136 



WOEMS. 



F^//f 



septa J*^-^" -*"*"^ 

 FdlS 



Fig. 90.— The first twelve segments of PolyopJdhalmus pictus, seen from below (after 

 Mayer). The Roman numerals indicate the segments. St, Papilla; on the head ; 

 KS, head ; au, head eye ; s.au, side eyes ; 01, upper lip ; Ul, under lip ; vph 

 pharyngeal vein ; V.subinta, anterior ventral vein ; V.d.V-\ veins connecting the 

 superior lateral and vessels ; sejyV-'^, intersegmentary membranes ; m.ocs.l, lateral 

 muscle of the oesophagus ; V.ann, pulsating circular vessel; Md.dr, stomach- 

 glands ; V.v-l, vein connecting the inferior and lateral blood-vessels ; Md, stomach ; 

 Bm, muscles of the hairs ; G, brain ; jl.o, ciliated organ ; qm, transverse muscle. 



