7. OCEANODROMA KCEDINGI, Anthony. 



(KCEDING'S STORM-PETREL.) 



Oceanodroma kcedingi, Anthony, Auk, XV., pp. 37, 314, 317 (1898) ; Rothsch. and 

 Hartert, Nov. Zool., IX., p. 415 (1902) ; A.O.U., 9th Suppl., Auk, XVI., 

 p. 101 (1899) ; Godman, Biol. Centr.-Amer., Aves, III., p. 429 (1904) ; 

 Emerson, Condor, VIII., p. 54 (1906). 



0. leucorrhoa; similis, sed minor : cauda minus furcata : tectricibus supracaudalibus 

 exterioribus omnino pure albis, nonnullis medianis mediahter nigricantibus vel 

 cineraceis : pedibus debilioribus. 



Kcedeng's Storm-Petrel is a small dark form of 0. leucorrhoa, with a less deeply- 

 forked tail. The lateral upper tail-coverts are entirely pure white, the median 

 ones being blackish or ashy in the centre. The feet are less robust than in O. 

 leucorrhoa, the middle toe and claw measuring only 0.8-0.9 inch in length, whereas 

 in O. leucorrhoa they are fully an inch long. 



For a Storm-Petrel O. kcedingi has a somewhat restricted range, its habitat being 

 given by Mr. A. W. Anthony, who discovered the species, as from the Revillagigedo 

 Islands and the island of Guadalupe, northwards to the coast of southern California 

 {Auk, XV., p. 37). The first specimen of this Storm-Petrel was obtained by Mr. 

 Anthony at sea, near the island of Guadalupe, on the 25th July (i.e., p. 37). He 

 states that it was also commonly met with near Socorro Island, in the Revillagigedo 

 Archipelago, apparently migrating (t.c, p. 314), and likewise in the vicinity of Clarion 

 Island, in the same group {t.c, pp. 314, 317). 



According to the same observer, numbers were seen at sea off the San Benedicte 

 Islands as late as 1st June ; but he found no evidence of the nesting of the species there, 

 probably owing to the prevalence of the large number of land-crabs which infest the 

 burrows all over the islands, and which would probably destroy the eggs and young 

 birds {t.c, p. 314). 



Three specimens procured by Mr. Beck in Lat. 18° N., Long. 103° W., and in 

 Lat. 5° 30' N., Long. 102° W., are now in the Hon. Walter Rothschild's Museum at 

 Tring (cf. Rothsch. and Hartert, Nov. Zool., IX., p. 415, 1902). 



The habits of this Storm-Petrel are doubtless similar to those of its congeners. 

 Mr. Emerson {Condor, VIII., p. 54) says that, in comparison with O. leucorrhoa, 



13 



