NO. 16 



MANTER : DISTRIBUTION OF DIGENETIC TREMATODES 



537 



are widely distributed common genera of fish trematodes. Such a condi- 

 tion is to be contrasted with the condition of endemic amphi-American 

 representatives of free-living animals where the genera are likely to be 

 endemic but the species different in the two oceans. 



TABLE 2 

 Pairs of Geminate Species and Their Distribution 



Trematodes 



Hosts 



Distribution 



1. Bianium adplicatum 

 B. plicatum 



Spheroides annulatus 

 S. angusticeps 



S. maculatus 



Galapagos Islands ; 

 Ecuador 



Tortugas, Florida 

 Beaufort, N,C. 

 Woods Hole, Mass. 



2. Lepidapedon hancocki 

 L. nicoUi 



Mycteroperca olfax 

 M. xenarcha 



Epinephelus ni'veatiis 



Galapagos Islands 

 Tortugas, Florida 



3. Lohatosioma pacifica 

 L. kemostoma 



Trachinotus paloma 

 T. carolinus 



Galapagos Islands 

 Not recorded but host 

 is distributed along the 

 South Atlantic and 

 Gulf coasts of the U.S. 



4. Plagioporus gastrocotylus 

 P. crassigula 



Calamus brachysomus 



C. bajonado 

 C. calamus 

 Diplodus holbrooki 



Galapagos Islands 

 Tortugas, Florida 



5. Prosorhynchus pacificus 



P. atlanticus 



Mycteroperca olfax 

 M. xenarcha 

 unidentified grouper 

 AI. bonaci 

 M. microlepis 

 M. 'venenosa 



Galapagos Islands 

 Tortugas, Florida 



6. Stephanostomum anisotremi Anisoiremus scapularis 

 S. sentum Calamus bajonado 



C. calamus 

 Caranx latus 

 C. ruber 



Haemulon plumieri 

 H. sciurus 



Galapagos Islands 

 Tortugas, Florida 



7. Tetrochetus proctocolus 



T. coryphaenae 



Cheilichthys annulatus 

 Trachinotus rhodopus 

 Angelichthys species 

 Coryphaena hippurus 



Galapagos Islands 



Tortugas, Florida; 

 Japan 



