288 I,ARIDJ5. 



Adult. Head, neck, tail, and entire underparts white ; mantle 

 pearl-grej'' (decidedly lighter than in ordinary L. argentatus and less 

 blue than in L. glaucescens) ; scapulars and secondaries broadly 

 tipped with white ; outermost ])rimary ash-grey on the outer web, 

 witii a paler stripe 0-3 inch wide next the shaft on the inner web, 

 to within about 3 inches from the tip, the said 3 inches on both 

 webs and the rest of the inner web being white ; 2ud quill similar, 

 but with the grey on the inner web paler and less defined ; 3rd 

 very pale grey basally, a stripe of pale ash for about 3*5 on the 

 outer web, and about 2'5 of the terminal portion of the inner web 

 white. In the specimen in the British Museum these three quills 

 are much worn and abraded, while the -ith is missing. On the 5th, 

 which is new, there is a slight pattern of ash-grey on the outer 

 web ; the terminal portion of this and the succeeding quills being 

 white, which passes into palest grey basally. In the type specimen, 

 in the Smithsonian Museum, there appears to be more defiuition in 

 the pattern, owing partly to the better condition of the specimen. 

 Bill yellow, with a red spot at the angle : not very stout ; tarsi and 

 toes ochraceous yellow (in the dried specimen). Total length about 

 23 inches, culmen 2'4, wing about 16-5 (allowing for abrasion), 

 tail 7*75, tarsus 2-6, middle toe with claw 2-6. Our bird is 

 probably a female, judging from the measurements of the type, 

 which is a male. 



? Young (Vancouver I., 20th Dec). This specimen is very 

 similar to young L. glaucescens, but the rectrices are of a deeper 

 brown and un mottled on the exterior webs of the outermost pair. 

 In this respect the bird resembles young L. ocddentalls, but some 

 new grey feathers appearing on the mantle are far too pale for 

 that species. The measurements suit L. nelsorii better than 

 L. glaucescens. 



Hah. Alaska and North-west America. Only two adults are 

 known up to the present time. 



a. Ad. sk. Alaskan Coast. Capt. Kellett & Lieut. 



Wood, Il.N. [P.]. 

 ? &. ? juv. sk. Vancouver I., Dec. 20th H. Saunders Coll. 



{A. Forrer). 



42. Larus kumlieni. 



Larus glaucescens (wee Naum.), Kumlien, Bull. U.S. Nat. Mus. 



no. 15, p. 98 (1879 : Cumbeiiand 8d., Baffin Ld.) ; Breivst. 



Bull. Nutt. Orn. Club, 1883, p. 125 (Bay of Fuudj^ ; Merrill, 



t. c. p. 125 (Grand Menan). 

 Larus kumlieni, Brewster, Bull. Nutt. Orn. Club, 1883, p. 216 



(Cumberland Sd. and Bay of Fundy) ; Park, Auk, 1884, p. 196 



(N. York State) ; Baird, Brewer, 1^- Ridgw. Water-B. N. Amer. 



ii. p. 219 (1884) ; Coues, Knj N. Amer. B. 2nd ed. p. 742 (1884) ; 



A. O. U. Check-l. N. Amer. B. p. 88 (1886) ; Eidg^v. Man. N. 



Amer. B. p. 27 (1887). 



Adult in hreeding-jjlumage. Smaller than the preceding species, 



^J 



