Fk;. 96 



A-K — At/aiiiermin deeandnta. (4 mm lon^ i)!irasitic larva.) (A-B — 

 Anterior end of esophagus containing ])rohleinatic nuclei, smnll, and 

 first group of radial nuclei, larger; ('--just anterior to nerve ring 

 including r,,.,:..; J)— at posterior level of jn-iniavy glands showing most 

 posterior glaru] orifice and one primary gland nucleus, the other gland 

 stopped anterior to this sei-tion Large cell to the right is the first 

 stiehoryte; K — mid-stichosomi' region showing esophageal tube, r type 

 nucleus, two stichocytes and branched tubule). F-Q — Tr'whuris oris. 

 (F — Section through '.i auteriormnst nuclei 8i.;i: G — section at level 

 of first marginal group: II--section at level of first radial group; 1^ 



94 



section dorsal priuuiry esophageal gland. J — stichocyte enclosing esoph- 

 agus at level of radial nucleus; K^tubule orifice and bran<-hing : L — 

 stichocvte surrounding esojdiagus in wall of which there is a small 

 nucleus ( i nerve) ; M — ^esophageal wall frcun .stichosome surrounded 

 region, slained with fuchsin to show musculJiture ; N — Esophageal 

 ■Willi from stichosome surrounded region containing red blood corpuscle 

 in lumen; O — F,nd of esophagus witli 2 accompanying cells (lower): 

 1' — Esopliatro-intestinal valve and intestine; Q — I-ongitudinal section 

 showing relationship of sticliocytes and riuli;il nuiscb^ cells to esoidiagejil 

 lumen ) . Original, 



