GNATHIIDEA 237 



Figure 102. Tridentella virginiana: A, 9; B, pereopod 1; C, maxilla 1; D, mandible; 

 E, maxilliped; F, maxilla 2. 



frequently encountered as a fish parasite, the favored site for sucking the 

 host's blood being in the nares. Upton (1987a, 1987b) has shed fight on the 

 unusual life history of at least one gnathiid genus, Paragnathia. 



The taxonomy of the Gnathiidae is based almost entirely on males, the 

 praniza and females of most species being remarkably similar. 



