64 



STEONGYLID/K OE PAIJSADE-WOEMS. 



mer is a pinkish- or brownish-white worm, varying from 8 mm. 

 to 16 mm. in length, the male being smaller than the female, 

 and provided with a bursa excised on the ventral surface, the 



Fio. 21.— Veemiceoos Aneurism of Gkeat Mesenteeic Aetery (A natural size). 

 Railliet. (From Neumann.) 



(X, Aoi-ta ; c, cojiiac ; h, hepatic ; s, splenic; m, ti-uuk of great mesenteric ■ tn anterior 

 fasciculus with aneurism: eg, left colic; c/, first artery of tloatin.' colon- fa arteries 

 of small inte.stine ; W, light fasrioulus with aneurism ; cd, right colic ■ to renal ■ ci 

 inferior cieeal ; cs, su]ierior ca^-cal iirteries. ' y' > i 



female having a pointed tail. On each side of the bodj', a little 

 in front of the end of the oesophagus, is a long, lateral, spine-like 

 body. S. rubi-um is very similar, but is always red in colour 

 and smaller in size, and has no lateral spine. These two 



