U. S. NATIONAL MUSEUM 



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PROCEEDINGS, VOL. 88 PLATE 14 



164 



158. Gyrodactylus sp. from Fundulus heteroclitus: Posterior end, life. 



159, 160. Ancyrocephalus parvus, new species, from Strongylura marina: 159, Ventral view, 

 eye spots showing through; 160, posterior disk. 



162, 163. Dionchus agassizi Goto from Remora remora: 162, Ventral view of mouth, eye 

 spots showing through; 163, side view of hook, claw restored. 



164-169. Entohdella hippoglossi (Aliiller) from Hippoglossus hippoglossus: 164, Anterior 

 end, ventral view; 165, set of hooks on left side; 166, third hook and posterior 

 end of second; 167, third hook and posterior end of second from another speci- 

 men; 168, sagittal section of posterior edge of sucker; 169, sagittal section of 

 anterior edge of sucker. 



170-174. Tristoma papillosum Diesing from Xiphias gladius: 170, Portion of posterior suck- 

 er, ventral view; 171, spine from posterior sucker; 172, different types of mar- 

 ginal spines; 173, group of marginal spines; 174, ovum. 



175-179. Tristoma coccineum Cuvier from Xiphias gladius: 175, Portion of right margin 

 with accessory hook-bearing structure; 176, end of accessory hook-bearing 

 structure; 177, group of marginal spines; 178, marginal spine; 179, spine from 

 posterior sucker. 



