148 SULIDZ. 
second clutch in the same nest. The birds were so tame that some perched on his 
head and shoulders, and others on the rails of the skiff as he rowed ashore. On Socorro 
neither this species nor the other Boobies were so common as on San Benedicte ; but 
on Clarion Island S. websteri was very abundant, and its nests were seen placed on 
branches of low shrubby trees. 
5. Sula nebouxi. 
Sula piscator (nec Linn.), Grayson, Pr. Bost. Soc. N. H. xiv. p. 302'; Lawr. Mem. Bost. Soc. 
N. H. ii. p. 316°. 
Sula nebouxi, Milne-Edwards, Ann. Sci. Nat. (6) xiii. art. 4, p. 87, t. 14°; Ridgw. Man. 
N. Amer. Birds, 2nd ed. p. 584‘; Ogilvie Grant, Cat. Birds Brit. Mus. xxvi. p. 435° ; 
Nelson, N. Amer. Faun, no. 14, p. 31°. 
Sula gossi, Ridgw. Auk, v. p. 2417; A. O. U. Check-l. N. Amer. Birds, p. 40°. 
Brunnea, dorsi plumis albido marginatis; alis brunneis, primariis nigricantibus ; rectricibus medianis albis, 
reliquis griseis externe saturate brunneis; pileo colloque brunneis, albo striolatim marginatis ; collo 
postico albo; prapectore et corpore reliquo subtus albis ; subalaribus griseo-brunneis, externis saturate 
brunneis, minoribus albidioribus; axillaribus albis: rostro plumbescenti-corneo, ad basin plumbescenti- 
exruleo; regione oculari et gula nudis plumbescenti-ceruleis ; pedibus lete ciruleis; iride flava. Long. 
tota circa 29:0, ale 16-1, caude 87, culm. 4°1, tarsi 2-0. (Descr. maris adulti ex Ins. Tres Marias. 
Mus. nostr.) 
Q mari similis, sed major. Long. ale 17:6, culm. 4:5. (Descr. femine adulte ex Ins. Tres Marias. Mus. 
nostr.). 
Hab. ISLANDS OF THE GULF oF CaLirornia §, San Pedro Martir (Goss 7), San Juanito I. 
(Nelson ®).—RevituaciGevo Is., Socorro I. (Grayson!) ; Mextco, Isabel I. (Gray- 
son 4, Nelson ®), Coast of Mazatlan (Bischoff), ‘Tres Marias Is. (Forrer ®, Nelson ®). 
—GaALAPAGOS ARCHIPELAGO ®; CHILE®. 
S. nebourt was originally described from Chile®; but it has since been found in the 
Galapagos Archipelago, and along the Pacific coast of Mexico as far north as the 
islands of the Gulf of California. Mr. Nelson met with the species abundantly on 
Isabel and the Tres Marias Islands; as regards the former he gives a most interesting 
account of his observations. ‘the nests were merely hollows in the earth or gravel, 
or on the grassy beach among the scrubby trees and bushes; when approached, the 
males usually flew away, leaving the females, which are the larger birds, to protect 
them. Sitting on their eggs, they fought and screamed savagely, and gave vicious 
digs with their bill at the legs of anyone who came within striking distance. By the 
light of a candle, on a calm night, he visited their nesting-place, and found the females 
sitting on their eggs with the males standing beside them; when he appeared they 
set up a continuous series of hoarse cries, and, like moths, fascinated by the light, 
they trooped in single file from right to left in a circle round him. One was 
suddenly possessed with the desire to run round Mr. Nelson’s legs, and, although 
several times seized by the head and tossed among its companions, repeatedly returned 
and continued its gyrations. 
