346 



FISHERY BULLETIN OF THE FISH AND WILDLIFE SERVICE 



DIGENEA— Continued 

 Spirorchidae 



13. Hapalotrema synorchis Luhman, 1935. 



14. Neospirorchis pricei Manter & Lanson, 



1950. 



15. Caretlacola bipora Manter & Larson, 1950. 



Five of these species {Pyelosomum longicaecum, 

 Pachypsolus ovalis, P. tertius, Rhytidoedn secundus, 

 and Hapalotrema synorchis) are known as yet only 

 from the Gulf of Mexico. 



TREMATODES OF CHELONIA MYDAS, THE GREEN 

 TURTLE 



Lists by Hughes, Higginbotham, and Clary 

 (1941) and Ruiz (1946) show that 51 species of 

 trematodes have been reported from Cheloma 

 mydas in various parts of the world. Of these, 

 10 species or about one-fifth of the total, are also 

 known from Caretta caretta. I believe no other 

 species of host is known to harbor as many as 50 

 species of trematodes. Surely, no other reptile 

 approaches this number. 



No definite records of species have been pub- 

 lished from this host in the Gulf of Mexico. 

 Manter (1930) states that he collected three 

 species of trematodes from Chelonia at Tortugas 

 but had not then identified them. This collection 

 is still incompletely studied. Two of the species, 

 however, can be reported as Desmogonius des- 

 mogonius Stephens, 1911, known from the same 

 host from the coast of Nicaragua; and Polyangium 

 linguatula (Looss 1899) Looss 1900, known from 

 the Mediterranean and from Brazil. More ex- 

 aminations of Chelonia mydas will, without doubt, 

 reveal additional species in Gulf waters. Ruiz 

 (1946) reports 10 species from this host from the 

 coast of Brazil. Price (1939a) reports Rhytido- 

 doides intestinalis Price, 1939, and R. similis 

 Price, 1939, from a Chelonia mydas which died in 

 the Washington Zoo but does not state the origin 

 of the turtle. 



TREMATODES OF ERETMOCHELYS IMBRICATA, 

 THE HAWK-BILL TURTLE 



Apparently only one trematode has been re- 

 ported from this turtle in the Gulf region. It is 

 Diaschist orchis pandus (Braun) reported from 

 Cuba by Vigueras (1935). This trematode has 

 an almost world-wide distribution and also infects 

 Caretta caretta and Chelonia mydas. Five species 

 of trematodes are known from E. imhricata from 



Japanese waters, two from Australia, one from 

 Bermuda, and one from Ireland. 



TREMATODES OF DERMOCHELYS CORIACEA, THE 

 LEATHERY OR LEATHERBACK TURTLE 



Apparently only one species of trematode, 

 Pyelosomum renicapite (Leidy 1856) Ruiz 1946, 

 has been recorded from this turtle and none from 

 the Gulf of Mexico. However, Dr. A. C. Chandler 

 informs me (by correspondence) he has collected 

 this species of trematode from a leather-back 

 turtle washed up near Galveston, Texas, some 

 years ago. 



TREMATODES OF BIRDS OF THE GULF 

 OF MEXICO 



Almost no study of trematodes collected from 

 birds from the Gulf of Mexico has been made. 

 Obviously such trematodes must be numerous. 

 It seems Jjeyond the scope of this paper to assemble 

 the scattered records of trematodes collected else- 

 where even from birds which occur in the Gulf. 



Pratt (1911), Linton (1928), and Manter (1930) 

 all mention Galactosomum cochlearijorme (Rud.) 

 as present in Fregata magnificens, the man-of-war 

 bird, at Tortugas, and Chandler (1951) recorded 

 Galactosomum fregatae and a new strigeid, Schwartz- 

 itrema seamsteri, from a specimen of this bird 

 near Corpus Christ i, Tex. 



Records from oceanic birds from the Caribbean 

 region include: 



Galactosomum johnsoni Price, 1934, from Sula leu- 



cogaslra, brown booby, from Puerto Rico. 

 Galaclosomuvi fregatae Prudhoe, 1949, from Fregata 



magnificens, man-of-war bird, from Trinidad. 

 Galactosomum darhyi Price, 1934, from Pelecanus 



occidentalis, brown pelican, from Dominican 



Republic. 

 Mesostephanus appendiculatoides (Price, 1934) Lutz, 



1935, from Pelecanus occidentalis, brown pelican, 



from Dominican Republic. 

 Mesostephanus fajardensis (Price, 1934) Lutz, 1935, 



from Sula leucogaster, brown booby, from Puerto 



Rico. 



TREMATODES OF MAMMALS 



Marine mammals, particularly dolphins and 

 whales, are commonly infected with trematodes. 

 No collections from such hosts, however, appear 

 to have been made in the Gulf of Mexico. 



Sokoloff and Caballero (1932) described a trem- 

 atode, Schizamphistoma manati from a manatee, 



