176 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 109 



Distribution: Eastern Siberia and Point Barrow, Alaska, to the 

 Shumagin Islands; Greenland, Spitzbergen, and Nova^^a Zendya. 

 Point Barrow is a new locality. 



Suborder Cyclodonta 



Family Cardiidae 



Genus Clinocardium Keen, 1936 



Clinocardium ciliatum (Fabricius, 1780) 



Plate 26, figure 4 



Cardium ciliatum Fabricius, 1780, p. 410. — G. Sars, 1878, p. 46, pi, 5, figs. 4a-b.— 



Oldroyd, 1924, p. 142, pi. 19, figs. 8, 8a. 

 Clinocardium ciliatum Morris, 1947, p. 41, pi. 17, fig. 3; 1951, p. 63, pi. 17, fig. 3; 



1952, p. 39, pi. 9, fig. 9.— Kira, 1954, p. Ill, pi. 55, fig. 2. 



Four living specimens ranging from 45 mm. long by 43 mm. higb 

 to 62 by 60 mm. were taken from 110 feet (Sept. 8, 1948), 152 feet, 

 453, and 522 feet. A shell 21 by 20 mm. was taken at Eluitkak Pass 

 (Aug. 10, 1948), another 25.5 by 24.5 mm. at 110 feet, and 1 valve 

 28 by 27 mm. at 295 feet. 



Other material examined: Many specimens from localities rang- 

 ing from Icy Cape (1 valve), Cape Prince of Wales (1 valve), and 

 Bering Strait to the Pribilofs, the Aleutians, and Sitka Harbor; also 

 from Davis Strait, Greenland; Labrador, Nev/foundland, IMaine, and 

 Massachusetts; and from Iceland. 



Distribution: From Point Barrow to Puget Sound and Japan; in 

 the Atlantic area from the Arctic Ocean to Cape Cod and northern 

 Norway. This is the first record of living specimens from north of 

 Bering Strait. 



Genus Serripes Gould, 1841 

 Serripes gronlandicus (Bruguiere, 1789) 

 Plate 26, figure 5 



Cardium gronlandicum Bruguiere, 1789, p. 222. 

 Serripes gronlandicus Gould, 1870, p. 145, fig. 454. 



Serripes groenlandicMS Clench and Smith, 1944, p. 28, pi. 13, figs. 5-7.— Abbott, 

 1954, p. 401, pi. 32d. 



A total of 31 living specimens and 7 shells was collected from 19 

 stations (never more than 3 at any one station) and 3 hving and 3 

 dead specimens were washed ashore in August and September 1949. 

 Three of the living specimens and 3 shells came from Eluitkak Pass, 

 1 from 328 feet, and 1 from 420 feet, the remainder coming from 

 depths of 50 to 184 feet. The majority of these specimens are over 

 20 mm. in length; the largest (from 328 feet) is 60 by 51 by 28 mm. 



