PUERTO RICAN COPEPODS — GONZALEZ AND BOWMAN 261 



Longipedia helgolandica Klie 



Figures 15, 16a-c 



Longipedia minor helgolandica Klie, 1949, pp. 97-100, figs. 1-3. — Noodt, 1956, p. 

 44; 1957, pp. 153, 224. 



Longipedia coronata Claus. — Williams, 1906, p. 651; 1907, p. 72. — Fish, 1925, pp. 

 145, 146 (lists).— Wilson, 1932b, pp. 170-171, fig. 16.— [?] Nicholls, 1941, 

 p. 384, fig. 1.— King, 1950, p. 129 (table).— [?] Pesta, 1959, p. 98, figs. 1-3. 



Diagnosis. — A small Longipedia, about 0.8-0.9 mm. long. Mar- 

 gins of m"osome segments smooth dorsaUy, minutely serrate ven- 

 trally. Anal operculum with long central spine and 2 pairs of lateral 

 spines, outer pair much smaller than inner. Caudal setae unarmed. 

 Re3 of Pi with 2 inner setae. Outer spine of Re3 of P2 inserted 

 distad to proximal inner spine, present in both sexes. Female P5 

 as in figure 166; male P5-P6 as in figure 16c. 



Female. — Length, excluding rostrum and caudal setae, 0.78-0.93 

 mm. Prosome about 3 times as long as wide, about 1.2 times as long 

 as urosome. Ventral margin of head with numerous fine setae as in 

 L. coronata. Posterior margins of urosome segments smooth on dorsal 

 and lateral parts; ventral margins of segments 2, 3, and 4 finely serrate. 

 Anal operculum similar to that of L. coronata; central spine longer 

 than rest of segment, reaching beyond caudal rami; 2 pairs of lateral 

 spines, inner one well developed, curving mediad, with small medial 

 to its base, outer one very small. Caudal rami about 1.4 times as 

 long as wide at base, without surface spinules. Caudal setae as in 

 L. coronata: 2 dorsal, 2 ventral, 3 terminal. Outer 2 terminal setae 

 jointed near base; inner seta not jointed, shorter and more slender 

 than other terminal seta. Longest seta about 0.85 as long as body. 

 All caudal setae naked. 



Al as in L. coronata. A2, terminal segment of Re with 3 sparsely 

 plumose setae as in L. coronata plus a short naked seta; second 

 segment of Ri with 5 setae. Gnathal lobe of Md with 2 blunt teeth, 

 followed by 2 teeth jointed at their bases, a rounded tooth, a pointed 

 tooth, and a longer blade. Md palp as in L. coronata except that dis- 

 tal endopod segment has 5 rather than 6 apical setae. Mxl, Mx2, 

 and Mxp as in L. coronata. 



Pi, Re3 with 2 inner setae. P2 as in L. coronata, Ri3 more than 

 twice as long as Ril and Ri2 combined; long outer seta situated 

 slightly distal to proximal inner spine; middle terminal seta deeply 

 serrate on medial border. P3 and P4 like those of L. coronata. 



P5 closely resembling figures of L. coronata P5 by Scott (1909, 

 pi. 59, fig. 7), Gurney (1927, fig. 122B), and Nicholls (1941, fig. 1). 

 Re about 2.5 times as long as greatest width, with 5 marginal setae 



