PHYLUM CCELENTERATA 



173 



^ 



$. fft 



,,- 



gjr/ 771 \ 



sgph ,c 



t. 7TL 



*VL,L* 



Zf> h]zd 



dL. ntee 



B 



mee 



d.mes 



FIG. 124. Tealia crassicornis. A, dissected specimen ; B, transverse section, the half 



'above the line ab through the gullet, the lower half below the gullet ; >'. -/w. directive 

 mesenteries ; gon. gonada ; (fill. guUet ; /. m. longitudinal muscle ; Ip. lappet ; mes. 1, primary ; 

 mes. 3, secondary ; IUM. tertiary mesenteries ; mes. f. mesenteric filaments ; mth. mouth ; 

 ost. 1,'ost. 2, ostia ; p. m. parietal muscle ; sgph. siphonoglyphe ; s. jn- sphincter muscle : t. m. 

 transverse muscle. 



