 573). They consist in the Gala- 
pagos bird having a stouter hill and a well-marked blackish hood. The figure now 
given, compared with the plate of Larus modestus in Fraser’s ‘ Zoologia Typica’ (t. 69), 
will, I trust, prevent further confusion respecting these species. 
“A pleasing bird, which does not fly away, but on the contrary approaches one with 
a friendly greeting call-note. They sometimes become troublesome, as they feed on meat 
hung up to dry, and are driven off only to return again. They take little notice of 
stones thrown at them, unless actually hit. They appear to be always quarrelling and 
chattering with each other over their food, each one trying to take the morsels from 
another. When I shot a bird the others all circled round me, whether in grief or rage 
I could not say. They form more or less numerous groups, chiefly frequenting the sea- 
shore, and in smaller numbers they visit the lagoons. This Gull feeds on crabs and 
any dead animal substance. Amongst a large flock of slaty-coloured birds some few of 
a brown colour will be seen. I was inclined to look upon these as varieties, being at a 
loss how else to account for them. These Gulls fly but a short way, and do not appear 
to pass from island to island. I did not observe any on Hood’s island.”—//. 
Genus CREAGRUS. 
This genus seems to have been suggested by Bonaparte in his criticism of Herr 
Bruch’s first paper on Laride, published in the ‘Journal fiir Ornithologie’ in 1853. 
Bonaparte writes, “Le sixieme genre de M. Bruch est coupé par moi en deux: chacune 
de ces espéces formant le type d’un genre séparé, Xema restant 4 sabini, Leach, pour 
laquelle il fut créé, et furcatus, Néboux (non Lesson), étant celui de Creagrus, Bp.” 
3¥ 2 
