96 IOWA STUDIES IN NATURAL HISTORY 



Cymothoa immersa Say, Journ. Acad. Nat. Sci. Phila., I, 1818, 

 pp. 399-400. 



Cymothoa oestrum Desmarest, Consid. Gen. Crust., 1825, p. 

 309, pi. 47, figs. 6-7, Miers, Proe. Zool. Soc, 1877, pp. 671-672,— 

 Schiodte and Meinert, Naturh. Tidsskr. (3), 14, 1883-84, pp. 

 271-279, pi. 8, figs. 5-13. Richardson, American Naturalist, 34, 

 1900, p. 221 ; U. S. Nat. Mus., 23, 1901, p. 530 ; Bull. 54, U. S. 

 Nat. Mus., 1905, p. 254, fig. 263. 



Four adult specimens of this species were found parasitic on 

 the tongue of "horse-eye cavalli" (fish), May 28, 1918, Bar- 

 bados. About twenty-five very young of the second stage were 

 collected in sand, Barbados, June 2, 1918. One of the adults is 

 in the collections of the U. S. National Museum, Cat. No. 53883. 

 The remainder are in the collections of the State University of 

 Iowa. 



The type locality of this well-known parasite was recorded 

 ''Habitat in Oceano". 



It has been recorded as taken from the following hosts : Caranx 

 latus, C. ruber, "jack-fish", from branchial cavity; "red Fish" 

 stomach, in the tongue of Scombroid fishes, parasitic on the 

 mouth of Priacanthus arenatus and Trachtirops crumenopthal- 

 miis; Sparisoma ahilgaardi, Cynocion ciorchiis, on Stromhus gi- 

 ganteus, the various localities cited giving a geographic range 

 from the shore of Virginia to the southern shores of the Carib- 

 bean Sea, also the coast of Peru. 



The representatives of this species from the following localities 

 are in the collections of the U. S. National Museum : from the 

 mouth of Caranx ruber, Tortugas, Florida; Key West, Florida; 

 parasitic on Trachurops crumenoptJialmus, and on Priacanthus 

 arenatus, Bermuda; Cat. No. 28678, from the "stomach of red- 

 Fish", near Barbados; from parrot-fish, Sparisoma abilgaardi, 

 Montego Bay, Jamaica; from the branchial cavity of jack fish, 

 Caranx species, Jamaica; Curacao, Feb., 1884; from mouth of 

 fish, St. Thomas, Virgin Islands, U. S. ; 1 young male specimen 

 on the gills of Cynocion ciorchus, Colon market, Colon, Canal 

 Zone, Panama ; Swan Island, Caribbean' Sea. 



