264 



GUIDE TO CALIFORNIA INSECTS. 



GERRIDy^. 



Figure 237. Gerris remigis. 



Aqaurius marginata^ — Gerris. 



remigis — Gerris. 

 Gerris franciscanus Stal. 



arginata Say. 



orbona Stal. 



remigis Say. 



robusta Uhl. 

 Hygrotrechus remigis — Gerris. 



robusta — Gerris. 

 Limnotrechus marginata^^Gerris. 



NEPINA. 



Ranatra quadridentata Stal. 

 Galgulus variegatus Guer. 



Corixa abdominalis Say. 

 bicoior Uhl. 

 dispersa Uhl. 

 fossarum Leach, 

 inscripta Uhl. 



NEPID/C. 



GALGULID>e. 



Mononyx badius H.S. 



CORISID/E. 



interruptus Say. 

 laevigata Uhl. 

 serrulata Uhl. 

 wallengreni Stal. 



NOTONECTID/E. 



Figure 238. A Notonectid. 



