19 BuLi.ETiiX 38 49 



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

 Genus RETUSA Brown 



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

 p. 47, pi. 17, f. 4, 'S9; 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 Utr Indus Brown, 

 1827 ("not of Schumacher, 1S17) in the synonymy of 

 Retusa. 



Distribution. — Yucatan Strait, 640 fms. 



Genus SCAPHAf^DER Montfort 



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

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

 Pilsbry, 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 Love'n, Index Moll. Scand., p. 10, 1846. 



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

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

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

 ern habitats. 



vvatsoni Dall, Bull. M. C. Z., 9, p. 99, 1S81; 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 fras. Gulf of 

 Mexico, West Fla. region, dredged U. S. Fi.sh 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., 

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



Distribution. — Martha's Vineyard 906-1309 fms., Delaware 

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

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



