COPE PO DA FROM IFALUK ATOLL 289 



Orthopsyllus linearis (Claus, 1866) 



Cletodes linearis Claus, 1866, p. 22, pi. 2 (figs. 1-8). 



Orthopsyllus linearis.— \ktov a, 1928, p. 184.— Sewell, 1940, pp. 341, 343, 351, 

 360, 361, 363, 365, 367, 371, 373, 375.— Klie, 1941, p. 29.— Nicholls, 1941, 

 pp. 420, 421, 422; 1942a, p. 137.— Lang, 1948, p. 959, fig. 377.— Klie, 1950, 

 pp. Ill, 112.— Noodt, 1955, p. 83. 



Katacletodes improportionatus Jakobi, 1954a, p. 194, pi. 4 (figs. 1-11). 



The geographical distribution of this species has been discussed 

 by Lang (1948); no new locaHties have been added since. It is 

 distributed widely in the Atlantic Ocean, where its area of distribution 

 covers the northern temperate Atlantic, the tropical Atlantic, and 

 the southern temperate Atlantic. It has been recorded also from 

 the Mediterranean Sea and from several Indian and West Pacific 

 localities. The females measure from 0.9 to 1.25 mm.; the males 

 are smaller. 



Orthopsyllus linearis f. bulbosus Noodt, 1955 



Orthopsyllus linearis f. bulbosus Noodt, 1955, p. 83, pi. 9 (figs. 65-79). 



This form is based on a female and a male specimen from the Sea 

 of Marmara off Turkey (9 1.54 mm., cfl.l7 mm.) differing from the 

 typical 0. linearis in the structure of furca and antennule. The form 

 shows a sexual dimorphism that is much more pronounced than in 

 0. linearis] the male attributed by Noodt to this form has only 2 

 external marginal spines on the 3rd segment of leg 4 (3 in the female) 

 and the internal margin of the furca in the male is spinulose. 



Orthopsyllus propinquus Monard, 1926b 



Orthopsyllus propinquus Monard, 1926b, pp. 44, 54, figs. 64-73, — Sewell, 1940, 

 p. 341.— Klie, 1941, p. 29.— Nicholls, 1941, pp. 420, 422; 1942a, p. 138.— 

 Lang, 1948, p. 960, fig. 378.— Klie, 1950, p. 111. 



The geographical distribution of this species, which includes 

 several locaHties in the Mediterranean, has been discussed by Lang 

 (1948). No new localities have been recorded since. 



Orthopsyllus wallini Lang, 1934 



Orthopsyllus wallini Lang, 1934, p. 52, figs. 144-153.— Sewell, 1940, p. 341.— 

 Nicholls, 1941, pp. 420, 422.— Nicholls, 1942a, pp. 137, 138.— Lang, 1948, 

 p. 961, fig. 379 (no. 1).— Klie, 1950, p. 111. 



This species is based on 2 female specimens and 1 male specimen 

 from Brown River in Tasmania, a brackish water locality; it has not 

 been recaptm-ed since. The female measures about 1 mm.; the male 

 is smaller. 



