NO, 6 



INSECT ABDOMEN — SNODCRASS 



6l 



3pl It 



VIIS 



VIS 



n 



VIT 



.J 



Fig. 24 C, D. — Outermost muscles of right half of sixth abdominal segment 

 of Heterojapyx gallardi. 



C, posterior part of right half of sixth segment and anterior part of seventh 

 sternum. D, right half of sixth segment, showing segmental sclerites. 



Ac, antecosta ; Apt, sternal apotome ; It, laterotergal lobe; Mb, intersegmental 

 membrane; Pc. precosta ; ipl. 2pl, ^tpl, 4pl, pleural sclerites; Sp, spiracle; Sty, 

 stylus; VIS, I' I IS, sixth and seventh abdominal sterna; VIT, VI IT, sixth and 

 seventh abdominal terga ; 1-40, muscles of sixth segment (see text, pages 59, 62). 



