WATER BEETLES IN RELATION TO PONDFISH CULTURE. 
297 
1mm 
Fig. 69.— Ventral view of pupa of Thermonectes basilaris. Fig. 70.— Side view of same, showing arrangement of spines. Fig. 71.— 
Ventral view of pupa of T. ornaticollis. Fig. 72. — T. basilaris, antenna of .adult beetle. Fig. 73.— Maxilla of adult beetle. 
Fig. 74. — Maxilla of adult T. ornaticollis. 
