At the southwest end of Lake Schrader, from July 23 to 31, 1952, a pair of mew gulls defended a territory and two young in the marsh bordering the edge of the lake and flew to meet us whenever we approached. They were active day and night. On August 3, 4, and 5, the female of this pair fed at the mouth of the river that flowed into the south end of Lake Peters 4.9 miles south of the nesting territory. On August 6, both adults and the two juveniles were at the south end of Lake Peters. The young called frequently and the adults, when we came near their young, called loudly and dived at us, but remained higher in the air than they did when protecting their young on the nesting territory. On August 6, the female (435 mm long and 290 grams in weight) was shot and prepared as a specimen. The two juveniles and the male remained in the area and on August 9, one of the juveniles (female) 422 mm in length and 362 grams in weight, was shot. On August 12 the male and one juvenile were still in the same area, and active day and night. +Pagophila eburnea+ (Phipps): Ivory gull.--Pete Savolik told us that whenever the pack ice came near shore at Point Barrow, a few ivory gulls were generally present. +Rissa tridactyla pollicaris+ Ridgway: Black-legged kittiwake.--Specimen, 1: 7-1/2 mi. S and 7 mi. W Point Barrow, 156 deg.49', 71 deg.17', sea level, 1 (skin) No. 31315 of an adult of unknown sex, September 6, 1952. The kittiwakes (Sept. 6, 1952), were in the air along the Arctic Ocean at Barrow Village and all along the coast at least as far as a point 10 miles southwest of Barrow Village (only a few were seen northeast of Barrow Village) and were feeding on material floating in the pre-breaker area of the ocean and to a lesser extent on debris washed up on the sands of the beach. +Xema sabini sabini+ (Sabine): Sabine's gull.--Specimens, 8: 7-1/2 mi. S and 7 mi. W Point Barrow, 156 deg.49', 71 deg.17', sea level, 1 (skin) No. 31316, ad. male, Sept. 6, 1952; Topagaruk, 155 deg.48', 70 deg.34', 10 ft., 7, Nos. 30740-30746 including 4 ad. males and 3 ad. females, July 6, 8, 9, 1951.