Bull. U. S. F. C. 1899. (To face page 492.1 
Plate IV 
26. Ascaris linstowi sp. nov., continued. Upper lip. x 300. 
27. Ventral view of head of male, x 300. 
28. Lateral view of tail of male. X 65. 
I 29. Ascaris incurva Rudolphi, from Xiphias gladins. Ventral 
view of head, x 300. 
30. Upper lip of same, x 300. 
31. Nearly ventral view of tail of female, x 40. 
32. Tail of male, lateral view, x 65. 
