81 Bulletin 38 III 



97, pi. 13, f. 45, 48, 1909; Johnson, Occ. Pa. Bost. Soc. N. 

 H., 7, p. 97, 1915. 



Distribution, — Massachussetts to Florida Ke^'S and West 

 Florida. 



Genus PER 8 ST 1 CHI A Ball 



toreta Ball, Bull. M. C. Z., 18, p. 340, 18S9; Bull. 37, U. S. N. 

 M., p. 130, pi. 42, f. 10, '89. 



Bistribution. — Cape Lookout, N. C. to Key West and 

 Charlotte Harbor, West Fla. 2-22 fms. 



agria Ball, Bull. M. C. Z., 18, p. 340, 1889; Bull. 37, U. S. N. 

 M., p. 130, '89. 



Bistribution. — Marco, West Fla. 0-2 fms. Also Key West 

 and off Hatteras. 



Genus ATLANTA Lesueur 



peroni Lesueur, Jour, de Physique, 85, p. 390, pi. 2, f. i, 2, 

 1817; d'Orbigny, Voy. Ame'r, Me'rid.,p, 171, pi. f2, f. 1-15, 

 1836; Ball, Bull. 37, U. S. N. M., p. 136, pi. 43, f. 4, 4a, 

 pi. 66, f. iioa, 1889; Pr. U. S. N. M., 37, p. 225, 1910; 

 Bull. 112, U. S. N. M., p. 138, 1921. 



Bistribution. — West Atlantic, Lat. 42° N. to Tropics. Gulf 

 of Mexico, West Fla. and Texas. Also eastern Pacific. 

 Pelagic. 



Genus OXYGYRUS Benson 



keraudreni Lesueur, Jour, de Physique, 85, p. 391, pi. 2, 1817; 

 H. and A. Adams, Genera Rec. Moll., 2, p. 92, 1858, 3, pi. 

 69, f. 6, 6b; Verrill, Trans. Conn. Acad., 6, p. 430, 1885; 

 Ball, Bull. 37, U. S. N. M., p. 136, '89; Johnson, Occ. Pa. 

 Bost. Soc. N. H., 7, p. 130, 1915. 



Bistribution.— West Atlantic, Lat. 39° N. to Tropics. Gulf 

 of Mexico, West Florida and Texas. Pelagic. 



