APPENDIX. 



Page 23. 



42. 1. Larus barrovianus Ridgw. 



Point Barrow Gull. 



4, 1. Diomedea exulans, Linn. 



Wandering Albatross. 



Page 41. This species has been added to the 'Hypothetical 

 lyist ' of the A. O. U. Check L,ist upon unsatisfactory evidence of its 

 occurrence in the localities stated in the habitat. 



106.1. Oceanodroma macrodactyla (Bryant.) 



Onadalupe Petrel. 



Hab. Guadalupe Islands, Lower California, 



See reference to this Petrel as observed by Mr. Bryant on Guada- 

 lupe Island, under head of Leach's Petrel, page 48, and foot-note^ 

 page 49. 



114.1. Sula gossi Ridgw. 



Blue-footed Booby. 



Hab. Islands in the Gulf of California, south to the Galapagos. « 



Between the 15th and 28th of March, 1888, Col. N. S. Goss found 

 this new species breeding on the San Pedro Martir Isle, situated in 

 the Gulf of California about midway between the shores. It is a rock 

 about one and a half miles long, nearly as broad, and about 1045 feet 

 in height, a little north of latitude 28°. Colonel Goss states that the 

 birds make no nests and lay but one egg; this they drop upon the 

 smooth rock, often in exposed situations, preferring the places where the 

 guano has been removed and, in many cases, close beside the winding 

 paths that were hourly trodden. No young birds were found, and 

 from the* condition of the many eggs examined, he was of the 

 opinion that the birds do not commence laying before the first of 

 March. The average measurement of twenty-one eggs is given as 

 2.42x1.60. The ground color is greenish-blue, coated with a dull 

 white chalky substance, but generally more or less stained with guano 

 that generally gives them a dirty buff white look ; in form elliptical 

 ovate*. A specimen of the egg of tliis species in the collection, of 

 Capt. B. F. Goss measures 2.34 x 1.60. 



" *The Auk, V, p. 242. 



443 



