18 



FISHERY BULLETIN OF THE FISH AND WILDLIFE SERVICE 



compound eye^ 



/ ocu/omofor Branch 



/ / /o / 



/ / cao/'Z/ary aroor 



/ / 



/ / 

 / 

 / 

 / 

 / 

 / 



an/er/or 



eyes/a/A 



pore 



ven/ra/ ca/a/husS 



retractor' 

 musc/e 



cap/' //arc/ arbor 



fa '/era/ c a/a /A us 

 refrac/or 

 muscte 



Ocu/omo/or 

 nerves 



.6 



ra/n 



c erebra/ branch 



of/aterat anterior 



artery 



/e// a / 



c /rcumoejopnayea/ 

 connect/ve 



ex/erna/ hor of 

 an/ennu/or foramen 



/a/era/ anterior 



artery 



Figure !>. — Dorsal view of left eyestalk. Dorsal muscles and optic tract removed to show brain, branches of nerves, 

 arterial capillary supply to distal optic ganglia, neurosecretory glands, and location of anterior eyestalk pore. 



