PUERTO RICAN COPEPODS — GONZALEZ AND BOWMAN 257 



Acartia (Acanihacartia) spinala Esterly. — Steuer, 1915, p. 396; 1923, pp. 25-26, 

 figs. 115-121. 



Female. — Length 1.16-1.24 mm. Rostral filaments present. 

 PedSeg 5 rounded, posterior margin armed with dorsal series of 3-5 

 spinules and ventral series of 3-6 spinules. Posterior margins of 

 genital and second m^osome segments with dorsal rows of spinules. 

 Caudal rami about 1.6 times as long as wide, dorsal surface covered 

 with fine hairs. Al about as long as body; segment 1 with spine on 

 ventral surface; segment 2 with spine at proximal end of anterior 

 margin and row of 3-5 smaller spines on posterior margin. Segment 

 2 of P5 more than twice as long as wide; segment 3 about 2.5 times as 

 long as segment 2, bent inward distal to middle, about half as long as 

 seta of segment 2. 



Male. — Length 0.97-1.11 mm. Posterior margins of urosome 

 segments 2-4 with dorsal rows of spinules; segment 2 with a few groups 

 of lateral spinules; segment 4 with lateral bunch of hairs; caudal ramus 

 slightly wider than long. Al without spines. P5 as in figm-e 12a. 



Distribution. — Bermuda (Esterly, Clarke, Moore) ; between Long 

 Island and Bermuda (Grice) ; vicinity of Biscayne Bay, Fla. (Davis, 

 Woodmansee, Reeve) ; Knight's Key, Fla. (Grice) . Smithsonian- 

 Bredin Expeditions have collected it in Fort de France Harbor, 

 Martinique ; near Pigeon Point, Tobago; and off Cocoa Point, Barbuda. 

 It is abundant in Lameshur Bay, Saint John, Virgin Islands. In the 

 Puerto Rican collections it occurred both in the bays and over the 

 shelf. In Bermuda and in Biscayne Bay, Fla., A. spinata appears to 

 be more abundant in the open waters outside the bays than in the 

 bays themselves (Clarke, 1934; Woodmansee, 1958); Owre (1962) 

 reports it from the Florida Current 10 miles east of Miami. 



Acartia tonsa Dana 



Figures 11c-/ 



Acartia tonsa Dana, 1849, p. 26.— Giesbrecht, 1889, p. 25; 1892, pp. 508, 518-522, 

 pi. 30, figs. 7, 24, 34; pi. 43, figs. 6, 10.— Cleve, 1900, p. 44; 1901, p. 4.— 

 Foster, 1904, pp. 75-77.— Scott, 1914, p. 8.— Wilson, 1932b, pp. 160-162, 

 figs. 109a-d.— Sutcliffe, 1948, p. 234.— Davis, 1950, p. 91 (table) .—Davis 

 and Williams, 1950, passim.— King, 1950, p. 129 (table).— Carvalho, 1952, 

 p. 152.— Bousfield, 1955, p. 36 (table) .—Breuer, 1957, p. 143; 1962, p. 167.— 

 Simmons, 1957, p. 177.— Woodmansee, 1958, p. 251.— Grice, 1960a, p. 221.— 

 Bowman, 1961, passim. — Darnell, 1961, p. 555. — Cronin, Daiber, and Hul- 

 bert, 1962, pp. 77, 80-81.— Grice and Hart, 1962a, p. 294; 1962b.— Cervig6n, 

 1962, p. 185. — Jeffries, 1962, passim. — Cuzon du Rest, 1963, passim. — Reeve, 

 1964, passim. 



Acartia {Acanihacartia) tonsa Dana. — Steuer, 1915, p. 396; 1923, pp. 23-24, figs. 

 106-109. 



764-544—65 2 



