Fig. 65. A longitudinal 

 section through the 

 body of Strongylus fila- 

 ria Rud. (From 0. 

 Augstein. ] ) A portion 

 of the body, on each 

 side of the excretory 

 pore, is seen in opti- 

 cal section. a, Mouth ; 

 b, oesophagus ; c, intes- 

 tine ; d, excretory canal ; 

 e, excretory pore, and 

 the opening of the poison 

 glands, i; /, circum- 

 oesophageal nerve-ring ; 

 g, ventral nerve ; h, dor- 

 sal nerve ; i, unicellular 

 poison glands ; k, ovary, 

 with the ova separate ; 

 I, oviduct ; m, uterus, 

 the first egg in the uterus 

 is surrounded by sper- 

 matozoa ; n, opening of 

 uterus ; o, inner end of 

 ovary with the ova un- 

 differentiated. 



1 Arch. Naiurq. 60 Jahri; 

 Bd. i. 1894, p. 255. 



