ps 



ao.l. 



10. 



15. 



FIG. 75. Dorsal view of the anterior part of the body of Lumbricus, as it appears when 

 laid open along the dorsal aspect, ao, aortic arch; c, crop; c.g, cerebral ganglia; 

 c.f/l, calciferous glands; d, dissepiment; d.v, dorsal vessel; g, gizzard; a?, oesophagus; 

 ]>h, pharynx; ps, prostomium; s.f, stomach-intestine, showing the lateral pouches ; s.r, 

 seminal receptacles; t l , t 3 , t 3 , testes. 



