256 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 117 



Acartia lilljeborghii Giesbrecht. — Carvalho, 1952, pp. 150-151, pi. 1, figs. 40- 

 41.— L6gar6, 1961, table 5.— Zoppi, 1961, table 4.— Bjornberg, 1963, pp. 

 61-62, fig. 32. 



Acartia Fariae Oliveira, 1945, p. 459, pi. 6, figs. 1, 2, 8. 



Lahmeyeria turrisphari Oliveira, 1947, pp. 463-465, pi. 4, figs. 1-8. 



Female. — Length 1.15-1.20 mm. Rostral filaments present. Ped- 

 Seg 5 produced into long spiniform process, dorsal to which are 2-3 

 minute spines. Urosome short; posterior margins of genital segment 

 and urosome segment 2 armed with spinules; anal segment and caudal 

 rami each with lateral groups of hairs. Caudal rami twice as long as 

 wide. Al about as long as body; proximal segments with margins 

 produced into strong spines as in figure lOd. Segment 2 of P5 longer 

 than broad, with median shelf distal to middle; segment 3 naked, 

 slender, 3 times as long as segment 2, subequal to seta of segment 2. 



Male. — Length 1.02-1.04 mm. PedSeg 5 with shorter spiniform 

 process than in female, single large dorsal spine about half as long as 

 process, and minute spinule above dorsal spine. Posterior margins of 

 urosome segments 2, 3, and 4 armed with spinules; segment 1 with 

 group of hairs on each lateral surface; segment 2 with groups of fine 

 spinules on lateral surfaces, extending onto ventral surface; segment 

 5 and proximal part of caudal ramus with lateral clumps of hairs. 

 Caudal ramus about as wide as long. Al without spiniform proc- 

 esses. P5 as in figure 1 If. 



Distribution. — On the Pacific coast of South America it is known 

 from the widely separated type localities, Valparaiso, Chile, and 

 Guayaquil, Ecuador. On the Atlantic coast it has been collected 

 along the coast of southern Brazil and the Gulf of Cariaco, Venezuela. 

 Smithsonian-Bredin Expeditions have taken it at Marigot Bay and 

 Castries Harbor, Saint Lucia, and Progresso, Yucatan, Mexico. 

 The U.S. National Museum has specimens from Cardenas Bay, Cuba. 

 In Puerto Rico it occurred both in the bays and over the shelf. 



The armature of Al and the pointed PedSeg 5 of Acartia Jariai show 

 clearly that Oliveira's (1945) species is synonymous with A. lilljeboryii. 

 Lahmeyeria turrisphari Oliveira (1947) is an immsituTe A. lilljeborgiim 

 which the hooks on Al are not fully developed. The illustrations of 

 P2-P5 depict immature appendages. 



Acartia spinata Esterly 



Figures 10/-t, 116, 12a 



Acartia spinata Esterly, 1911, p. 224, pi. 1, figs. 3, 5; pi. 2, figs. 16, 19; pi. 3, fig. 24; 

 pi. 4, figs. 37, 45.— Clarke, 1934, passim.— Moore, 1949, pp. 61-62.— Davis, 

 1950, pp. 90-91.— Woodmansee, 1958, p. 255.— Grice, 1960a, p. 224; 1962b.— 

 Owre, 1962, p. 493 (list).— Reeve, 1964, passim. 



