Okdee ANSERES.] [F AM . LAEID.E. 



LAEUS SCOPULINUS. 



(MACKEREL-GULL.) 



Larus scopulinus, Forst. Descr. Anim. p. 106 (1844). 



Larus novce hollandice, Gray, Voy. Ereb. & Terr. Birds, p. 18 (1844). 



Gavia andersonii, Bruch, J. f. O. 1853, p. 102. 



Gelastes andersoni, Bonap. Naumannia, 1854, p. 212. 



Lestris scopulinus, Ellman, Zool. 1861, p. 7472. 



Xemajamesonii, Gould, B. of Austr., vol. vii. pi. 20 (1848, nee Wils.). 



Bruchigavia jamesonii, Gould, Handb. B. of A. p. 387 (1865). 



Native name. — Tarapunga. 



Ad. pileo undique albo : corpore supra clare cinereo, tectricibus alarum dorso concoloribus, tectricibus pri- 

 marioruni albis versus apiceni cinereo lavatis : primariis nigris, albo apicatis, duobus exterioribus sub- 

 terminaliter plaga magna alba notatis, interioribus plerumque albis intiis cinereo lavatis nigro subter- 

 minaliter transfasciatis : secundariis dorso concoloribus : dorso postico cum uropygio caudaque albis : 

 subtus pure albus, subalaribus cinereo lavatis : rostro cruentato, culmine et apice pallidioribus : 

 pedibus pallidiiis cruentatis : iride argenteo-alba, : annulo optbthalmico cruentato. 



Juv. scapularibus et tectricibus alarum brunneo maculatis et marmoratis : primariis albo minus notatis, secun- 

 dariis conspicue brunneo lavatis. 



Adult. General plumage pure white ; the back, scapulars, and upper surface of wings pale ash-grey : 

 anterior edge of wings and four of the large outer coverts white ; first primary white at the base, 

 black in its median portion, the shaft, and then the whole surface becoming white, finally banded near 

 the tip with black ; the second similar to the first, but with more white at the base, the inner web 

 bemg margined with black, the median black less extended, and the shaft wholly white, with the same 

 extent of white beyond, but a broader subterminal band of black ; the thbd primary for two thirds of 

 its length white, edged on the inner web with dusky black, the rest of the feather black, the white, 

 however, being continued on the shaft till it spreads into a paddle-shaped mark on the inner web, about 

 halfway down from the tip, which is also white ; the fourth primary white, with the inner web wholly 

 covered towards the base and margined towards the end with dusky black, with a subterminal band of 

 black fully an inch in width ; on the fifth quill the dusky black changes to dark ash-grey, which spreads 

 over both webs towards the base, and the subterminal band is about half an inch in breadth ; on the 

 next quill the extent of white is considerably diminished, and the subterminal band is not only less in 

 breadth but is interrupted by a shaft-bne of white; the succeeding quills and the secondaries are 



