78 THE CONDOR Vol. IX 



a growth of cedar and pine, some of ^Yhich attain a height of 60 to 70 feet; the 

 southern end of the island is however very barren. 



"The domestic goat in a wild state occurs on the island and deer and rabbits 

 are not uncommon. A Neotoma and a Peromyscus were the only small mammals 

 we found. The shores of the island are resorted to by seals and sea-otters, tho 

 we were unable to secure any, and the sea elephant was found there in the past." 

 (Mr. Brown collected specimens of the following mammals, all species peculiar to 

 Cerros Island: Odocoilcus cerroseiisis Merriam, Sylvilag-iis cerrosensis Allen, 

 Neoioma /^tj'c/;/// Merriam, and Peromyscus ced?'ose)isis Allen.) 



"Birds on Cerros Island are not only extremely scarce, but are very shy. On 

 the other islands we visited birds were tame and unsuspicious, and we were unable 

 to account for their exceeding shyness on Cerros. 



"We took specimens of three species of snakes and of five species of lizards 

 and noted no others during our stay." (These have not yet been identified.) 



Phalacrocorax dilophus albociliatus Ridg. One fully adult male in breeding 

 plumage with the white plumes well developed, April 9. 



Phalacrocorax penicillatus (Brandt). One adult female, April 20. 



Pelecanus calif ornicus Ridg. One female, April 9. 



Pandion haliaetus carolinensis (Gmel.). Two adult males, March 30 and 



April 5. 



Arenaria melanocephala ( Vig.). Five adults of both sexes, three males and two 

 females, ;March 26 to April 20. 



Haematopus frazari Brewster. Three adults of both sexes, two males and one 

 female, April 13 and April 18. 



These skins vary considerably in the amount of black on the under parts, all 

 but one showing some black spotting on the chest and under tail-coverts. One 

 male, taken April 13, however, has the under parts much as in H. falliattis, with 

 immaculate under tail-coverts, no black on the chest, and the black of the lower 

 neck ending in an even line. It differs from H. pallia f us mainly in its darker 

 back and in being less purely white on sides of rump and upper tail-coverts. 



Actitis macularia (I^inn.). One adult female, April 4. 



Heteractitis incanus (Gmel. ). Ten specimens both sexes: five in the adult, 

 spotted plumage, and five in immature gray plumage, x\pril 2 to April 24. 



Sterna maxima Bodd. Six specimens, adults and immature of both sexes, 

 April 13 to April 20. 



Larus heermanni Cassin. Two adult males, with pure white heads, April 20. 



Larus occidentalis Aud. Five specimens, four adult females and one young 

 male, April 1 to April 20. 



Zenaidura carolinensis carolinensis (Finn.). Two adult males, April 15 and 

 April 20. These do not differ in anv way from rather pale individuals taken else- 

 where at about the same season. 



Trochilus costae (Bourc). Six specimens, both sexes; none of the males in 

 quite full plumage; March 28 to iVpril 8. 



Trochilus anna (Less.). Two adult males, April 2 and April 3. 



Selasphorus rufus (Gmel.). One female, March 30. 



Sayornis saya (Bonap.). Two specimens, male and female. These birds are 

 rather pale, apparently faded, but otherwise do not differ from continental speci- 

 mens; they were taken on April 7 and April 17. 



Otocoris alpestris enertera Oberholser. Eight adults, both sexes, March 26 to 



