318 



ZOOLOGY. 



gented by the circle behind the brain, sp ; Fig. 278, 

 which go to the compound eyes, and from the front arise 



It i 



3 



silPi 5 lf 



ai'g.cji&J 



-C & O ~ & ir-- 



rZ W _- i-! tC 



[=o^c- 



, l-~~^ 

 '-. = u~ 



III s s|s 



5 -== 2.2 

 5- y -C: = = S7 r o 



- ~~ 



" 



rv ., >-, 3^ * w 



= ?? = 



the three slender filaments which are sent to the three ocelli 

 (Fig. 276, oc). From immediately in front, low down, arise 



