EXPLANATION OF PLATE XXIII. 



Larva (L. 30) from intestine of Wallago attoo, Bl. Schn. 



Fig. 61. — Transverse section, 1 mm. from head. 

 ,, 62. — Transverse section, 2 mm. from head. 



Larva (L. 14), from stomach of Wallago attoo, Bl. Schn. 

 ,, 63. — Head. X 1500. 

 ,, 64. — Tail from ventral surface. X 1500. 

 ,, 65. — Tail from left side. X 1000. 



Oncholaimus indicus, v. Linstow. 



Fig. 66. — 9 from right dorsolateral aspect. X 150. 



,, 67. — 9 . Head from the left side. X 1000. The lips are 

 protruded. 



,, 68. — & . Head seen from ventral aspect. X 1000. The lips 

 are folded in. 



,, 69. — cf , Tail from right side. X. 433^. 



,, 70.— 9 . Tail from left side. X 2i6f. 



