ig Bulletin 38 ■ 49 



coast, St. Joseph's Bay and Crooked Isl., West Fla. 

 Genus RETUSA Brown 



frielet Dall, Bull. M. C. Z., 9, p. loi, 1881, (as Utriculus); 18, 

 p. 47, pi. 17, f. 4, '89; Bull. 37, U. S. N. M., p. 86, pi. 17, 

 f. 4, '89; Pilsbry, Man. Conch., i ser., 15, p. 219, pi. 21, f. 

 8, 1893- 



Note. — I follow Cossmann in placing Utriculus Brown, 

 1827 (not of Schumacher, 18 17) in the synonymy of 

 Retusa . 



Distribution. — Yucatan Strait, 640 fms. 



Genus SCAPHAfJDER Montfort 



punctostriatus Mighels, Pr. Bost. Soc. N. H., i, p. 49, 1841, (as 

 Bulla); Dall, Bull. 37, U. S. N. M., p. 86, pi. 72, f. 4, '89: 

 Pilsbr}', Man. Conch., i. ser., 15, p. 246, pi. 31 f. 16, '93: 

 Johnson, Occ. Pa. Bost. S. N. H., 7, p. 149, 191 5. 



librarius Do ve'n, Index Moll. Scand., p. 10, 1846. 



Distribution. — -Iceland & Norway to Bay of Biscay. Maine 

 to Barbados, 46-1467 fms. Gulf of Mexico, Dat. 28° N., 

 Don. 88° W., 533 fms. Inhabits shallow water in its north- 

 ern habitats. 



watsoni Dall, Bull. M. C. Z.,-9, p. 99, 1881; 18, p. 52, pi. 17, f. 

 10, '89; Bull. 37, U. S. N. M., p. 86, pi. 17, f. 10, '89. 



Distribution. — Hatteras to Barbados, 54-324 fms. Gulf of 

 Mexico, West Fla. region, dredged U. S. Fish Com., bot- 

 tom temperature 46° F. 



nobilis Verrill, Tr. Conn. Acad. Sci., 6, p. 209, pi. 32, f. 18; 

 Dall, Bull. M. C. Z.. 18, p. 53, 1889; Pilsbry, Man. Conch., 

 1 ser., 15, p. 249; '93. 



Distribution. — Martha's Vine^^ard 906-1309 fms., Delaware 

 Bay 1091-1209 fms., Tobago 880 fms.. Gulf of Mexico, U. 

 S. Fish Com. Station 2127, at 1639 fms. 



