Bull. U. S. F. C. 1899. (To face page 492.) 
Plate XVIII. 
209. Ichthyonemci globiceps Rudolphi. Anterior end of specimen from 
Lobotes surinainenm, from life: sketched by Margaret B. Lin- 
ton. x 22. 
210. Young individual escaped from uterus of foregoing. 300. 
211. Anterior end of specimen from Pomatomus satiate ix. < 65. 
e, Young worms in body cavity; i, intestine; oc, oesophagus; 
ov, ovary. 
212. Pharynx, x 300. 
213. Junction of oesophagus and intestine, optical section, x 300. 
c, c, c, Cells in wall of oesophageal valve; i , wall of intestine; 
oe, oesophagus. 
214. Posterior end. x 36. 
215. Portion of intestinal wall near posterior end, showing charac- 
teristic reticula tint . < 65. 
216. Optical section of middle of body of a specimen from Tarpon 
atlanticus. x 65. or, Outer, and or', inner, fold of uterus; 
f, intestine. 
217. Ova; a from outer, b from inner, fold of uterus. (See fig. 216.) 
X 300. 
21S. Ichthi/oncma sp. from Chsetodipterus faber; oc, oesophagus; ov, 
ovary. Anterior end. x 100. 
219. Posterior end of same, x 100. 
