216 Bulletin, Vanderbilt Marine Museum, Vol. Ill 



a fact which has frequently caused the male to be identified as a differ- 

 ent species, notably as Pontellina turgida Dana. 



Distribution: A very widely distributed pelagic species in the 

 Atlantic and Pacific Oceans, but seldom found in great quantities. 



Material examined : About a dozen females, taken in the net down 

 about 300 fathoms, bottom depth 1400 fathoms, seven miles southwest 

 of Cape Mala, Panama, by the ''Ara." 

 Synonymy. — Pontellina plumata Dana, Crustacea, U. S. Explor. 



Exped., vol. 13, p. 1135, pi. 79, figs. 10a to d, 1852. — Giesbrecht, 



Bull. Mus. Comp. Zool., vol. 25, p. 260, 1895. 

 Pontellina turgida Dana (male specimen, idem, p. 1136, pi. 79, figs. 



11a to b). 

 Pontella plumata G. S. Brady, Report Voyage '^Challenger," Zool., 



VIII, p. 92, pi. 37, figs. 1-11, 1883. 



Family: CALIGIDAE. 



Subfamily : Pandarinae. 



Genus : PANDAEUS Leach. 



Pandarus "bicolor Leach. 



Plate 83. 



Discussion : Dr. C. B. Wilson's masterly diagnosis of the European 

 representative of this species applies with equal force to the American 

 representatives of this species and render further description super- 

 fluous. According to Dr. "Wilson, P. hicolor is evidently a European 

 species, since nearly every European author mentions it, and not 

 found on the American side of the Atlantic up to 1908. 



The ''Ara" specimens appear to be the first American record of the 

 species and a specimen is figured for this reason. The geographic dis- 

 tribution of the host would make it possible and probable for this 

 parasite to have an even greater American range than is yet known. 



Material examined: About thirty-six specimens, including both 

 sexes, found parasitic on shark, taken off Jicaron Island, Panama, 

 January 27, 1928, by the ^'Ara." Seven specimens from tiger-shark, 

 captured March 23, 1925. The color patterns on the mature adult speci- 

 mens of both sexes are densely pigmented, while the young and imma- 

 ture forms are yellowish, or dirty grey as compared to the deep 

 reddish-brown markings of the older specimens. 



Synonymy. — Pandarus hicolor Leach, 1816, Suppl. to the fourth, 

 fifth and sixth editions of the Encyc. Brit., 1824 (issued 1816), 



